I need your help, my car has been In the shop for some time now, I have added some aftermarket parts along with an exxedy clutch, I have been driving my car for two days now and it feels great, except that after doing some test and tune today my car stated to emit a whining noise that sounds like its coming from the transmission, it’s like a very loud wine almost sounds like an ambulance siren, my friend also has an evo 8 and the same thing happened to him a while back, I was wondering if anyone has had this problem before.

 

apparantly thats normal on some of the aftermarket clutches...especially if it is a twindisc....search more of the threads....especially the ones that compare the exedy vs the act clutch

 

could be your Transfercase. check some of my threads. Mine started to whine after a clutch install. mine sounded like a tornado siren, on acceleration 4K-6K. the higher the RPM, the louder it got. took foot off gas, problem went away. at what RPM does it happen? call Jon at TRE (team Ripp) in Kalamazoo Michigan. he will help you troubleshoot it. He goes by the name GEARS on here. need more info than you listed. mods,miles,when it happens etc...

 

i have a twin disc and i have no problems with it

 

You could have damaged:

1st gear on the input shaft
1st gear on the output shaft
Final drive gear on the output shaft
Final drive gear on the center differential
OR
Ring & pinion in the transfer case.

I guess it all depends on the roll of the dice and how high you tached up the engine when you took your foot off the clutch or how fast/hard you dumped the clutch...

FEI--- don't over clutch. By this I mean don't use a clutch that has some wildly high torque capacity unless you want lots of broken parts. The clutch is suppose to slip before you break parts, similar to how the rev-limiter keeps most of you from scattering the engine.

A better analogy would be like having the drag set way to high on your fishing reel for the line that you are using....

So what do I recommend for torque capacity???

About 500ft.lbs or real close to working torque of the drivetrain. If the clutch only has a torque capacity of 500 or less then failure of any drive train component would be rare and only happen after several fatigue cycles.

What is the working torque of the transmission?

500ft.lbs

Ghost of a chance is 500-750ft.lbs

Ghost of a chance is what gear makers refer to as, "There is a ghost of chance that it'll survive IF the gears don't see impactive shock loading" such as from abusive clutch dumps.

Anything above 750ft.lbs of torque is considered "barrowed time" and it will fail, it's just a question of when....

Summary, choose your clutch wisely.


Jon@TRE
http://www.teamrip.com/Evolution.html

 

gears is the man

 

That's it, thats the same thing that my car does....

 

-

Thanks gears, that helps a lot,
Where can I find stronger parts for the tranny ?

 

This one is easy ... from the link in Jon's aka "GEARS" signature ...

www.teamrip.com

 

so what did you have to do to fix it?

 

Stronger parts?

The factory stuff is very stout by anyone’s standards and you really shouldn't be failing the transmission unless you are making over 500ft.lbs of torque or dumping the clutch like I do when playing GT-4.

If you're somewhat respectful of mechanical land you really should have any breakage type problems.

Jon@TRE

 

I got one that wont bust from.....lets see...............JON at TRE! he will not steer you wrong!! and wont sell you anything you dont need! he da man!

 

Not to hijack the thread but what about a 1 time CRUNCH noise in 2nd gear once the car pulls hard and sometimes when backing up while turning at cold start, I'll hear the differential CLANG

 

not sure of this one, what fluids do you use? in the trans and TC?

 

Damn....you got that noise too?

I'm not sure but I hear it every now & then when I back up in the morning.

Anyone else?

Jon