What went wrong? flex plate, converter, or tranny? - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer What went wrong? flex plate, converter, or tranny?

Print Thread

Page 1 of 3

1

2

3

What went wrong? flex plate, converter, or tranny? #1483560 08/12/13 10:16 PM 08/12/13 10:16 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I have had a nasty vibration in my car since I got it running. I put about 200 miles on it 2 years ago, the tranny mount was shot so I put a new one in hoping the issue would go away, and it got 20 times worse. I haven't really driven it more than in and out of the garage when I want to work on a DD since. The car came from a guy who built it in 83, and parked it a few years later. I have no idea why it was parked he said his kids were born and that was that, maybe it had other issues so wasn't driven any longer? Beats me, it came with a Mallory dual point set up, but the dist. was gutted. I never heard it run before buying it 7 years ago. The motor is smooth as can be at idle, it doesn't shake at all with your hand on the valve covers. Around 1500 - 1800RPM it starts to shake on the inside and its not comfortable to even sit in, it rattles your teeth. Here's the front of the flex-plate, and it appears the left ears on the stock plate (looking at from the front of the car) are bent. What does a flex plate failure look like? I have heard they crack, would that cause this issue? Obviously the plate is damaged but could it be the tranny/converter? The motor is a 9-9-68 casting 340 with the early (thinner) dampener which I already swapped with another one I had, the converter doesn't have any weights welded onto the flat spots. I thought this was all correct maybe I'm wrong? It's a 727, and it vibrates in park, neutral, and all forward/reverse gears. Timing is set at 28 or 30 flat with no vacuum advance, electronic conversion Evan's harness and MP dist, orange box. Thanks in advance, TC... 7812060-IMG_8248.JPG (213 downloads)

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483561 08/12/13 10:26 PM 08/12/13 10:26 PM
Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas	Pull the trans because something is very wrong with that fles plate. I'm not sure if it could be installed backwards or not but it has to come apart.

Re: What went wrong? flex plate, converter, or tranny? [Re: stumpy] #1483562 08/12/13 10:33 PM 08/12/13 10:33 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	When I finally looked at it this evening I was happy to see the flex plate had visible issues. I don't know if it can be installed backwards but it would make perfect sense. All of the bolts in the plate appear to be intact and tight.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483563 08/12/13 10:43 PM 08/12/13 10:43 PM
Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas	You will want to check the converter snout fit into the crank area. When the converter is fit in the trans all the way it should be about 1" in from the edge of the case. With the trans bolted up you can push the converter flush to the flex plate. The flex plate should not bend to meet the converter pads. Also be sure to line the flex plate and converter bolt holes up and mark one ear on the flex plate and the corosponding pad on the converter they only fit one way. One hole and one pad are offset.

