serious clutch judder
 

Hi have just had fitted exedy uprated organic clutch with anti judder disc and lightwieght flywheel to my 05 wrx, when pulling away or gearing down am getting considerable judder now im hoping the reputable clutch fitters have done their job right but as I supplied the parts the parts are getting the blame and the fitters say its not them thats at fault....any thoughts anyone

I just picked up my jdm 03sti lastweek and i have the same problem but mostly from cold once the car is warm its better

Mine was fairly juddery to start with after having a pink box and lightweight flywheel fitted but it settled down after a couple of hundred miles. It's still a bit so when it's cold but soon feels ok, give it time and it should settle down.

This judder rattles the windows and bootlid....when the item is described as"drives like standard clutch"have I been expecting something I shouldn't

was the clutch new or used?
was the flywheel new or used?
was the flywheel inspected/skimmed prior to installation?

Clutch is new (with anti judder disc), flywheel new lightweight and balanced as far as fitting goes I cant answer

id check that the clutch is genuine and be questioning the quality of the flywheel then.


ive fitted a blur/grey box exedy clutch (from import car parts) along with a used oe flywheel which I wire brushed and checked for flatness and its perfect. no judder atall.

My clutch in my car is a complete wanker when cold, once warmed up it's fine

Exedy 6 puk in it.

Could i have air in mine as when stopped at lights clutch peddle is high before bite then next set it can bite low down

If it's after a good thrashing then it may be due to moisture content. When mine did it a bleed with quality fluid fixed it.

Only had the car a week its been on a boat from 26th may so could it be cause of that

The clutch waschanged only yesturday 1st gear pull away is a nightmare whole car judders changing downgears is the same

Thats the same as mine but i dont know what clutch it has as was in it when i bought the car

You gota go easy on it let it bed itself in

Is this normal for a pink box kit it was advertised with a anti judder friction plate and flywheel and will pull away improve

As you can probably tell this is the first clutch I've had changed

I wouldn't expect issues like that with a pink box, i have a competition clutch (stage4) and it has similar issues but is designed for competition use. There are lots of copy items floating around so unless you bought it from a reputable supplier I would say you might have been tucked up.

Speak with alyn at ASperformance he will source you a clutch you can live with f

I got the clutch from aztec performance it all came nicely boxed up withproduct numbers so im asuming its all legit

Hi Jase,

Good talking to you on the phone. :cool:

It goes without saying that the parts we supply are legit, goes without saying (highest ranked clutch sellers on ScoobyNet) and been trading for over 7 years. People are quite right to be cautious though, just a quick glance at ebay tells me there are more fakes being sold on there than there are legitimate ones.

Give the clutch some miles to settle in. :)

Cheers,

Bob

i disagree, I don't see why it should need to bed in. you've got confirmation of the quality of the clutch so Id suspect the flywheel.

How can a anti judder clutch need time to bed in you purchase it cause its not supposed to judder

I always thought new clutch needed bedding in like brake pads sort of thing? On my old 99 I had a new exedy clutch put in (unskimmed flywheel) no judder what so ever the mech who fitted it said just drive easy for 100 mile to bed it in nicely,
New car car, new exedy fresh skimmed flywheel I get judder in 1st un less I'm generous with the revs, Ive got used to it after 600 mile

Parts using friction materials usually need bedding in.

You wouldn't fit a set of performance brake pads and expect "performance" from them right from the start. They would need heat cycling and bedding in, doesn't stop them being performance pads ;)

500-600 miles is typical for clutch bedding in.

Exedy FAQ:

What is the recommended break-in period for high-performance sports clutches?
Break in period should be that of 500 miles of city type driving, double the break in period for highway driving. No aggressive driving. No hole shots or drag launches. Gear changes should be made at 4,000 RPM or less. No speed shifting.

We had a chat about this the other day didn't we? :)
Being fair, I'd expect a new clutch to bed down before you can really judge. The organic material starts out with a rough surface and ends up smooth, so something must be going on!
Like the man says, give it 500 miles (patience is a virtue).
I bet Mo Farrah beds in his Nikes first, yes?

You are being very nice, after reading the other thread I was expecting a "I told you so" but in my opinion light weight flywheels are shìt. I used to have them on my bikes for a time (not road bikes) and unless you are going all out there crap.

op, its the flywheel, one of the jobs of a the flywheel is to help manage momentum on the dead stroke, yours isnt.

Would the rubber insert in the crank pully make a difference to the judder,OP have you got the rubber fitted in the crank pulley?

i had 2 brand new exedy uprated organic clutch fitted and both of them bollocks! and no they wasnt fake and they came with all the juddering your talking about.
fitted a ap racing clutch and it drove like new.

Where did you buy them from and what were the part numbers?

Did you only remove the Exedy clutch and replace with an AP or did you skim/replace the flywheel also?

AP have numerous total failures and they only sell a small amount compared with Exedy: https://www.scoobynet.com/general-te...shattered.html

New std genuine subaru flywheel was fitted with the exedy clutches,first exedy there was something wrong with the centre plate,was replaced with a free replacement but wasn't much better.
Got fed up with the juddering and had it removed and replaced with a ap racing clutch.
This was about 3-4 years ago,I have no part numbers,I'm not naming any suppliers as this is no longer an issue for me