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Re: What Happened??
[Re: moparphilll]
#2213605
12/13/16 11:21 PM
12/13/16 11:21 PM
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Joined: Jul 2007
Posts: 11,836
Florida
mopar346
Let me tell ya about fat chicks!
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Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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Could be that is was cracked for a while and someone kept driving and due to time and vibration it busted out the rest of the way in one swift bang. I agree with sending the trans for a check, at a minimum pull the pan and look for metal parts, 727s aren't bad about showing material but you should get an idea by the smell of the fluid and any metal in the pan. 
Careful, your character's showing!
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Re: What Happened??
[Re: mopar346]
#2213892
12/14/16 02:57 PM
12/14/16 02:57 PM
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Joined: Jan 2003
Posts: 75,016
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,016
U.S.S.A.
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Could be that is was cracked for a while and someone kept driving and due to time and vibration it busted out the rest of the way in one swift bang.
This , I have no idea how a neutral drop is responsible for that ??? There is no HARD mechanical connection between the back of the crank and the mainshaft of the transmission , total FLUID coupling inside the torque converter . Neutral drops will only affect the trans internals , drive shaft and the rear end. The many hours of running with that misalignment because one dowel pin was missing is what crack and ultimately broke that flexplate. I'd be looking at the convertor snout and the bushing in the front drum for wear, along with changing the front seal. Post up a picture of the converter snout ...
running up my post count some more .
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Re: What Happened??
[Re: moparphilll]
#2213920
12/14/16 03:53 PM
12/14/16 03:53 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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That's a fairly common failure on the early Cummins trucks. I've seen a cracked plate on a gas engine too.
I wouldn't be overly concerned. Someone just let it a cracked one go to long and it finally failed.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: What Happened??
[Re: JohnRR]
#2214301
12/15/16 10:28 AM
12/15/16 10:28 AM
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Joined: Feb 2003
Posts: 12,675
Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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Could be that is was cracked for a while and someone kept driving and due to time and vibration it busted out the rest of the way in one swift bang.
This , I have no idea how a neutral drop is responsible for that ??? There is no HARD mechanical connection between the back of the crank and the mainshaft of the transmission , total FLUID coupling inside the torque converter . Neutral drops will only affect the trans internals , drive shaft and the rear end. The many hours of running with that misalignment because one dowel pin was missing is what crack and ultimately broke that flexplate. I'd be looking at the convertor snout and the bushing in the front drum for wear, along with changing the front seal. Post up a picture of the converter snout ... x2. You should have two dowel pins - and you'll need the 2nd one when you put that back together... Unless you want another broken plate.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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Re: What Happened??
[Re: moparphilll]
#2214417
12/15/16 01:56 PM
12/15/16 01:56 PM
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Joined: Jan 2003
Posts: 75,016
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,016
U.S.S.A.
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Found out the car had been Towed on car Dolly from Washington state to North Dakota...The drive shaft was NOT removed  That didn't cause the flexplate to break , but with that knowledge I would be going thru the trans. Pay close attention to the mainshaft surface that rides in the rear support and the rear support itself.
running up my post count some more .
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Re: What Happened??
[Re: moparphilll]
#2214420
12/15/16 01:57 PM
12/15/16 01:57 PM
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Joined: Jun 2005
Posts: 5,102
Western Md.
skicker
"The Champ"
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"The Champ"
Joined: Jun 2005
Posts: 5,102
Western Md.
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The pump is not in the rear of the trans. Shouldn't have mattered should it?  I'd agree its a good practice to remove it especially when going that far...but it could've never done that damage... I believe the missing dowel is the reason for the damage...
...FAFO...
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Re: What Happened??
[Re: skicker]
#2214435
12/15/16 02:13 PM
12/15/16 02:13 PM
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Joined: Nov 2003
Posts: 10,228
Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
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The pump is not in the rear of the trans. Shouldn't have mattered should it? I'd agree its a good practice to remove it especially when going that far...but it could've never done that damage... I believe the missing dowel is the reason for the damage... Typically flat towing w/ the driveshaft left in is limited to something like 35 miles at fairly low speeds. I wouldn't chance it, I'd go through the transmission before attempting to install it. 2¢ Robert
'68 Fury Convertible
'69 300 Convertible
'15 Durango 5.7 Hemi
'16 300 S Hemi
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Re: What Happened??
[Re: moparphilll]
#2214457
12/15/16 02:59 PM
12/15/16 02:59 PM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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You need both dowel pins. That top hole looks a bit oblong, like the trans case was moving? With the transmission apart, you could even check the run out to the trans pump housing in the case and correct it if needed. For offset dowel pins: http://www.robbmcperformance.com/products/dowels.htmlI would go through the trans and rebuild it. If your mechanically inclined, you could do it for $100-200 depending on the quality of parts used.
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Re: What Happened??
[Re: 451Mopar]
#2214512
12/15/16 04:27 PM
12/15/16 04:27 PM
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Joined: Aug 2003
Posts: 2,578
Fargo ND
moparphilll
OP
master
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OP
master
Joined: Aug 2003
Posts: 2,578
Fargo ND
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You need both dowel pins. That top hole looks a bit oblong, like the trans case was moving? With the transmission apart, you could even check the run out to the trans pump housing in the case and correct it if needed. For offset dowel pins: http://www.robbmcperformance.com/products/dowels.htmlI would go through the trans and rebuild it. If your mechanically inclined, you could do it for $100-200 depending on the quality of parts used. GREAT Thanks for info and Link!!
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Re: What Happened??
[Re: mopargem]
#2214911
12/16/16 02:44 AM
12/16/16 02:44 AM
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Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
Magnum
master
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master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
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Are the locator dowl pins in the bell housing. Misalignment can cause a flex plate to fail Correct diagnoisis🔝. It happens quite often from storing the block on the floor with the dowels pointing to the ground. Since the are tapers they need to be pulled out so more than the taper is engaged to the transmission holes, which also have a lead in.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: What Happened??
[Re: moparphilll]
#2216476
12/18/16 08:16 PM
12/18/16 08:16 PM
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Joined: Jan 2005
Posts: 3,699
Newport, Mi
Evil Spirit
master
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master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
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Hard to really see the condition of the converter snout in the picture, but in my experience missing pins or a mis-aligned bellhousing will usually junk the front pump bushing and converter snout far before it would break the flex plate.
So with that said, I would at least change the front pump bushing and seal if you don't go through the whole trans.
Last edited by Evil Spirit; 12/18/16 08:18 PM.
Free advice and worth every penny...
Factory trained Slinky rewinder.........
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I am going to replace torque converter and get dool installed have not took pan off the tranny yet to see what it lloks like..