Re: What went wrong? flex plate, converter, or tranny? [Re: stumpy] #1483564 08/13/13 12:46 AM 08/13/13 12:46 AM
Joined: Aug 2003 Posts: 43,096 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,096 Bend,OR USA	I sold a SB 727 set up out of a 318 car to a Air Force guy going overseas back in 1971 or 1972, he had a 1971 340 Duster 4 speed car that his wife couldn't or wouldn't drive due to the clutch or shifting, anyways he put the flex plate on wrong, it broke that flexplate and I now think it vibrated also. OP, look at the flexplate, the outer converter mounting ears should be further forward to the front of the motor than the center of the flexplate is What that does is allow the converter to spin without the converter hub being centered into the crankshaft hub By rubbing it is telling you that it is not correct, time to figure out what is wrong with it Last edited by Cab_Burge; 08/13/13 01:44 PM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: What went wrong? flex plate, converter, or tranny? [Re: Cab_Burge] #1483565 08/13/13 08:53 AM 08/13/13 08:53 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Thanks for the quick replies. The plate is almost certainly on backwards, it all makes sense because the mounting holes only allow it to line up one way. I'm sure having the holes offset because the plate is on backwards causes the whole deal to be out of round and therefore vibrate. It's amazing the guy I got it from never changed it around? I'm not doing anything crazy with the car just want a jump in and go cruiser, I'm most likely going to order the B&M 10230 and some new bolts. With any luck the flex plate was the weak link and it didn't rough up the crank or back of the block. Maybe I can even get to drive this thing before the weather breaks.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483566 08/13/13 01:49 PM 08/13/13 01:49 PM
Joined: Aug 2003 Posts: 43,096 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,096 Bend,OR USA	Quote: Thanks for the quick replies. The plate is almost certainly on backwards, it all makes sense because the mounting holes only allow it to line up one way. I'm sure having the holes offset because the plate is on backwards causes the whole deal to be out of round and therefore vibrate. It's amazing the guy I got it from never changed it around? I'm not doing anything crazy with the car just want a jump in and go cruiser, I'm most likely going to order the B&M 10230 and some new bolts. With any luck the flex plate was the weak link and it didn't rough up the crank or back of the block. Maybe I can even get to drive this thing before the weather breaks. I wouldn't , and don't, use the B&M flexplates now do to some guys having issues with them vibrating(the externally balanced ones) and the converter bolt holes not lining up correctly I would either buy a new one, if you need and want a SFI spec. one for racing, or go to a tranny shop or junk yard and buy a good used one I have a dozen or more of all three sizes( 11 and 12 inch bolt patterns, small and big converter bolt sizes) and types(6 and 8 bolt crank flanges) hanging on the wall, to bad your not closer Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: What went wrong? flex plate, converter, or tranny? [Re: Cab_Burge] #1483567 08/13/13 02:07 PM 08/13/13 02:07 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I wasn't aware of the B&M having issues, I put one between the 72 or 3 340 and 904 in my Dart project that I haven't touched in 7 years. Obviously never started it but I thought that was the way to go at the time. I will look into another brand, I figured if i'm going through the trouble to yank the tranny in my garage I should put a new one in and get one that's SFI approved. I may very well have a used one laying around that I can put in as well. Thanks again for the heads up. I'm going to start taking it apart this evening, I'm hoping I don't break any bolts and create a mess especially with the headers.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483568 08/13/13 04:51 PM 08/13/13 04:51 PM
Joined: Jan 2003 Posts: 25,726 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,726 Rio Linda, CA	You can't put a flexplate on backwards for several reasons. The INTERNET, the MISinformation superhighway

Re: What went wrong? flex plate, converter, or tranny? [Re: John_Kunkel] #1483569 08/13/13 04:59 PM 08/13/13 04:59 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: You can't put a flexplate on backwards for several reasons. I agree with you John. Virtually impossible to do to put on a flexplate wrong. The bolts would not line up on either the crankshaft or the converter.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483570 08/13/13 05:03 PM 08/13/13 05:03 PM
Joined: Jan 2003 Posts: 21,063 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,063 Niles , Ohio	Man that had to make a ton of noise from the looks of it.Oh and to the people that say you cant put a flex on backwards.Guess again.Had a guy at the shop that did on the Mittsy 2.6.He didnt think anything was wrong with all the bolts not lining up.But he put it in and had the motor all bolted together.It was a lot of work but he did it.After all these years I still wonder how.Rocky Chrysler Firepower

Re: What went wrong? flex plate, converter, or tranny? [Re: therocks] #1483571 08/13/13 06:00 PM 08/13/13 06:00 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I'll have more pics as time allows to drop the tranny. If it can't go backwards I don't know what I will find. And not to say it didn't make a boat load of noise back in 83, but it makes zero noise minus a slight resonating vibration around 1800 or 2k that goes away just above that. The inspection cover is loose and I figure causing that sound. It just shakes like crazy, no rattles, bangs, grinding etc.

Re: What went wrong? flex plate, converter, or tranny? [Re: therocks] #1483572 08/13/13 06:03 PM 08/13/13 06:03 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: Man that had to make a ton of noise from the looks of it.Oh and to the people that say you cant put a flex on backwards.Guess again.Had a guy at the shop that did on the Mittsy 2.6.He didnt think anything was wrong with all the bolts not lining up.But he put it in and had the motor all bolted together.It was a lot of work but he did it.After all these years I still wonder how.Rocky You cannot do it on a big or small block. Bolt hols are offset on both the crank and the converter.

Re: What went wrong? flex plate, converter, or tranny? [Re: MoparforLife] #1483573 08/13/13 06:42 PM 08/13/13 06:42 PM
Joined: Jan 2003 Posts: 25,726 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,726 Rio Linda, CA	Not only are the bolt holes offset but the flexplate is dished toward the motor, if you could get it on backwards the converter would be shoved back into the pump and the starter likely wouldn't fit. The INTERNET, the MISinformation superhighway

Re: What went wrong? flex plate, converter, or tranny? [Re: John_Kunkel] #1483574 08/13/13 07:00 PM 08/13/13 07:00 PM
Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas	How about some pics as you tear it apart. Front of the converter when you drop the trans and a pic of the flex plate before and after you remove it.

