Rocket Rob

Yes, there should be approx 1" of free play at the top of the pedal travel.

Porsche964FP

Great all sorted then, I've written it all up here https://rennlist.com/forums/964-foru...x-pics-13.html

Rocket Rob

Glad you got it resolved.

Porsche964FP

Hi Rob and all, I call on your help again please.

So the travel is better, but having driven the car a bit more to test it's still from time to time 'dropping'.

A friend with a 964 came over yesterday and pushing his clutch in, in comparison to mine was a joy.

I still find myself lifting the pedal on occasion and the gears are a bit 'sticky' coming out of gear.

My specialist checked the slave & master both are dry... I'm guessing these are the next items to replace none the less?

If so how many hours labour am I looking at to potentially replace both?

I don't have bleeding apparatus and it would be the first time I did the job so better to take it to my indy.... ?

Andy Roe

I had the same issue on my old C4. After they bled the system is was OK. I think with having a C4 you need to use the Hammer to do this (I might be wrong though). My mechanic said that the hydraulic fluid was really bad that came out and even they had problem with doing it!

Rocket Rob

Replacing the clutch slave is not too hard. I would replace it and the associated rubber hose. For your first time doing it, I would estimate 2-4 hours. You have to jack up the rear of the car, remove the left rear wheel, remove the slave and hose, install, then bleed. Replacing the clutch master took me a few hours my first time (only done it once). All in, I would estimate a full Saturday's work. The only special tool you need is the pressure bleeder. In the US, they are about $60, well worth it and very handy for bleeding the brakes too.

How many hours would an indy charge? Not sure but my guess would be 4 hours.

But before you do all of this, have you bleed the clutch? Many times when brakes are bleed, mechanics will forget to bleed the clutch circuit. Bleeding is quick and easy. I would do that first before spending the time and money on replacing the clutch slave and master.

boxsey911

Frank, you can get the eezibleed kit from Halfords. Quite cheap. It uses air pressure from a tyre to bleed the fluid through. Andy is right that the C4 brake system is a bit more involved than a C2 when bleeding but my guess is that only bleeding the slave should be straight forward (no need for a Hammer). Alternatively, ask your indy to bleed the slave - it should take them no more than 15 minutes with the car on a lift (and their expertise).

Porsche964FP

Thanks for the quick responses.

The hammer is a diagnostics tool... will this give me the answer?

What precisely is meant by hydraulic fluid - this is not clutch or brake fluid?

The clutch was bled very recently...

I thought this was a clutch issue?

So there are two separate systems - the slave in the braking system and the master in the clutch system?

Apologies for all the questions, my car mechanical know how is very limited, please bare with me!

Cheers,

Rocket Rob

There are three separate systems using brake fluid on the C4

1) Brakes
2) Hydraulic clutch
3) Center and rear diff locks on the tranny.

In your case, you need to focus on the hydraulic clutch. If you have already bled the clutch then the next step is to replace the clutch slave and associated hose. If that doesn't solve the problem then replace the clutch master. By doing it in this order, you are going in order of likelihood of the problem and also going from least expensive to most.

alexjc4

Hammer not needed to bleed the clutch.

Brake fluid=hydraulic fluid in this context, all the fluid for three systems above comes from the same reservoir.

Bleeding is easy in theory but time consuming. I have an ezi bleed you can borrow if you want.

Only two bolts and a fluid connection for slave and master cyl. Master you could do easy yourself. Slave and bleeding really needs access from underneath, come and pop it on my lift if you like.

That said Gt one would make very short work of both.

alexjc4

Btw that aussie chap's thread has a good desc of the bleed proccess.

Porsche964FP

Thanks gentlemen.


Alex, thank you for the kind offer. I'd love your help but I wouldn't want to inconvenience you?

GTOne have and quoted me £ 220 maximum ( with probably a reduction by using aftermarket parts ) including, the slave, new hose, fluid and labour....

Peter was saying that 9 times out of 10 it's the slave, and since there are no fluids leaking. It's probably the slave sucking in air...

alexjc4

That price seems pretty reasonable, say 20 for the hose, 90 for the slave, 10 for fluid and a couple of hours labour. So depending on how you value your time that may be an o brainer. Personally I see every job I get someone else to do as a missed opportunity to play with my toolbox, but I may be a bit odd in that respect.

Interesting they say its sucking air that would make sense, mine gets better when bled but worse again soon enough.

If you have nothing better to do for an afternoon, i am more than happy to help, just another excuse to get dirty fingernails.

boxsey911

£220 sounds reasonable to me too. I had this done and the starter motor changed during my rebuild....seeing as they were 'in there'.

Porsche964FP

Yup, please can I take you up on the offer! I promise to bring beers, food and any other requests! Or at least buy you a steak at the local pub! Let me know when your available.

Cheers Alex

I'm always so happy to get my hands dirty and learn more about the 964 - saving money is the bonus!