Before I pull the transmission out again Question ?
#2394676
10/29/17 11:08 AM
10/29/17 11:08 AM
|
Joined: Oct 2005
Posts: 1,927 Seaford, Va
Kindafast
OP
top fuel
|
OP
top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
|
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 !!!
6.50 @105.26
|
|
|
Re: Before I pull the transmission out again Question ?
[Re: Kindafast]
#2394677
10/29/17 11:15 AM
10/29/17 11:15 AM
|
Joined: Feb 2008
Posts: 714 Central TEXAS!!!!
sr4440
super stock
|
super stock
Joined: Feb 2008
Posts: 714
Central TEXAS!!!!
|
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]
#2394688
10/29/17 11:41 AM
10/29/17 11:41 AM
|
Joined: Oct 2005
Posts: 1,927 Seaford, Va
Kindafast
OP
top fuel
|
OP
top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
|
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]
#2400675
11/08/17 08:40 PM
11/08/17 08:40 PM
|
Joined: Oct 2005
Posts: 1,927 Seaford, Va
Kindafast
OP
top fuel
|
OP
top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
|
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
|
Joined: Oct 2005
Posts: 1,927 Seaford, Va
Kindafast
OP
top fuel
|
OP
top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
|
Also I unhooked the cooler lines and it was pumping a steady stream out in netural so I guess the pump is working .
6.50 @105.26
|
|
|
Re: Before I pull the transmission out again Question ?
[Re: Kindafast]
#2400704
11/08/17 09:39 PM
11/08/17 09:39 PM
|
Joined: Oct 2004
Posts: 2,820 Connecticut
FurryStump
master
|
master
Joined: Oct 2004
Posts: 2,820
Connecticut
|
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.
|
|
|
Re: Before I pull the transmission out again Question ?
[Re: FurryStump]
#2400744
11/08/17 11:05 PM
11/08/17 11:05 PM
|
Joined: Feb 2005
Posts: 20,179 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,179
PA.
|
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
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: Before I pull the transmission out again Question ?
[Re: Kindafast]
#2400865
11/09/17 03:53 AM
11/09/17 03:53 AM
|
Joined: Aug 2003
Posts: 43,204 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,204
Bend,OR USA
|
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 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 Let us know what you find out please
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Before I pull the transmission out again Question ?
[Re: Kindafast]
#2400883
11/09/17 09:04 AM
11/09/17 09:04 AM
|
Joined: Oct 2005
Posts: 1,927 Seaford, Va
Kindafast
OP
top fuel
|
OP
top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
|
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
|
Joined: Mar 2006
Posts: 9,843 MI, usa
dvw
master
|
master
Joined: Mar 2006
Posts: 9,843
MI, usa
|
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
|
Joined: Oct 2005
Posts: 1,927 Seaford, Va
Kindafast
OP
top fuel
|
OP
top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
|
Okay how do I go about getting that reading ? Would it be the line coming off off the cooler ?
6.50 @105.26
|
|
|
Re: Before I pull the transmission out again Question ?
[Re: Kindafast]
#2400980
11/09/17 02:12 PM
11/09/17 02:12 PM
|
Joined: Aug 2003
Posts: 43,204 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,204
Bend,OR USA
|
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 and take the readings from there
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
|
Joined: Oct 2005
Posts: 1,927 Seaford, Va
Kindafast
OP
top fuel
|
OP
top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
|
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
|
Joined: Aug 2003
Posts: 43,204 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,204
Bend,OR USA
|
Call your tranny guy or use that link to find what the readings should be I think the front servo in neutral or in gear, CRS should be above 140 lbs and I think the other readings are lower than 100 lbs, but I'm not sure Maybe the different valve body have different readings
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
|
Joined: Mar 2011
Posts: 3,079 Michigan
A727Tflite
master
|
master
Joined: Mar 2011
Posts: 3,079
Michigan
|
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.
|
|
|
|
|