Re: What went wrong? flex plate, converter, or tranny? [Re: John_Kunkel] #1483575 08/13/13 07:05 PM 08/13/13 07:05 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: Not only are the bolt holes offset but the flexplate is dished toward the motor, if you could get it on backwards the converter would be shoved back into the pump and the starter likely wouldn't fit. Yep - many things that say you can't do it!!!

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483576 08/13/13 07:49 PM 08/13/13 07:49 PM
Joined: Nov 2006 Posts: 1,456 oklahoma F forphorty pro stock
forphorty pro stock F Joined: Nov 2006 Posts: 1,456 oklahoma	One thing you might consider when you change the flexplate is to get some converter bolts with a thinner head. The bolt head in the pic looks pretty thick and they can get very close to the block.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483577 08/13/13 07:52 PM 08/13/13 07:52 PM
Joined: Nov 2007 Posts: 245 Western PA O OldMoparMan enthusiast
OldMoparMan enthusiast O Joined: Nov 2007 Posts: 245 Western PA	The thing that bothers me is the location of the swipe mark on the flex plate. If I'm thinking correctly the only thing that protrudes off the back of the block in that area is the camshaft plug. With what you described I would have to say the plate is deflecting as the rpm's go up from a very worn fit or broken flex plate. I've seen this happen on electric motors with plastic fan that don't rub turning by hand but hit the endbell or cover when running at full speed. It will be interesting to see the pics of the damage Living with ALS help support the search for a cure Thanks http://web.alsa.org/site/TR/Walks/WesternPennsylvania?team_id=347781&pg=team&fr_id=12069

Re: What went wrong? flex plate, converter, or tranny? [Re: OldMoparMan] #1483578 08/13/13 08:50 PM 08/13/13 08:50 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I'm going to call this bad news because the flex plate doesn't appear to be nearly as bad as the pics show. As it was already said the flexplate is installed correctly and everything looks ok. I got the header and starter off to get this far after work today. First is the inspection cover... 7813183-IMG_8257.JPG (238 downloads)

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483579 08/13/13 08:50 PM 08/13/13 08:50 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Flex plate with basically the rust rubbed off. 7813184-IMG_8264.JPG (247 downloads)

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483580 08/13/13 08:54 PM 08/13/13 08:54 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Here's the converter its fairly small in diameter compared to some I've seen may or may not be the correct one? Also the flat you can see in the pic is where the weights would be, and this motor shouldn't have any on the converter, correct? Thanks again for helping me out... 7813187-IMG_8266.JPG (108 downloads)

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483581 08/14/13 12:09 AM 08/14/13 12:09 AM
Joined: Aug 2003 Posts: 43,096 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,096 Bend,OR USA	Quote: Here's the converter its fairly small in diameter compared to some I've seen may or may not be the correct one? Also the flat you can see in the pic is where the weights would be, and this motor shouldn't have any on the converter, correct? Thanks again for helping me out... That is a after market race converter, not a stock one I think I see a washer under one of the converter mounting bolts, take it out and leave it out It looks like your working on a SB motor, yes? Next thing is to figure out if the motor was a externally balanced cast iron crankshaft motor originally or not What crankshaft dampener is on it now? Post a picture of the front of the motor with the pulleys and dampener so we can see them from the front Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: What went wrong? flex plate, converter, or tranny? [Re: Cab_Burge] #1483582 08/14/13 12:24 AM 08/14/13 12:24 AM
Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,909 Grand Prairie,Texas	I looks like a crankshaft bolt head or something is against the converter in the second photo and that shouldn't be. And you still need to figure out why the flex plate ears are bent.

Re: What went wrong? flex plate, converter, or tranny? [Re: stumpy] #1483583 08/14/13 02:04 AM 08/14/13 02:04 AM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	You wouldn't be the first one to experience flexplate to insp cover carnage. Everything else looks pretty much normal.

Re: What went wrong? flex plate, converter, or tranny? [Re: buildanother] #1483584 08/14/13 05:34 AM 08/14/13 05:34 AM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Bolt head looks pretty thick, funny it didn't hit on the block webbing. Also on the dusct cover. There are a couple of variations with the converter mounting screw groove in a different location depending on the converter used.

