BLACK'98DSM
5+ Year Contributor
- 4,450
- 1,889
- Feb 9, 2019
-
Alabama
Looking for ideas as to why my NVT-350 is now popping out of every gear (besides reverse, which it will not shift into.)
Backstory: I was out tonight to do a test run. From a dead stop, I did a hard launch (started slipping clutch at 4500 rpm, she was hooking so I quickly engaged). Everything was great until 7k when she popped out of 1st and quickly over revved. I thought I broke 1st gear until I realized it was just thrown back to neutral. I slowed down a bit and put it back in 1st to verify functionality, 1st held up until I started accelerating then popped back out. Decided to shift into 2nd and take her home. Quickly popped out of 2nd and then 3rd after. Any medium to heavy throttle pops it out of every gear, verified on the highway. Was able to drive home very gently with still an occasional pop out. Once I made it home I traced out the entire shifter cable assemblies to make sure there was no issue with them. They appear perfectly fine, everything still tightly secured and undamaged. It's only been a couple of years since I installed new OEM ones anyway. Next I checked for fluid leaks, possibly from a broken belhousing. But everything is still clean and she's still full. Soon I'm planning to drain the trans fluid and hopefully see the degree of the damage (will post findings). I have very much doubt that all of the synchronizers became shot at once. Something with the gear shafts must be out of line.
Looking for suggestions and thoughts. I've battled many trans issues in the past but never had this one. Seems like a strange issue especially for a freshly rebuilt transmission that supposedly holds up nicely in turbo cars.
Backstory: I was out tonight to do a test run. From a dead stop, I did a hard launch (started slipping clutch at 4500 rpm, she was hooking so I quickly engaged). Everything was great until 7k when she popped out of 1st and quickly over revved. I thought I broke 1st gear until I realized it was just thrown back to neutral. I slowed down a bit and put it back in 1st to verify functionality, 1st held up until I started accelerating then popped back out. Decided to shift into 2nd and take her home. Quickly popped out of 2nd and then 3rd after. Any medium to heavy throttle pops it out of every gear, verified on the highway. Was able to drive home very gently with still an occasional pop out. Once I made it home I traced out the entire shifter cable assemblies to make sure there was no issue with them. They appear perfectly fine, everything still tightly secured and undamaged. It's only been a couple of years since I installed new OEM ones anyway. Next I checked for fluid leaks, possibly from a broken belhousing. But everything is still clean and she's still full. Soon I'm planning to drain the trans fluid and hopefully see the degree of the damage (will post findings). I have very much doubt that all of the synchronizers became shot at once. Something with the gear shafts must be out of line.
Looking for suggestions and thoughts. I've battled many trans issues in the past but never had this one. Seems like a strange issue especially for a freshly rebuilt transmission that supposedly holds up nicely in turbo cars.