naishou

I bled my S2000 clutch alone no problem. I guess there's not much volume in the reservoir so you have to be careful, but one of those bleeding aids with the valve in it that you can get from K-Mart makes it easy.

DavidM

I confess though that after reading what is involved in a clutch replacement this is one job I'll leave to the experts.

Doing a totally 'custom, one off' job for your car is risky. I know 'cos that's what I had in the S2000, and noone but me could drive the car. Not only that, but unless you were 100% perfect with your rev-matching, you'd get compression lock-up on the 2nd to 3rd change (and it would even jerk the 5th to 6th change). So, you could be lucky and get one that is to your liking, but do you want to take the risk?

I'd call 'Race Brakes' as they make tailor made cluthed and have already made a few for the S2000. Also, they'll want 'only' about $1000 for the parts and labor.

naishou

Compression lockup in third gear? On an upchange? How is that possible? For the record compression lockup is where your rear wheels lock (skid). It normally happens on downchanges to low gears while already under brakes and releasing the clutch too fast without enough revs up. How it could happen on an upchange baffles me. Normally the engine speed would be too high rather than too low, unless you're changing really slowly.

AusS2000

Assuming I need a new clutch I wil also contact Race Brakes. I'm very happy with their brake pad efforts and I've spoken to them about clutches before.

Only problem is that hthey are in Wetherill Park and would need the car for at least a day. God knows what I would do in Wetherill Park for a day, or worse still, how I would get to and fro over a couple of days.

naishou

Have you heard of trains Aus?

AusS2000

Yes, but Mosman hasn't.

AusS2000

But I hear they handle like they are on rails.

DavidM

Compression lockup in third gear? On an upchange? How is that possible?

Yep, on the upchange. It would happen if you change gears too slowly, or too fast. Either way, when the revs were not perfect then there was a risk of it. Though, normally you'd just get a big jolt as you are usually pretty close, but if you're a bit of you'd get more of a 'chirp' where the wheels lock up for a fraction of a second.

For the record compression lockup is where your rear wheels lock (skid). It normally happens on downchanges to low gears while already under brakes and releasing the clutch too fast without enough revs up.

Yep, that's correct.

How it could happen on an upchange baffles me. Normally the engine speed would be too high rather than too low, unless you're changing really slowly.

The clutch had no give at all. It was either ON or OFF ... not really a problem once on the move and if you're good at rev-mathing (in both direction), but getting the car off the line was a very 'interesting' excercise.

AusS2000

Is that because the coefficient of friction in the material in the friction plate was so high, or because it didn't have shock springs?

Any road clutch still needs good shock springs and I guess some give for my 'granny shifting'.

naishou

Wynyard has, and Mosman has buses. Methinks it's been a while since someone has used public transport. Come on Aus, overcome that phobia.