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View Full Version : bye bye synchros

JDMFantasy2k
05-30-2005, 09:45 AM
unbelievable. The other night i get in my car, and all of a sudden my 3rd gear grinds every time i shift up to it. :mad: I don't know how it could happen cause i haven't grinded a gear in ages and my car only has 57K miles.

i figure i'll have to look into some of the famouse GM synchromesh tranny fluid. Any other ideas or things to look for?
pdiggitydogg
05-30-2005, 10:30 AM
They dont go when you mis-shift and grind, they tend to go faster when you shift in the higher rpm's.
Dont get too upset, honda trannies arent exactly the toughest things out there...my 3rd has a slight grind too.

GM synchromesh (friction modified) fluid - Part # 12377916.
Its a lot more than honda mtf, but it does work (as a bandaid).
Next thing, if you feel like spending the cash, is buy new synchros.
ChrisCantSkate
05-30-2005, 10:44 AM
yeah, hondas great idea for brass syncros... well... sucked. "lets use an extremely soft metal for something thats going to take on alot of wear"
JDMFantasy2k
05-30-2005, 11:11 AM
nah i'm not about to buy new synchros, if anything i'd be saving for a swap. thanks for the support
thermal
05-30-2005, 11:32 AM
If you do decide to get new synchros, get the Gear Speed version. Tougher material and coated. GM synchromesh does magic...........
ebpda9
05-30-2005, 11:49 AM
or you could get an automatic. never grinds ;)
ChrisCantSkate
05-30-2005, 03:04 PM
how much is that GM stuff? i need to replace my tranny fluid soon.
pdiggitydogg
05-30-2005, 03:33 PM
Some dealers really want to rip you off on it for $15/qt
Others will sell it at list of $11-12 or less (Ive heard $9)
ChrisCantSkate
05-30-2005, 04:06 PM
hmm.. i'll ask my room mate if he knows of a place when he gets back... he's big into the z28 scene
nonovurbizniz
05-30-2005, 10:44 PM
the penzoil packaged version is cheaper and they're who produce it for GM...

I use the non friction modified one... just because that's what autozone stocks.
pdiggitydogg
05-31-2005, 05:28 AM
I still cant get that stuff here....
AzCivic
05-31-2005, 11:08 PM
the stuff took me from grinding 3rd while shifting at anything ovr 5grand to chirping 3rd when shifting at redline in my last tranny.
nonovurbizniz
06-01-2005, 08:03 AM
yeah I had whirring and grinding at like 80k miles... I JUST replaced the trans with 204k...

I'd say it'll get some extra miles out of the trans to say the least.

And I BEAT on my car daily.
JDMFantasy2k
06-01-2005, 12:46 PM
Originally posted by nonovurbizniz


And I BEAT on my car daily.

yeah i'm guilty; can't help it. If i baby it under 4K it's alright but over that and it's almost guaranteed unless i wait a few seconds
nonovurbizniz
06-01-2005, 03:03 PM
yeah get some synchromesh... it'll probobly buy you some time...