RusherRacing
15+ Year Contributor
- 142
- 1
- Jun 21, 2006
-
Yankton,
South_Dakota
DSM tranny problems...
90 Eclipse GSX
I will start from the beginning...
I purchased the car last July. The car is set up for road racing.
Current Drivetrain Mods
New ACT 2600 street disk
ACT chromoly Flywheel
TRE stage 2+ Galant VR4-RS Trans
New Seals in Transfercase
New axles, bearings, tie rod ends, sway bar end links, basically any drive train part, and if replaceable were replaced before I purchased the car.
All the work was done by my master mechanic Brad, he was a mitsu tech for a few years and has worked on multiply extremely modded DSM's unless otherwised stated.
Now here is the story, from memory unfortunately
First event AutoX July 06'
Transmission came loose after the 3rd run!
Created small crack in bell housing
Had Joey at Excessive Autosports in Sioux Falls pull the transmission and weld the bell housing and reinstalled.
Second Event AutoX Aug 06'
Ran fine
Third Event Drag Racing Sept 06'
Ran ok was having some clutch disengagement issues but just thought I over heated the fluid..
Winter-Didn't do much with the car, purchased and remodeled a new house...
07 PreSeason
Changed all the fluids, checked all fasteners making sure everything is tight...
1st event of 07 Drag Racing TnT
Clutch worked good at first (disengagement point seemed low) Slowly got worse throughout the day. Loaded it up since didn't want any thing else to break.
Ordered stainless steel braided clutch line and extended slave cylinder rod, bleed Clutch again and the car already had the extended slave cylinder rod...
2nd event went to MAM for a driver's school, and the car made it through 3 sessions before clutch stopped disengaging.
Put new clutch line in when we got back, and installed a new master cylinder (I just had to try something) prepped for AutoX...
3rd event AutoX continuously bleed clutch found a major problem a quarter size whole in the bell housing..
Pulled the transmission sent it off to Jon at TRE(thanks for the great work Jon) for a rebuild and weld the case since I had to pull it out. I also ordered a new Clutch, Pressure Plate, throwout bearing, and flywheel all from ACT(maperformance). Brad noticed a couple things the spacer between the block and trans was missing, one bolt and spacer on the driver side axle was missing, and the reason for the whole in the trans was we sheared a pressure plate bolt. Brad also happeneds to work now at Chrysler parts department.. So we ordered all new OEM fasteners, spacers, seals for transfercase...
Put it all back together everything worked great. Loaded the car up and headed to MAM for the NASA event. Ran 2 sessions with no time to look over the car in between (I was attending HPDE 2 so I had classes) as I was finishing up the second session the car seemed to shift a little more difficult, I just took the time to look over the car... Red oil every where... Redline heavyweight... Input Seal on the transfercase went to crap. Had a friend bring me my spare case, put that back in ran again the next morning I ended up being stuck in 4th cause the damn trans wouldn't disengage finished of the session working on my line etc. I brought the car back in and oil again everywhere and again redline heavyweight.. The same damn seal went bad. Loaded up headed home, knowing my problems weren't solved...
Pulled the trans back out thinking the disk may have been swelling with oil. The disk measured .305" (act new is .315") so the disk wasn't swelled. I then also had my dad who has been a diesel mechanic all his life look at it. The only thing he could think of is the throwout bearing had a little slop, we compared it to my spare transmission and the sloped seemed consistent and they both measured about the same (don't keep measurements).
I decided just to spray down the disk in brake fluid and reistalled it. It didn't work  It kind of sounds like its over traveling (however it still never disengages). So now I am pulling it back out because with that sound something should show wear or some scratches.
Any thoughts? I spoke with Mike Reichen (215.9 mph standing mile..) with his EVOII and he suggested installing a 96 GST slave has longer stroke and a unsprung 6 puck he said its thinner? Does anyone have any other thoughts...
90 Eclipse GSX
I will start from the beginning...
I purchased the car last July. The car is set up for road racing.
Current Drivetrain Mods
New ACT 2600 street disk
ACT chromoly Flywheel
TRE stage 2+ Galant VR4-RS Trans
New Seals in Transfercase
New axles, bearings, tie rod ends, sway bar end links, basically any drive train part, and if replaceable were replaced before I purchased the car.
All the work was done by my master mechanic Brad, he was a mitsu tech for a few years and has worked on multiply extremely modded DSM's unless otherwised stated.
Now here is the story, from memory unfortunately
First event AutoX July 06'
Transmission came loose after the 3rd run!
Created small crack in bell housing
Had Joey at Excessive Autosports in Sioux Falls pull the transmission and weld the bell housing and reinstalled.
Second Event AutoX Aug 06'
Ran fine
Third Event Drag Racing Sept 06'
Ran ok was having some clutch disengagement issues but just thought I over heated the fluid..
Winter-Didn't do much with the car, purchased and remodeled a new house...
07 PreSeason
Changed all the fluids, checked all fasteners making sure everything is tight...
1st event of 07 Drag Racing TnT
Clutch worked good at first (disengagement point seemed low) Slowly got worse throughout the day. Loaded it up since didn't want any thing else to break.
Ordered stainless steel braided clutch line and extended slave cylinder rod, bleed Clutch again and the car already had the extended slave cylinder rod...
2nd event went to MAM for a driver's school, and the car made it through 3 sessions before clutch stopped disengaging.
Put new clutch line in when we got back, and installed a new master cylinder (I just had to try something) prepped for AutoX...
3rd event AutoX continuously bleed clutch found a major problem a quarter size whole in the bell housing..
Pulled the transmission sent it off to Jon at TRE(thanks for the great work Jon) for a rebuild and weld the case since I had to pull it out. I also ordered a new Clutch, Pressure Plate, throwout bearing, and flywheel all from ACT(maperformance). Brad noticed a couple things the spacer between the block and trans was missing, one bolt and spacer on the driver side axle was missing, and the reason for the whole in the trans was we sheared a pressure plate bolt. Brad also happeneds to work now at Chrysler parts department.. So we ordered all new OEM fasteners, spacers, seals for transfercase...
Put it all back together everything worked great. Loaded the car up and headed to MAM for the NASA event. Ran 2 sessions with no time to look over the car in between (I was attending HPDE 2 so I had classes) as I was finishing up the second session the car seemed to shift a little more difficult, I just took the time to look over the car... Red oil every where... Redline heavyweight... Input Seal on the transfercase went to crap. Had a friend bring me my spare case, put that back in ran again the next morning I ended up being stuck in 4th cause the damn trans wouldn't disengage finished of the session working on my line etc. I brought the car back in and oil again everywhere and again redline heavyweight.. The same damn seal went bad. Loaded up headed home, knowing my problems weren't solved...
Pulled the trans back out thinking the disk may have been swelling with oil. The disk measured .305" (act new is .315") so the disk wasn't swelled. I then also had my dad who has been a diesel mechanic all his life look at it. The only thing he could think of is the throwout bearing had a little slop, we compared it to my spare transmission and the sloped seemed consistent and they both measured about the same (don't keep measurements).
I decided just to spray down the disk in brake fluid and reistalled it. It didn't work  It kind of sounds like its over traveling (however it still never disengages). So now I am pulling it back out because with that sound something should show wear or some scratches.
Any thoughts? I spoke with Mike Reichen (215.9 mph standing mile..) with his EVOII and he suggested installing a 96 GST slave has longer stroke and a unsprung 6 puck he said its thinner? Does anyone have any other thoughts...
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