Just came back from the dyno to tune the car and had clutch problem.

We are using the exedy twin disk and over 15 pound of boost, clutch is not holding on and slipping. Now pedal is way to high and clutch is really slow to engage.

Just wondering what you guy's are thinking about break in for the clutch ? It is necessary ? Pretty hard to do a break in of 500 miles on a drag car. If so, how you do it ?

Any other thing to check or upgrade like clutch master cylinder ?

thanks

 

I never broke in my exedy twin disk, and it works just find... Are you sure it was installed properly? if one of the disks were flipped around backwards, it might cause that problem...

Mike...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Group Tenacity &raquo;</TD></TR><TR><TD CLASS="quote">I never broke in my exedy twin disk, and it works just fine.


</TD></TR></TABLE>

same here.

 

same here

 

Ok , thanks for the reply. Think i found the problem. Probably the disk to the flywheel was install on the wrong side.

here's some pic :

Think this one as to go the other side


rivet grinding against the flywhhel bolt


a lot of heat


if anyone as pic or the crrect order for disc let me know

 

seems like a good canadian tire install

 

My disc have letters telling which disc faces what side so I cant say which one goes where. I also had a problem with the rivets rubbing the flywheel bolts so I grinded the bolts down a bit. Also the disc cant be lined up exactly the same. Once its installed, when you look through the big holes of the first disc, you must see the smaller holes in the second disc on the flywheel side. I have the instruction but no scanner so let me see if i can take a picture and post it.

 

Heres a picture of the disc that faces the flywheel.


This is the same disc but this side it pointing towards the tranny.


As you can see the side that faces the flywheels is the side with the black circular thing haha

This disc is the last one to go on and you can see the center spline area its raised. This faces the pressure plate.


Hope that helps.

 

i broke mine in at the track

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by untuned &raquo;</TD></TR><TR><TD CLASS="quote">seems like a good canadian tire install </TD></TR></TABLE>

thanks for the constructive input.

 

my exedy twin disk has been fine. my break in consisted of putting it on the dyno, then going to the track haha. my exedy hyper single last year....i put it in the car...drove it around town for 2 days....took it to the track....and it wouldnt hold 400 horsepower. slipped all the way down the track. after using a twin disk i'll never go back to a single disk.

 

Did you guys have to put in a stop behind the clutch pedal so that it didnt go all the way to the floor board . I was told you could damage the clutch by going all the way to floor.. this is my first twin disk..

 

with a twin disk, the pedel should not go to the floor... hell, i cant even get my pedel pushed in half way...

 

Not sure if this is your problem or not but...

on the Exedy twin disk, the disk that says FW isnt the side of that disk that "faces" the flywheel. That is just the disk that sits on the flywheel side. The other disk sits on the other side of the middle ring, being closer to the p/plate. Which way each disk sits in its respective locations is pretty straightforward to determine, they only seat nicely one way. Lastly, Exedy indexes everything with some white or blue paint.

Hope this helps
-bill

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AutoLab &raquo;</TD></TR><TR><TD CLASS="quote">Not sure if this is your problem or not but...

on the Exedy twin disk, the disk that says FW isnt the side of that disk that "faces" the flywheel. That is just the disk that sits on the flywheel side. The other disk sits on the other side of the middle ring, being closer to the p/plate. Which way each disk sits in its respective locations is pretty straightforward to determine, they only seat nicely one way. Lastly, Exedy indexes everything with some white or blue paint.

Hope this helps
-bill</TD></TR></TABLE>

Very true,
we found this out when installing our clutch, the flywheel disk should face with the rivits out (twards pressure plate), otherwise the stack wont sit properly...

Mike...

 

sounds exactly like the problem im having so i thought i would bump to see if anyone else experience this?

 

Mike go back to work lol sorry man want to help but we are moving just got a new house

 

Qouting Exedy
(If you dont break in the clutch properly im sorry to say but your warrenty is voided emediatly)How the expletive do you suppose to break in a clutch on a drag car they want some drawn out 500 mile break in and some other bullshit anyways had to throw that in cause i got done over by them but it was turned into another excuse to much power for the clutch crap

So please break them in so you want have to go threw the **** i did with exedy
just my 2cents

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Modify &raquo;</TD></TR><TR><TD CLASS="quote">

a lot of heat


if anyone as pic or the crrect order for disc let me know </TD></TR></TABLE>

A lot of heat because the clutch was slipping

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BENJRACING &raquo;</TD></TR><TR><TD CLASS="quote">Mike go back to work lol sorry man want to help but we are moving just got a new house </TD></TR></TABLE>

LOL my job is to surf HT... j/p... i should get my butt back inside the lab to check on things... well... na... too tired...

Mike...

 

mine was broken in properly but still slipping, car is on a dynodynamics making 400hp and 250ft lbs and so i highly doubt its tire spin. We'll see what exedy has to say about it. For the money i spent on this and not even ran it once down the track... I hope they take care of me.

 

I'd either put a stop on the floor or leave pressure out of the pedal..I ran a clutchmasters twin disk a year ago and never put a stop in which caused crankwalk bad...End up having to rebuild the whole bottom end because of not having a stop installed..

 

damn i will keep that in mind thanks

 

looks like you cant rebuild that thing unless you get another flywheel kinda sux

 

I might have found the problem guys, my master cylinder was kinda leaking on the inside of the car. When i pulled the car off the dyno today i noticed the free play that i had before came back. I also kinda noticed on the dyno that it got real stiff and had no play at all. Anyways i guess ill find out soon. I called the Exedy tech and he was a jap haha pretty hard to understand but real nice guy. Thanks to Cortney Green, Boostfed Terry, and Vaporboy for trying to help me out on this issue.


Modified by fullblown at 5:42 PM 3/24/2006