Re: What went wrong? flex plate, converter, or tranny? [Re: Cab_Burge] #1483585 08/14/13 06:54 AM 08/14/13 06:54 AM
Joined: Jan 2003 Posts: 926 MICHIGAN B BB65Barracuda super stock
BB65Barracuda super stock B Joined: Jan 2003 Posts: 926 MICHIGAN	I think I see a washer under one of the converter mounting bolts, take it out and leave it out! Cabs right, looks like wrong bolts and the washers aren't helping. That's obviously what is tearing up the inspection plate. 1957 Power wagon wm300 original 10.000 mile truck, 1964 dodge Polara Convertible numbers matching

Re: What went wrong? flex plate, converter, or tranny? [Re: Cab_Burge] #1483586 08/14/13 08:24 AM 08/14/13 08:24 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Quote: It looks like your working on a SB motor, yes? Next thing is to figure out if the motor was a externally balanced cast iron crankshaft motor originally or not What crankshaft dampener is on it now? Post a picture of the front of the motor with the pulleys and dampener so we can see them from the front Cab this is from earlier in my post I can get a pic this evening if needed but: The motor is a 9-9-68 casting 340 with the early (thinner) dampener which I already swapped with another one I had of a 70 motor, the converter doesn't have any weights welded onto the flat spots on the motor side. I thought this was all correct maybe I'm wrong? It's a 727, and it vibrates in park, neutral, and all forward/reverse gears. Timing is set at 28 or 30 flat with no vacuum advance, electronic conversion Evan's harness and MP dist, orange box. Thanks again for all of the great feedback, I'm happy to hear the washers and what not don't look ok. I'm well on my way to getting the tranny out, and it should be out by the weekend. It's not the ideal setup by any means the car is on jack stands and I'm laying on the garage floor. Makes sense it's not the stock converter the car doesn't engage like a newer daily driver when you put it in drive, and the neighbors love when I pull it in the garage at 10pm.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483587 08/14/13 09:09 AM 08/14/13 09:09 AM
Joined: Jan 2007 Posts: 685 pennsylvania poboyengineering mopar
poboyengineering mopar Joined: Jan 2007 Posts: 685 pennsylvania	Quote: Flex plate with basically the rust rubbed off. doesn't it look like the bolts holding the flexplate to the crank are hitting the converter? that would keep the converter too far away from the crank, and then the installer just pulled the ears down with the bolts, distorting the flexplate? just my It may be ugly, but it sure is slow. Girls comb their hair in rear view mirrors and the boys try to look so hard....

Re: What went wrong? flex plate, converter, or tranny? [Re: poboyengineering] #1483588 08/14/13 09:40 AM 08/14/13 09:40 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Quote: the installer just pulled the ears down with the bolts, distorting the flexplate? just my I have my fingers crossed that's exactly what went wrong. With any luck a new plate, and 10 bolts and I'm good to go.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483589 08/14/13 09:51 AM 08/14/13 09:51 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: Quote: the installer just pulled the ears down with the bolts, distorting the flexplate? just my I have my fingers crossed that's exactly what went wrong. With any luck a new plate, and 10 bolts and I'm good to go. How would a distorted flex plate cause a vibration?

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483590 08/14/13 10:00 AM 08/14/13 10:00 AM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	I once had trouble with a 318 we but in a truck ended up the front pass motor mount was installed on the ears wrong. causing motor and tranny to be missaligned a bit always had to force it a bit to get trany in cross over right. One i fixed it vibration was gone?? On a 340 is there not some shiming to do with certain mounts to make sure it is in right!

Re: What went wrong? flex plate, converter, or tranny? [Re: Challenger 1] #1483591 08/14/13 10:24 AM 08/14/13 10:24 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Quote: How would a distorted fex plate cause a vibration? If I'm understanding this correctly: If the crank bolts are hitting the converter and they tightened the first flex plate bolt all the way initially, you would have to draw the plate to the converter with other 3 bolts (after the first one is tight the plate would be putting force on the heads of the other 3 bolts, or pulling away from the converter) which would bend the ears and create a spring like tension VS the plate laying flat against the converter as it should be and the bolts simply holding the 2 together.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483592 08/14/13 01:08 PM 08/14/13 01:08 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	There's an assumption that the OP is making that doesn't sound right to me. On stock converters that have weights, like for a 340 cast crank or 360, the weights are welded to the OD of the converter shell. But the OP has mentioned twice now that the weights would be welded to the flat area above the mounting bolt. Is this common? I am not that familiar with aftermarket converters and want to know. R.

Re: What went wrong? flex plate, converter, or tranny? [Re: dogdays] #1483593 08/14/13 01:37 PM 08/14/13 01:37 PM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Remember,there are two different size bolt holes in the flex plate depending on the application,if you have a converter that uses small bolts and a plate with big holes,it will never be centered!!

