PM-Performance

just wondering if anyone tried this yet?

i just had 3rd gear go on me last night, and im gtting sick of replacing these things. this is the 5th time im replacing syncros.

anyone have any insight on if this works?

HXMan

You should try it....

Rod.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">just wondering if anyone tried this yet?

i just had 3rd gear go on me last night, and im gtting sick of replacing these things. this is the 5th time im replacing syncros.

anyone have any insight on if this works?</TD></TR></TABLE>

I have 149,000 on my tranny it shifts great. I got the car used though so I do not know if they been changed or what. What makes syncros go out easily? Hp,grinding or what

Br1t1shguy

wait this is on you're ITR?

Damn, you must have a bad box or something, because the stock boxes pretty much never break.

How much power are you making? I'm making anywhere from 350-450 depending on boost with no problems and theres a guy around here running 700whp on slicks with no problem.

PM-Performance

this is box #4 that broke on me now. they just cant take the abuse. it seems to happen with loss of traction. when they break loose like crazy and i try and shift if gets a slight grind, then its all down hill from there

Full-Race Javier

fwiw, my previous trans was cyro'd (sr20 fwd). it lasted a little longer than stock cryo will help, but it wont be bullet proof.

Justin Olson

It may be the driver and not the transmissions

Full-Race Javier

lol...i was already in gear rolling into it, hit 1 bar and 3rd went out with a bang time put the 6speed tranny in

Joseph Davis

ITR gearboxes are known to have problems with 3rd gear synchro. Anything that gets spun so high, oe driven hard, is going to.

Harry Doyle

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">ITR gearboxes are known to have problems with 3rd gear synchro. Anything that gets spun so high, oe driven hard, is going to.</TD></TR></TABLE>

true, everyone iv known with an ITR, including myself has had trouble with it

PM-Performance

i just wish there were some choices on the market.im sick of tearing this thing down. someone sent me a link to sme carbon coated syncros.
anyone know anything about these?


http://gear-speed.com/

Joseph Davis

I was talking to an older dude today, 45 y/old, career machinist, and he was telling me about some guy up in .ca who machined custom gears for Honda transmissions, and the .ca guy claims they are nearly bulletproof. I'll ask him for contact info, the prices were steep because the guy won't sell just parts and labor + shipping to/from .ca w/ GST is hefty.

The Crow

Try some GM Synchromesh. It fixed my third gear grind.

PM-Performance

i couldnt fine synchromsh so i just got some Valvoline synth **** it was like 70w90 or something. im hoping that helps

DaX

iTrader: (1)

I had to go to three dealerships to get synchromesh and when i found it it was $12/qt. Next time I'm buying online by the case, only $6/qt. that way.

Just curious...for your previous rebuilds were you buying synchros from the dealership? How much was the 3rd/4th synchro set running you?

I rebuilt my third transmission this weekend, and I too am getting sick of it.

PM-Performance

igot lucky.they covered the others under warranty

mike1114

iTrader: (1)

Just a fyi, it is driver error why we all have grinding in 3rd gear.

Synchromesh doesn't do ****.

I hate this problem too, my 3rd is about to go on me also. Tired of R/R trannies.

DaX

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike1114 &raquo;</TD></TR><TR><TD CLASS="quote">Synchromesh doesn't do ****.</TD></TR></TABLE>

I thought the same thing until I tried it. It has truly made me a believer. After a fresh set of bearings, seals, and oil guides I added Synchromesh. The 3rd/4th grind that was near impossible to avoid has all but disappeared.

PM-Performance

trust me its not driver error.the tranny just cant keep up with the hard shifting

hackish

I seem to remember there is a shop up here making straight cut gears with dogs for one of the integra trannies. That's a wonderful way to avoid synchro problems - remove them completely and use dog engagement. It's not friendly to drive on the street.

If you were to send your box up to Canada don't forget the $CAD is cheaper than $USD and I believe you can apply to get the GST back.

For your existing synchros just blindly getting them cryotreated is unlikely to solve your problem. You should find out what they're made out of. Find out if they're standard with any other trannies - often times a good tranny shop/machinist can make/match a more heavy duty part and make it work. If you're stuck working with the stock piece then you should determine how they're failing. If they're shattering then cryotreating definitely won't help!

By your description it almost sounds like the part itself failed suddenly ie broke. This would make me wonder if it's already hardened too much in stock form.

-Michael

PM-Performance

they are brass. they are far from to hard. they are soft.