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Before I pull the transmission out again Question ? #2394676
10/29/17 11:08 AM
10/29/17 11:08 AM
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Seaford, Va
Kindafast Offline OP
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Kindafast  Offline OP
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Hey guys I have a built race transmission in my car but it started leaking pretty bad from the front pump seal so I pulled it out and sent it to my friend for a check out and quick once over. He adjusted the clearances and fixed a leak on the valve body. Found the front pump bushing had slid forward and cut the pump gasket. Okay got the transmission back and it worked really good. Just noticed it kind of seemed to hesitate shifting into 2nd gear but it hit hard when it did. Drive the car around the neighborhood and it worked good. Went to the track yesterday backed it off the trailer and went to tech. Worked fine. Got ready to make a pass and nothing !!! Every gear is like a netural unless you rev it up and it bumps into gear but drops right out when you let off the loud pedal. I had no problem before this and yes it has plenty of fluid and the adjustment in the shifter is working. Any ideas before I pull this heavy thing back out ?? Thanks !!!


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Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2394677
10/29/17 11:15 AM
10/29/17 11:15 AM
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Central TEXAS!!!!
sr4440 Offline
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I have a question, what kind of transmission is this?

Regardless, i would get a pressure reading from the front pressure port.


Joe


Without Data, you’re just another guy with an opinion.
Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2394686
10/29/17 11:33 AM
10/29/17 11:33 AM
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aZLiViN
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something I'd look at quick is checking the fluid level in P and N.... if the level doesn't change, I'd be thinking the pump. you could pull a cooler line and have someone start it up in N and observe fluid flow. The "leak in the valve body" is kind of concerning though...

Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2394688
10/29/17 11:41 AM
10/29/17 11:41 AM
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Seaford, Va
Kindafast Offline OP
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Kindafast  Offline OP
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Thanks for the reply. The leak was the screws on the vb came loose and the pressure plunger was sticking out a little. The transmission itself is a 727 rollerized with aluminum front clutch hub with a ton of a/m race parts ..


6.50 @105.26
Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2394695
10/29/17 11:58 AM
10/29/17 11:58 AM
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st.louis,mo.
dart games Offline
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not trying to hi-jackthis thread ,but i have a 727,you go like ten feet in 1st,then it acts like the trans brakes on,doesnt do it in 2nd,take it out of first,go back into first,still does it

Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400675
11/08/17 08:40 PM
11/08/17 08:40 PM
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Seaford, Va
Kindafast Offline OP
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Hey Guys I still need some advice. I pulled the transmission out and had the transmission man install a new A and A reverse manual valve body and check the transmission out again. The transmission looked fine inside and I reinstalled it. Still nothing unless I rev it up a little in forward gears and I really have to rev it in reverse while sitting on the jack stands. I called PTC and asked about the converter and they stated that a converter won't come and go ?? I am at a loss here and so darn tired of pulling this transmission out. Any ideas ?? Thanks


6.50 @105.26
Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400676
11/08/17 08:41 PM
11/08/17 08:41 PM
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Seaford, Va
Kindafast Offline OP
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Also I unhooked the cooler lines and it was pumping a steady stream out in netural so I guess the pump is working .


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Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400703
11/08/17 09:38 PM
11/08/17 09:38 PM
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Connecticut
FurryStump Offline
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I'm not sure you can, I don't think anything in the trans changes other than the valve body when going to rev/man, but can you put the old valve body back in and see what it does? If it works then you know it's the new valve body. You can also air check the servos with the valve body off.


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Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400704
11/08/17 09:39 PM
11/08/17 09:39 PM
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Connecticut
FurryStump Offline
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Also flow of fluid might not equate to adequate pressure. Sorry didn't see the first string of posts.