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483594 08/14/13 08:58 PM 08/14/13 08:58 PM
Joined: Nov 2007 Posts: 245 Western PA O OldMoparMan enthusiast
OldMoparMan enthusiast O Joined: Nov 2007 Posts: 245 Western PA	There is something to what challenger1 said about the vibration even if the flex plate is bent from bolt pressure if it's centered it shouldn't cause vibration. Because you stated that the engine runs smooth at idle that would tend to eliminate any part of the rotating assembly parts being off center or heavy to one side. If the vibration increases with the engine rpm's then something has to be deflecting and possible rubbing I run a high speed balancing machine for electric motors and it doesn't matter if it's turning 400 or 2000 rpm's the out of balance amount doesn't change the only way to change it is to add or remove weight Living with ALS help support the search for a cure Thanks http://web.alsa.org/site/TR/Walks/WesternPennsylvania?team_id=347781&pg=team&fr_id=12069

Re: What went wrong? flex plate, converter, or tranny? [Re: OldMoparMan] #1483595 08/15/13 12:11 AM 08/15/13 12:11 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I didn't get much from ripping the trans out aside from the back of my head being soaked with transmission fluid and anti-freeze. The flex plate bolts were not very tight, none of the holes were rounded out or threads smoothed. Otherwise I don't see any damage. I also didn't take the converter out but I can't feel any weights on the back side of it either. I'm going to order a new flex plate and bolts while it's apart, as well as motor mounts simply because they say made in Korea. I was hoping there would be a sign of something but I guess you don't know until you look. If it still shakes when it goes back together I guess I'll have to drop the pan to check the crank, and or put a new converter in it. On a lighter note I can drop a 727 myself in a lot less time than I thought it'd take. 7814735-IMG_8275.JPG (80 downloads)

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483596 08/15/13 12:12 AM 08/15/13 12:12 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	converter 7814736-IMG_8277.JPG (99 downloads)

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483597 08/15/13 12:42 AM 08/15/13 12:42 AM
Joined: Aug 2003 Posts: 43,096 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,096 Bend,OR USA	You might want to send that converter out to a good shop like ATI or Turbo Action and have them run it on thier converter dyno to see if it is out of balance or hurt internally Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: What went wrong? flex plate, converter, or tranny? [Re: Cab_Burge] #1483598 08/15/13 07:15 AM 08/15/13 07:15 AM
Joined: Jan 2003 Posts: 926 MICHIGAN B BB65Barracuda super stock
BB65Barracuda super stock B Joined: Jan 2003 Posts: 926 MICHIGAN	Quote: You might want to send that converter out to a good shop like ATI or Turbo Action and have them run it on thier converter dyno to see if it is out of balance or hurt internally Much cheaper than a new unit and you will be certain to have a good piece when you get it back. 1957 Power wagon wm300 original 10.000 mile truck, 1964 dodge Polara Convertible numbers matching

Re: What went wrong? flex plate, converter, or tranny? [Re: BB65Barracuda] #1483599 08/15/13 09:07 AM 08/15/13 09:07 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Any idea on the cost and a ball park turn around? I need to have it back together before the weather goes south.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483600 08/15/13 10:53 AM 08/15/13 10:53 AM
Joined: Aug 2011 Posts: 1,083 SE PA Yellow Fever super stock
Yellow Fever super stock Joined: Aug 2011 Posts: 1,083 SE PA	Where in PA are you? Go to Pat's Convertors, they will check it out. Pat's Converters Inc 101 Swarthmore Ave Folsom, PA 19033 (610) 237-6900

Re: What went wrong? flex plate, converter, or tranny? [Re: Yellow Fever] #1483601 08/15/13 11:14 AM 08/15/13 11:14 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I'm a stone's throw from State College, just about 8 miles east.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483602 08/15/13 11:27 AM 08/15/13 11:27 AM
Joined: Aug 2011 Posts: 1,083 SE PA Yellow Fever super stock
Yellow Fever super stock Joined: Aug 2011 Posts: 1,083 SE PA	That's a drive then, they are by me in SE PA, just south of Philthy!

