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#2394676 - 10/29/17 09:08 AM Before I pull the transmission out again Question ?
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: 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 !!!
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#2394677 - 10/29/17 09:15 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
sr4440 Offline
mopar

Registered: 02/06/08
Posts: 412
Loc: 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
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#2394686 - 10/29/17 09:33 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
J_BODY Offline
I Live Here

Registered: 04/30/03
Posts: 11119
Loc: aZLiViN
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...

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#2394688 - 10/29/17 09:41 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: 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 ..
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#2394695 - 10/29/17 09:58 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
70b1dart Offline
enthusiast

Registered: 01/31/11
Posts: 253
Loc: st.louis,mo.
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

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#2400675 - 11/08/17 05:40 PM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: 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
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#2400676 - 11/08/17 05:41 PM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: 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 .
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#2400703 - 11/08/17 06:38 PM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
FurryStump Offline
top fuel

Registered: 10/15/04
Posts: 2441
Loc: Connecticut
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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#2400704 - 11/08/17 06:39 PM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
FurryStump Offline
top fuel

Registered: 10/15/04
Posts: 2441
Loc: Connecticut
Also flow of fluid might not equate to adequate pressure. Sorry didn't see the first string of posts.


Edited by FurryStump (11/08/17 06:43 PM)
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#2400744 - 11/08/17 08:05 PM Re: Before I pull the transmission out again Question ? [Re: FurryStump]
pittsburghracer Offline
Slowride

Registered: 02/02/05
Posts: 11879
Loc: 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
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6.143@110.89 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
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#2400764 - 11/08/17 08:33 PM Re: Before I pull the transmission out again Question ? [Re: pittsburghracer]
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: Seaford, Va
Thanks I will try and contact him.
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#2400865 - 11/09/17 12:53 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 29544
Loc: 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 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
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#2400873 - 11/09/17 01:35 AM Re: Before I pull the transmission out again Question ? [Re: Cab_Burge]
qwkmopardan Offline
super stock

Registered: 03/26/08
Posts: 788
Loc: Affton MO
Does the car try to go forward in neutral? Nevermind I just read your first post. Problem is probably in the pump.

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#2400883 - 11/09/17 06:04 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: 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.
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#2400890 - 11/09/17 07:13 AM Re: Before I pull the transmission out again Question ? [Re: sr4440]
dvw Offline
master

Registered: 03/16/06
Posts: 6543
Loc: MI, usa
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

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#2400966 - 11/09/17 10:31 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: Seaford, Va
Okay how do I go about getting that reading ? Would it be the line coming off off the cooler ?
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Street legal pump gas. Thanks to Magnum Machine and R/T Racing

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#2400980 - 11/09/17 11:12 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 29544
Loc: 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 confused and take the readings from there scope


Edited by Cab_Burge (11/09/17 11:20 AM)
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#2400988 - 11/09/17 11:20 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Kindafast Offline
top fuel

Registered: 10/11/05
Posts: 1610
Loc: Seaford, Va
Thanks Cab , What type of pressure gauge do I need ?
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New best 8-19-2013 6.49 @ 103 in the 1/8
Street legal pump gas. Thanks to Magnum Machine and R/T Racing

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#2400989 - 11/09/17 11:23 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 29544
Loc: Bend,OR USA
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
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#2400993 - 11/09/17 11:35 AM Re: Before I pull the transmission out again Question ? [Re: Kindafast]
Transman Offline
mopar

Registered: 03/27/11
Posts: 428
Loc: 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.


Edited by Transman (11/09/17 11:37 AM)

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