When revmatching is it better to be above or under specified RPM?
 

Say I'm at 2500RPM in whatever gear, this would put me at a hypothetical 4000RPM in the next lowest gear



If I revmatch, is it better to be above or below 4000RPM when I release the clutch? I know it's PERFECT if you do it spot on but does more damage occur at letting the clutch out at say 3750RPM or 4250RPM?

I would think it would be worse at a higher RPM due to the inersia being released . Lower RPM less centrifugal force for the clutch to grab and hold. Idk my 2 cents.

Good question. I guess the same amount of force needs to go through the clutch either way, so as long as you let the clutch out at the same rate both times, the stress would be equal?



My clutch tends to chatter if I rev too low, so it is less comfortable for my passengers.

I always aim for a bit higher if I can't match perfect.

I don't worry about damaging the drivetrain so much as whether I'm going to be jerked forward or back. If you want to lurch forward, rev lower. If you want to be jerked back in your seat, rev higher. The other consideration is traffic ahead of you - if you are trying to brake to avoid a collision, rev lower.

damage? high... your clutch has to slow the engine down if you are above the engagement point RPM. You will bog a little if you go low, but I don't see it hurting anything and do the jerk thing already mentioned. However, each are sort of meh.. compared to not doing it at all. I go a little high because... MOR POAWA