Sorry its a bit lenghty but its driving me nuts…
I have been swapping my tranny twice now and the same problem is happening. When I am driving in 5th gear, the shifter would automatically “pop” out of gear and go into neutral. This has really been a puzzle to me. I cant seem to find out the true underlying cause. My car was originally an AT and converted to manual. Both trannies were JDM B16a S1. I had my motor mounts, shift linkages examined for misalignment or wear and still could not come to a conclusion. They told me that Im either unfortunate that both trannies were coincidentally bad.
The car drives well 1st- 4th gears in both trannies no problem except always 5th gear. I had read some forum members mentioning that they had a b16a with an LS 5th gear setup.
MY car has regular b18a with i/h/e . Is there such thing as incompatibility or do I need to modify the B16a tranny’s 5th gear?
Lastly, my friend’s G2 also had a AT-MT swap and never had this problem. Only difference is he had a LS tranny.
Anyone with opinions and tips please help. Thanks