Working on it. The plate plan is done. What I am trying to do over the next 10 days...among other projects...is to get thickness and spacing of the cylinder right so all anyone has to to is but a cylinder...make the plate and hook it up.gearheadgreg wrote: ↑Mon Apr 20, 2020 10:38 amraygreenwood wrote: ↑Sun Apr 05, 2020 8:10 pm
Greg...let me know when you get to to the clutch slave. Is this the late 44.5mm FAG slave or the early smaller slave?
About 5 months ago I was about to rebuild 10 of them. I have a source for a serviceable EPDM seal....just have to order too many. I was about to nickel plate the 10 I have back to factory spec after honing clean (which would make them last forever)...and cast a new high temp silicone boot....and sell them off at cost just so I have spares.
However....I have too many other parts that REALLY need electroless nickel to waste on these. They would still be roughly the same cylinder so not ideal by any means.
I have found that the slave cylinder from my 2012 Golf....would work no problem with a simple adapter plate and a modified pushrod. These run about $65 to $95-ish and ran on mk 4 through probably the current mk7. I got 120k miles from mine on my Golf. You can get them anywhere.
I have to calibrate the throw of the stock cylinder and set the shim for these. Its one of my back burner projects but if you need the data I can move it up front. I figure $10 worth of metal and studs and about an hour on a drill press ...and you can have an easily replaceable slave cylinder with a modern bayonet style fitting. Let me know if you need the info and pattern for the adapter plate.
The smaller slave diameter would also REALLY improve pedal feel. Ray
I missed this from you, Ray. I've already got the cylinder. It's an NOS large unit, which I know will be hit or miss because of the age of the seals.
If it doesn't work or last, I'd love that adapter plate info for the later Golf one.
The gist is that the slave cylinder diameter is roughly....and I will measure mine...but its listed in most places as 19.05mm. That will give quite a bit more normal pedal feel. The stock early 411 clutch slave was 22.25 with the same 19mm X 30mm master cylinder....but a different pivot point ratio. I have heard it feels better.
The late 411 and all 412 used the 44.5mm slave with the same 19mm 30mm strke master cylinder. While super light...no pedal effort....its also hard to get used to. No break point is able to be felt.
This slave will be a bit harder to push....but can also "over reach" or over lift. That can be fixed with spacing.....or if you want a very short throw pedal....you can put a stop on the pedal.
I have to do a basic rebuild on my clutch master cylinder....then pull the spare trans with a case and fly wheel attached out next to the car and run a metal tube so I can experiment for an hour or two with a stack of shims.