T-MAN
misunderstood
- Joined
- Sep 28, 2008
- Messages
- 352
Thank you for the replies and thank you Jeff for posting this for me. The truck/trans in question belongs to me. ill go through the trans history from the beginning best I can.
I hit the track last year and ran a best of 10.1 @132.91. Trans has what I consider best of everything as far as drums, shafts and clutches.
I made about 15 passes last year with small changes to fuel, timing and shift points trying to get it dialed in. my transmission issues last year were hard part failures , stripped internal clutch teeth on the direct clutches and it killed the hub but no burnt clutches, after I replaced the hub and direct clutches I stripped the splines out of the new hub with my input shaft ( truck shifted to second the same time my converter locked) last problem was my front shaft carden joint decided to let go after my launch so I didn't complete my run. each time trans was apart the problem was obvious and no plugged filter. that ended my year.
This year I hit the track with no changes over the winter and first time out I didn't have lockup. pulled trans and found plugged filter and clutch debris. forward clutches were perfect, band perfect, direct were perfect and overdrive were perfect.(I re used everything) I sent the converter out and I was sent a different one to get me racing by the following Friday (kick ass customer service) I made the event got 3 passes and lost line pressure ran around the 10.2 mark. I figured I smoked another converter so I pulled the unit again contacted phill and said I ruined more of your work can you get me out a replacement.... clutches were fine again no slipping or wear.
This time I figured a cross leak in the valvebody or stuck valve or something beyond my pay grade. took a virgin 47re valvebody I had and sent it off to be built so I could rule it out. this time I put it together fresh converter, new clutches and steels and valvebody. had 170 psi max line this time tv pinned around 70-75% had same problem after about 5 passes (pissed now) the trans shifted perfect lockup is solid and its not running hot the pan is cool after a pass and fluid is never burnt. type f
Pulled trans again and clutches were fine just a plugged filter. here we go again grrrr. This rebuild I changed the case all new seals, orings and second gear servo. I have a 48re stator support and my converter has a deep neck so I added the stator oring just because... now I have 190-200 psi tv at 70-75% 250 psi tv pinned and 330 in reverse. I hit the track again and make 3 passes and im loosing line pressure on the way back to the pits( down to around 100..... never missed a beat on the pass.
Ok what haven't I done yet???? fluid ahhhhha ill calm the sticky type f down and drain what I can and use dexIII maybe my forward clutches ( set up tight) are grinding/dragging while im in neutral waiting to race is causing the issue.... Hit the track again and made 2 passes and had good line pressure but when I got home I dropped the pan and had same issue, pictures above...
Im at a loss at this point, it was mentioned to call a reputable shop and ask what my problem may be, I can do that but the good guys are extremely busy and I hate chewing up someone's time with my problems on a trans they didn't build, hopefully one of them will jump on here and shed some light.. I think it may help quite a few at some point as your power increases...
A few side notes
I don't idle in neutral for 20 minutes while waiting to race more like 5.
Every time I dropped trans I flushed the cooler. its in the bed with a good working fan and never gets hot.
The converter is a 4 disk 2500 stall and the trips are 3 363sxe they light faster then a cigarette, I roll on throttle get 5psi bump in roll to 10psi 2ng light roll harder and boost rises as the light drops. never feels like I'm blowing through the converter at the line. I lock at 14mph.
Thanks for looking / helping guys, im at a loss. I cant post videos but Jason and Jeff have a video of my last run, maybe they can post it for me...
I hit the track last year and ran a best of 10.1 @132.91. Trans has what I consider best of everything as far as drums, shafts and clutches.
I made about 15 passes last year with small changes to fuel, timing and shift points trying to get it dialed in. my transmission issues last year were hard part failures , stripped internal clutch teeth on the direct clutches and it killed the hub but no burnt clutches, after I replaced the hub and direct clutches I stripped the splines out of the new hub with my input shaft ( truck shifted to second the same time my converter locked) last problem was my front shaft carden joint decided to let go after my launch so I didn't complete my run. each time trans was apart the problem was obvious and no plugged filter. that ended my year.
This year I hit the track with no changes over the winter and first time out I didn't have lockup. pulled trans and found plugged filter and clutch debris. forward clutches were perfect, band perfect, direct were perfect and overdrive were perfect.(I re used everything) I sent the converter out and I was sent a different one to get me racing by the following Friday (kick ass customer service) I made the event got 3 passes and lost line pressure ran around the 10.2 mark. I figured I smoked another converter so I pulled the unit again contacted phill and said I ruined more of your work can you get me out a replacement.... clutches were fine again no slipping or wear.
This time I figured a cross leak in the valvebody or stuck valve or something beyond my pay grade. took a virgin 47re valvebody I had and sent it off to be built so I could rule it out. this time I put it together fresh converter, new clutches and steels and valvebody. had 170 psi max line this time tv pinned around 70-75% had same problem after about 5 passes (pissed now) the trans shifted perfect lockup is solid and its not running hot the pan is cool after a pass and fluid is never burnt. type f
Pulled trans again and clutches were fine just a plugged filter. here we go again grrrr. This rebuild I changed the case all new seals, orings and second gear servo. I have a 48re stator support and my converter has a deep neck so I added the stator oring just because... now I have 190-200 psi tv at 70-75% 250 psi tv pinned and 330 in reverse. I hit the track again and make 3 passes and im loosing line pressure on the way back to the pits( down to around 100..... never missed a beat on the pass.
Ok what haven't I done yet???? fluid ahhhhha ill calm the sticky type f down and drain what I can and use dexIII maybe my forward clutches ( set up tight) are grinding/dragging while im in neutral waiting to race is causing the issue.... Hit the track again and made 2 passes and had good line pressure but when I got home I dropped the pan and had same issue, pictures above...
Im at a loss at this point, it was mentioned to call a reputable shop and ask what my problem may be, I can do that but the good guys are extremely busy and I hate chewing up someone's time with my problems on a trans they didn't build, hopefully one of them will jump on here and shed some light.. I think it may help quite a few at some point as your power increases...
A few side notes
I don't idle in neutral for 20 minutes while waiting to race more like 5.
Every time I dropped trans I flushed the cooler. its in the bed with a good working fan and never gets hot.
The converter is a 4 disk 2500 stall and the trips are 3 363sxe they light faster then a cigarette, I roll on throttle get 5psi bump in roll to 10psi 2ng light roll harder and boost rises as the light drops. never feels like I'm blowing through the converter at the line. I lock at 14mph.
Thanks for looking / helping guys, im at a loss. I cant post videos but Jason and Jeff have a video of my last run, maybe they can post it for me...