Re: What went wrong? flex plate, converter, or tranny? [Re: Yellow Fever] #1483603 08/15/13 11:40 AM 08/15/13 11:40 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I'll figure something out, I was beat last night but I'm not giving up on the project yet and my DS motor mount is really spongy I can pry up on it between the k-frame and the ear that's bolted through it making everything move and twist. I'm curious to see if possibly the bottom of that bracket is rattling off the k-frame shaking the whole car when it's under a load. I'm stumped and will just take care of those few things and see if it magically goes away.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483604 08/15/13 12:00 PM 08/15/13 12:00 PM
Joined: Jan 2003 Posts: 949 Indiana 6 68_661charger super stock
68_661charger super stock 6 Joined: Jan 2003 Posts: 949 Indiana	The lack of a good drivers side mount will make noise when driving under a load but not necessarily when in park. I agree the convert bolts are too big and the stall on that convertor probably makes it a bear to drive??. Worst case is the crank is walking forward as the RPMs increase causing contact.

Re: What went wrong? flex plate, converter, or tranny? [Re: 68_661charger] #1483605 08/15/13 12:08 PM 08/15/13 12:08 PM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	I didn't do a ton of driving before putting the trans mount in last year but it was friendly on the street, made lots of noise, left hard from lights, shifted into 3rd around 60 - 65. There's a steep road near my house we crossed over before the trans mount and it shook the worst it ever did while climbing the mtn. Beats me, new parts will be ordered what I get paid next week and with any luck it will settle a bit.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483606 08/15/13 12:13 PM 08/15/13 12:13 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Take a screwdriver and check the crank end play, do it between the flex plate/crank flange and block and then damper and timing cover. Last edited by Challenger 1; 08/15/13 05:37 PM.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483607 08/15/13 04:40 PM 08/15/13 04:40 PM
Joined: Nov 2007 Posts: 245 Western PA O OldMoparMan enthusiast
OldMoparMan enthusiast O Joined: Nov 2007 Posts: 245 Western PA	You might want to run the engine now and see if there is any vibration there. The more things eliminated the less you have to think about. Living with ALS help support the search for a cure Thanks http://web.alsa.org/site/TR/Walks/WesternPennsylvania?team_id=347781&pg=team&fr_id=12069

Re: What went wrong? flex plate, converter, or tranny? [Re: OldMoparMan] #1483608 08/15/13 04:45 PM 08/15/13 04:45 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: You might want to run the engine now and see if there is any vibration there. The more things eliminated the less you have to think about. Not gonna be able to use a starter now. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: What went wrong? flex plate, converter, or tranny? [Re: Supercuda] #1483609 08/16/13 12:56 AM 08/16/13 12:56 AM
Joined: Aug 2003 Posts: 43,096 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,096 Bend,OR USA	Quote: Quote: You might want to run the engine now and see if there is any vibration there. The more things eliminated the less you have to think about. Not gonna be able to use a starter now. Unless you have nuetral balanced stick flywheel and bellhousing to match the size of the flywheel I do OP, I hope you find the problem Let us know what you do find Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: What went wrong? flex plate, converter, or tranny? [Re: Cab_Burge] #1483610 08/16/13 09:11 AM 08/16/13 09:11 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Will do I talked to John at ATI racing yesterday. I'm going to send out the converter which btw doesn't have any weights on the outside of it. I'm planning to order a new flex plate/bolts, shumacher motor mounts and with any luck it will be good to go.

Re: What went wrong? flex plate, converter, or tranny? [Re: MoparforLife] #1483611 08/16/13 09:35 AM 08/16/13 09:35 AM
Joined: Jan 2003 Posts: 1,787 Big Sky Country M MO_PA top fuel
MO_PA top fuel M Joined: Jan 2003 Posts: 1,787 Big Sky Country	Are the alignment dowels in the block? I don't see them in the pics.

Re: What went wrong? flex plate, converter, or tranny? [Re: 71nonRT340shaker] #1483612 08/16/13 09:35 AM 08/16/13 09:35 AM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Quote: Will do I talked to John at ATI racing yesterday. I'm going to send out the converter which btw doesn't have any weights on the outside of it. I'm planning to order a new flex plate/bolts, shumacher motor mounts and with any luck it will be good to go. If you put that thing back in Bill's basement you won't have to worry about it !!

Re: What went wrong? flex plate, converter, or tranny? [Re: 62maxwgn] #1483613 08/16/13 09:49 AM 08/16/13 09:49 AM
Joined: Jul 2013 Posts: 116 Pa 71nonRT340shaker OP member
71nonRT340shaker OP member Joined: Jul 2013 Posts: 116 Pa	Quote: If you put that thing back in Bill's basement you won't have to worry about it !! Haha this is my 70 'cuda that came out of the Snow Shoe area, the challenger is a 4 speed car...

Page 1 of 3

1

2

3

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1