replacing tranny syncros...

[TheSparo]

anybody ever done this? my 3rd gear always grinds going in, and im assuming its the synchro, would it be hard to replace them? also how much would it cost if i didnt do it myself?

-Jeff

[Wei240]

yeah, same here, sometimes grinds whenever i go from 2 to 3 or 2 to 4 only when it's revved hard

[ultraprince]

Originally Posted by Wei240

yeah, same here, sometimes grinds whenever i go from 2 to 3 or 2 to 4 only when it's revved hard

you have to be expierenced in trannies. I know a quite a few people who did it them selves on hondas, i'm assuming it would be at least as hard as that.

[kandyflip445]

It's easy if you can keep everything in order and not have ppl mess with it. Having a FSM helps a lot too.

[thx247]

Would be a more cost effective thing to just replace the whole transmission.

[RedlineRacer]

Speaking of syncros I think mine are going but I am not sure. Like all the bottom gears: 2, 4, and Reverse have a hard time staying in gear(especially 4th). Like I'll shift to 4th, be riding down the road and it falls to neutral. Is this syncros. Sorry to jack your thread man, but I think it has some relevance.

[pr240sx]

Use a lower grade oil first
Could be that the oil in your tranny needs changing, is low on fluid or its too heavy.
Also could be that the clutch is not fully disengaging, check the pedal height and travel

[aznpoopy]

Originally Posted by thx247

Would be a more cost effective thing to just replace the whole transmission.

i agree. just get a used tranny for $200 or so. rebuild the old one at your leisure as a learning project or sell it. first, i would try new oil or changing oil. i think alot of people have said good things about redline mt oil and gm synchromesh. i'm probably going to have swap a tranny this summer.

[kandyflip445]

I second the changing of fluids, if you haven't already. I did mine and it made a world of difference. I used Penzoil Syncromesh cause I've heard it's the same thing as GM syncromesh. Don't know if it's true but it was a lot better than the FACTORY fluid that was in there(since is was the original fluid for ~140k).

[pr240sx]

I prefer to change fluids first. Way cheaper than replacing the tranny
Use GL-4 oil NOT the GL-5 or you will loose your synchros
Also, check your clutch hydrolics for damage, misadjustments or low oil even before changing your fluid

[Wei240]

i just changed mine w/ penz synch, and still have same symptoms, but it's not that bad, just annoying at times. meh, i'll change it when it gets really bad...

[TheSparo]

i changed mine a while back, but not with name brand stuff, i have a spare KA tranny in my garage i could do, then swap the bell housings once i did it... any idea on pricing? i just dont wanna have to spend $200 on a tranny that has 100k miles or more, or one w/ gears worse than mine...
-Jeff

[ultraprince]

if it's your tranny fluid, wouldn't all your gears be grinding?

[Var]

Originally Posted by RedlineRacer

Speaking of syncros I think mine are going but I am not sure. Like all the bottom gears: 2, 4, and Reverse have a hard time staying in gear(especially 4th). Like I'll shift to 4th, be riding down the road and it falls to neutral. Is this syncros. Sorry to jack your thread man, but I think it has some relevance.

The problem you're describing sounds more like bearings. The syncros only do something when you shift. Test it by putting into gear.Smoothly accelerate then abruptly let off the gas. It should pop into neutral if your bearings are messed up.