[RV4Flyer]

Curious how important it is if at all to bleed the slave cylinder between each track event. I do my brakes (either a flush or a bleed) between each event but the slave cylinder is a real pain to get to when the Cayman is only up on jack stands. I also saw that there are remote slave cylinder bleeder kits. Wondering if they are worth the trouble of install and expense?

[BillC]

I always bleed my clutch line whenever I bleed my brakes. But, if you use a really good brake fluid (like SRF), and you track fairly often, you can get away with flushing the clutch line every other event, or maybe even every third event. The reason is the clutch line uses the same brake fluid as the brakes, and you can boil the clutch fluid if you're not careful.

[Trak Ratt]

I don't bleed mine but ever couple of years. Usually in conjunction with changing the trans fluid.

That said I always did "flush" the clutch (as appropriate) and brake system of every Porsche we ever bought. Most POs don't and we have usually bought used cars that were several years old. I use at least a quart of regular name brand fluid from the FLAPS for the flushing. Then replace that with what ever high temp track fluid I'm currently using. Only fluid related issue I've ever had was a bad master on L's '87 targa track car. And that's when I started doing the above. 1st flushes usually produce some truly nasty looking fluid too. Yearly ones don't.

I also, immediately change the trans fluid on all, and with the newer water cooled ones flush the cooling system too. Same with DDs and truck except they are every 2 or 3 years. Had a VA inspection station ask about the F-150s "blue" brake fluid once.

My reasoning is that the brake fluid gets hot then cools. The clutch fluid not so much. Heating and cooling is the enemy of brake fluid.

If you do bleed the slave clutch cylinder every time it can hurt. I just don't think it needs to be done that often.

[Nerfbar]

Originally Posted by Trak Ratt

I don't bleed mine but ever couple of years. Usually in conjunction with clutch failure.

FTFY

[Trak Ratt]

^ To funny boy-o! I've never had to replace a clutch with less that 100K on them. Most north of 150.

[Vicegrip]

Bleeding the clutch every event is overkill. Bleeding in general is not what people think. For the most parts it moves water contaminated fluid towards the calipers.

Flush all at proper intervals. IMO If you have to bleed air or gasses from the calipers at or after each event you need to add cooling.

[Intubator]

Slave fluid never gets nearly as hot as the caliper stuff, no boil-no worry. I flush mine every other year. Its still hydoscopic so the every two years is a good idea even if you don't track it.