so i got my new evo about 5 weeks ago and there seems to be some trans problems. i need to know what you guys think i should do. so from the getgo it was a little off it has a stage 3 clutch that seems to have alot more chop than it should also you can hear the clutch itself (not trans) grinding around when you take off slow, or let your foot off the gas with it still in gear. now for thae trans itslef it works perfect for DD around all slow but you need to push the clutch to the floor to make shure your not gonna grind, whhitch i dont think should be the case with the stage3 clutch. also at high seeds or a high rev there is no way your going into 4th without a BIG grind also every once and a while its hard to get into reverse seems to slip into a spot just to the left of the real reverse and not go fully down also today i floored it in 2nd shifted into 3rd and it made a huge grind and it wasnt my fault. I just chaged my trans oil with ams syntc and it fellt alot smother but didnt help any problems anyway im thinking my 3rd and 4th have bad syncros and possibly rev. anyway do you guys think i need to get my trans rebuilt? can a handy car person do DIY never haveing rebult a trans before? should i take it somewhere? it there a rebult kit? do you think i will eventualy need a newtrans? or do you think this all stems from a bad clutch job?

 

Sounds like clutch chatter. It's normal for this to happen on occasion with aftermarket clutches. But if it's happening ALL the time, The must be an issue. There are a few different things that can cause chatter.

It is certainly possible your synchros are bad, but rule out clutch adjustment first. Try to adjust your clutch so it grabs higher off the floor. Also, you can spend $30 or so and buy some shifter bushings. If you're grinding, chances are it's a synchro problem, but it's nice to rule out the free, easy and cheap things first.

 

thanks for the info, can you tell me how i can try and adjust my clutch to grab higher?

 

On the clutch pedal under the dash you'll see a rod with a jam nut. You break the nut loose and spin the rod clockwise. Spin it about 5 turns total. Then take a test drive an see how it works. Then adjust from there.

If you search I'm sure you can find pictures if you need them. There is a how-to on here somewhere.

 

https://www.evolutionm.net/forums/ev...djustment.html

 

perfect! ile give it a try today. some ppl say take it in some say take it out i guess i have alot of testing to do

 

Giving the pedal move travel and the grab point higher will make the clutch release further. Typically the reason you'd adjust the clutch for reasons like this would be to give the clutch disc the ability to rlease further making shifts much easier.

If the transmission is grinding, it's probably a syncro problem. BUT you never know. This is a free and easy test, so why not? Simply being lock-out and trying to engage the clutch at the same time will result in a grind, but it's because of the lock-out. In a sense it's driver error. Even the best of drivers can grind due to lock out.

What happens, is when you're pulling the shifter back, you basically hit a brick wall. And in you're mind you're ready to start enaging the clutch (this is all in the matter of 0.2 seconds, by the way). As your arm is still trying to fight the lock-out, you're already lifting off the clutch (because you think you should be in gear by now, but you're not). When the clutch starts to enage with the transmission is trying to be forced into gear it will cause it to grind. It can happen to ANYone, usually when they're NOT expecting lock-out to happen. If you are expecting lock-out you can get through it without a grind.

 

well i tryed adjusting the clutch both ways. it still was grinding. so is there a trans rebuld kit where i can fix my syncros? or what is a good price for a shop to have this done?

 

Based on what you're saying, I'd say it's the synchros in the tranny, not the clutch. Grinds when shifting at high RPMs and dificulty to get into reverse are classic syncrho symptoms. Ask me how I know. You're probably due for a rebuilt tranny.

 

Shep and TRE are the two big names when it comes to rebuilding transmissions. I'd look into both and see what works best for you.

Before you take the plunge, have somebody diagnose it, just to be sure. Unless you want a built trans, don't spend the money if you don't NEED to