blown 87

Some folks have talked about having to modify the stroke length of the new master cylinder.

I plan to do my 5 speed conversion as soon as funding allows, still need Superbearings, a shift boot and **** and a few minor parts.

I have not taken my master cylinder from the 80 apart yet to see if it can be rebuilt or not, so I may have a choice to make.

dprantl

Ok, thanks for that Jim. Now... how do you pull out the rod? I had no problem doing this on my old '86. The GT rod seems to be firmly held in place and I'm afraid if I pull too hard it will pull the internals out with it. I was looking at the exploded diagram of it in the WSM and it seems there is a "retaining ring" that holds the rod to the piston. Do you stick something in there to hold the piston and just yank the rod out?

Dan
'91 928GT S/C 475hp/460lb.ft

Mrmerlin

Dan to remove the rod from the slave spray some silicone into the boot/rod area on the outside of the slave, the retaining ring seals the outer boot to the slave so dirt cant get into the cylinder.
Once this is done firmly grasp the rod and while holding the rubber boot towards the cylinder, pull the rod out

dprantl

Wow, so I took the slave rod out after cutting 15mm off it from before, and it was still 155mm long! So it turns out this slave cylinder rod was ~170mm long originally. I proceeded to cut another 16.5mm or so from it to make it 138.5mm long, buttoned it back up and no more clutch slip Thanks Jim, Greg and Stan!

For future reference, I had to cut 31.5mm in total.

Dan
'91 928GT S/C 475hp/460lb.ft

blown 87

Just make sure that the release fork has a small bit of play in it at rest, or you will be putting a release bearing in it soon.

Glad you got it going.

nord

Hi!

I got a question..
On a s4 the slave rod got a groove in one end.
Which way do the end with the groove go..?
In the slave or towards the clutch arm...?