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75-110 for Differential
5w30 Manual Synchromesh Transmission Fluid (this will also resolve 2nd gear pop out and other gear issues, I've recommended this SO many times, and every single one has saved the owner thousands in unnecessary parts replacement, I will recommend this until my dying breath as one the easiest fixes for gear issues): https://www.s2ki.com/forums/s2000-un.../#post24527946)
75-110 for Differential
5w30 Manual Synchromesh Transmission Fluid (this will also resolve 2nd gear pop out and other gear issues, I've recommended this SO many times, and every single one has saved the owner thousands in unnecessary parts replacement, I will recommend this until my dying breath as one the easiest fixes for gear issues): https://www.s2ki.com/forums/s2000-un.../#post24527946)
damn. Wish I saw this sooner. I still have some high speed grinding between shifts. I’m assuming the synchros are worn and not sync’s as good as they should.
damn. Wish I saw this sooner. I still have some high speed grinding between shifts. I’m assuming the synchros are worn and not sync’s as good as they should.
I'm not exactly sure the specific reason that it's happening, but I can tell you that every person I know that tried it has resolved their 2nd gear pop out and smoothed out the shifting.
I've had a couple dozen owners thank me for this recommendation, my biggest contribution to the community
The s2000 has a racing type gearbox with an oil pump ,an <Italian tune> is a good idea with high rpm once warmed.ie 5/6/7/8/9/k+ through gears often.
This is to get the synchromesh lubricated. And in situ.
The s2000 has a racing type gearbox with an oil pump ,an <Italian tune> is a good idea with high rpm once warmed.ie 5/6/7/8/9/k+ through gears often. This is to get the synchromesh lubricated. And in situ.
I also used this thread from Billman in 2011 about reworking 5 and 6 gear if they have burrs on them and applied this to the entire gearbox after changing to Amsoil.
Billman:
"You developed burrs on the 6th gear side of the 5th-6th gear drive cog, and skip shifting made it worse. With the car cold in the morning, row the shifter from 5th to 6th about 100 times. Sometimes, you will get lucky and knock down the burrs and the transmission will fix itself. This must be done after the car sits overnight and has not been started, so most of the oil has drained off the cog. you want a dry cog for this fix. Afterwards, OPERATING the car under load in 5th gear and 6th gear (WOT then off then on) will further flatten thwe burrs and could possibly cure it completely. There's a thread title about a guy losing 5th gear after a track day, I told a lot of this issue in that thread."
and
"It is very easy to think that skip shifting has no bad effects on the trans. But believe me, it does. you are making the syncro, and the cog, engage the gear under opposing speeds that they were not designed to do. Now if you ROW the trans (put it in 5th without letting clutch out) into 5th gear first, then 6th, no harm is done. If you take 2nd gear to redline, then get lazy and want to go to 6th, if you row the trans 3-4-5-6, then let the clutch out, no harm done."
Eff me. I had no idea skip shifting was harmful. I used to skip 5th a lot. Makes sense that I’m having the issue. I’ll see if I can try Bill’s debur method.
@Thomas Guide Thanks for reminding us about why we should not skip shift the gearbox. Been rowing thru the gears for probably as long as I've owned my S2000 but never before this time despite a dozen of stick shift cars. Reading the linked threads and those linked to them .. was useful reading. Was surprised skip shifting only applies to up shifts. I do it regardless.
@Dibsen Honda recommends adjusting the distance at the linkage. I'm not sure if the result is the same if adjusted at the pedal the way you're doing. A slightly more "precise" way is to hold a straight edge at your throttle cable to make sure it's straight, then, tug on the cable at the very center straight up, then straight sideways and use a ruler to measure the deflection at the center of the cable and adjust accordingly. (the second pic is not mine, it's too much slack, but shows what that means)
07-13-2024, 03:42 AM
