One.Rx-7

I dont believe its an issue with your clutch. Its most likely a tranny problem. Syncros is a possibility, but id be willing to bet its an issue with the detent system on the shift rails specific to those 2 gears. $$$ wise it would be much much cheaper to buy a new tranny then rebuild, if that was the issue.

totallimmortal

what i'm asking is do i need a rebuild and are my sychros bad? i know about rev matching and double clutching

hpram99

I managed a pretty good technique of rev matching while passing. (people go so slow around here...)

Mash the gas to the floor. While it's still floored, quickly smash the clutch in and out while pushing the stick to the gear you want. You never let off the gas, and almost allways a perfect smooth, extremely-fast downshift, as if it were a fast shifting automatic.

One.Rx-7

If your syncros were bad, u would experience trouble shifting period, not just downshifting. And rather then rebuild, its cheaper to find a tranny.

fstrnyou

And what happens if you don't get it into gear fast enough? You'll be all over the rev limiter before you let off the gas.

MARTIN

ok first of all this happend to me when I put a new tranny in my car. Its a quite simple fix. First try this this. when you start your car while its in nuetral rev it up, now put it in first gear and and with the clutch pressed in all the way rev your engine again. If you notice that your engined reved faster with it in neutral then your clutch isnt disengaging completely. Simply adjust the clutch pedal. If you dont notice a difference then its most likely your syncros. If its the syncros then pik up a used tranny, about $90 down here.

wargoblin

I have had some tranmission problems with some grinding (upshift and downshifting). Nothing to serious yet (that im aware of). But strangely enough, it feels alot better when its cold. Anyone have an explination? or am I crazy?

oregano

iTrader: (1)

" But strangely enough, it feels alot better when its cold. Anyone have an explination? or am I crazy?"

maybe the tranny oil is thicker when its cold and helps the synchros out.

"Mash the gas to the floor. While it's still floored, quickly smash the clutch in and out while pushing the stick to the gear you want. You never let off the gas, and almost allways a perfect smooth, extremely-fast downshift, as if it were a fast shifting automatic."

lol. ever try shiftin from 1st to second gear without letting off the gas?? now thats fun!

hpram99

never happened, it works so smoothly that the rev's are perfectly matched, it seems like you could almost do it without the clutch. And if you can't get to it fast enough... you shouldn't be driving a sports car.



yep, in my 626, I beat the **** out of that car. I swear to god that clutch was indestructible.

superevil

i know when i got my car,everytime i tried to shift from 1-2-3 at high rpm's id grind it terribly.and down shifting 4-3-2,like coming out of fast curves,it would either grind or not go.but i learned to match the reving,and now i can do whatever and no grinding

JackoliciousLegs

If you car can shift up normally, your synchros are fine. If you can revmatch and shift, your tranny is fine. If you have to double clutch every time you shift even at the proper rpms check clutch system pressure, then it's your tranny fanny...

jhillyer

One function of an in-spec synchro is dampening and resisting attempts in mating mismatched driveline spin rates.

Double-clutching is smarter driving and independent of the types of manual transmission, even helping a Tiptronic. Matching the driveline in upshift and especially downshift (lowering gear) is the work of a more precise and sporty operator/driver.

After this skill becomes habit and background, try the difficult heel-toe braking while RPM-matching during downshifts. One may need to adjust clutch and brake assemblies to assist.

But, each of us probably knows at least one synchro-smashing lazy-foot.