Last edited by FurryStump; 11/08/17 09:43 PM.

best of 11.39 at 117 mph 1.60 60’. 68 340 S Barracuda Fastback F.A.S.T [IMG]http://i67.tinypic.com/2mnnnnt.jpg[/IMG]
Re: Before I pull the transmission out again Question ? [Re: FurryStump] #2400744
11/08/17 11:05 PM
11/08/17 11:05 PM
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PA.
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I can't help with your issue but this guy can. Hutch gives out LOTS of free info everyday if you post up your questions.


http://www.yellowbullet.com/forum/forumdisplay.php?f=30


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422 Indy headed small block
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Re: Before I pull the transmission out again Question ? [Re: pittsburghracer] #2400764
11/08/17 11:33 PM
11/08/17 11:33 PM
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Seaford, Va
Kindafast Offline OP
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Thanks I will try and contact him.


6.50 @105.26
Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400865
11/09/17 03:53 AM
11/09/17 03:53 AM
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Bend,OR USA
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Cab_Burge Offline
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I hate to say this but your converter may be the problem, was there any noticeable debris or foreign broken parts in the pan this time?
If so maybe it is time to have the torque converter looked at work
The last simple thing I can think of that could cause this problem is the shift linkage, I set mine by starting in neutral and adjust the cable end so it drops into the hole in the shift arm easily, no resistance, once I have it adjusted for neutral I then check it in all the other forwards gears, some shifter cables will not allow you enough slack in the cable in reverse to have the end slide in and out of the arm easily shruggy scope
Let us know what you find out please thumbs


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Before I pull the transmission out again Question ? [Re: Cab_Burge] #2400873
11/09/17 04:35 AM
11/09/17 04:35 AM
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Affton MO
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Does the car try to go forward in neutral? Nevermind I just read your first post. Problem is probably in the pump.

Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400883
11/09/17 09:04 AM
11/09/17 09:04 AM
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Seaford, Va
Kindafast Offline OP
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Thanks guys , The pump was looked at twice and it checked out fine. Cab there was really very little in the pan and the filter was clean. No signs of something coming apart.


6.50 @105.26
Re: Before I pull the transmission out again Question ? [Re: sr4440] #2400890
11/09/17 10:13 AM
11/09/17 10:13 AM
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MI, usa
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Originally Posted By sr4440
I have a question, what kind of transmission is this?

Regardless, i would get a pressure reading from the front pressure port.


Joe

Good simple info right here. Do it and save time.
Doug

Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400966
11/09/17 01:31 PM
11/09/17 01:31 PM
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Seaford, Va
Kindafast Offline OP
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Okay how do I go about getting that reading ? Would it be the line coming off off the cooler ?


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Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400980
11/09/17 02:12 PM
11/09/17 02:12 PM
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You can get pressure reading off of the servos on the passenger side of the tranny, remove the small pipe plug on top and get the proper pressure gauge, I don't remember which servo has the low pressure and which one has the higher pressure confused and take the readings from there scope

Last edited by Cab_Burge; 11/09/17 02:20 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400988
11/09/17 02:20 PM
11/09/17 02:20 PM
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Seaford, Va
Kindafast Offline OP
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Thanks Cab , What type of pressure gauge do I need ?


6.50 @105.26
Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400989
11/09/17 02:23 PM
11/09/17 02:23 PM
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Bend,OR USA
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Call your tranny guy or use that link to find what the readings should be scope
I think the front servo in neutral or in gear, CRS realcrazy should be above 140 lbs and I think the other readings are lower than 100 lbs, but I'm not sure shruggy
Maybe the different valve body have different readings confused


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Before I pull the transmission out again Question ? [Re: Kindafast] #2400993
11/09/17 02:35 PM
11/09/17 02:35 PM
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Michigan
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Middle plug on the passenger side is line pressure. Should have pressure in all forward gears. Front plug is front servo and should only have pressure in third gear on both manual and auto valve bodies. Rear plug is for manual low and reverse. Standard line pressures are around 55 at idle and go up to approx. 85-90 lbs. with the kick down lever all the way back. Manual shift valve bodies usually have around 90 and up at idle for line. That should get you started on your tests.

Last edited by Transman; 11/09/17 02:37 PM.
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