Last year I developed an interesting issue, and want to figure it out before track season this year. Car is a 1993 Prelude Si, with the M2S4 5MT. Currently running on a JDM H22, and an Exedy Stage1 clutch, stock flywheel.

My problem is, after well heated at the track, the car doesn't want to shift into 2nd gear. The trans shifts fine into 2nd at all other times, with no grinds. Once I have done 4-5 passes, I can't get the car into second, and the problem usually persists as I drive the car home, but is fine the next day. The only changes I made this last year, have been going from street tires to drag radials, and doing a 2nd gear burnout in the water box before each run.

I am wondering if I am just overheating 2nd somehow, and causing the syncros to bind up and not work? Is this the kind of problem I can fix with different fluid, or will it take new syncros? Current fluid is fresh Honda MTF, as of July 2010, with under 500 miles on it currently.