Other Opinions/suggestions....

[Ant97GTR]

Hey guys,

I recently had a new clutch put in my R33 GTR. Awesome clutch and great to use except I felt like I was learning to drive all over again when I picked the car up

This wasn't helped by the fact that the installer believes that now there is a new clutch the master/slave cylinders have given up the ghost and is sucking air into the system. Basically if you leave the car for a bit the clutch hits the floor when you first get in and you have to pump it a few times to get the feel back (ie fill the system with fluid again).

All of this makes sense, the only thing that makes me think something else might have been missed is the fact that this clutch is lighter to use than the one that was in there and up until now I have never had issues. This kinda negates the reason that the new clutch put extra 'strain' on the system and the master/slave have failed.

So besides a new master/slave is there anything else I should look at?

[madbung]

Sucking in air....wouldn't it be pushing out fluid instead?

If the sytem is sealed (good) and bled correctly, it can't really suck anything in without first pushing something out.

Check for fluid leaks, if none re-bleed.

[Ant97GTR]

Ok fair point but the way I understand it is that there is a reservoir of fluid (master) when you depress the clutch the system sucks fluid from this to operate and then returns it once the clutch is released. So somewhere there is a broken seal letting air into the system but not bad enough that there is a noticable fluid leak.

Also the system was bled and then was re bled when this problem surfaced.

[madbung]

I hear what your saying Ant, but in a hydraulic system it is sealed...no air should ever be in it if it's bled correctly.

If the pedal's hitting the floor thats a fair whack of air in there, if the master or slave has colapsed it wouldn't work at all and as I said if air is being introduced the same amount of fluid must be expelled.

I'd try a gravity bleed on it before I went handing out any cash.

Edited June 19, 2008 by madbung

[Ant97GTR]

Cheers....I will give that a go.

At this stage I'm thinking that there is a small leak which say left overnight drains the system...maybe the pressure created in the system when using the clutch is closing the leak or something like that. Anyway I will have a close look to see if I can spot a leak, re bleed and see what happens.