Forte Hydraulic Clutch Question

[cv2065]

When I installed this the last time, I cut the slave cylinder rod about 1-1/8" before mounting and that worked great, but I know that won't apply to this build. I just can't remember where I measured that from and didn't note it on my build thread.

I 'think' I bottomed out the pushrod w/cap into the slave cylinder and then measured to flush on the cylinder with TOB against clutch, cut, then cut another 1/8" for TOB clearance. So then at full extension, the piston will have plenty of runway. Can someone confirm?

Thanks.

[J R Jones]

I do not understand your terminology. The push rod length is a simple measurement between the clutch pedal clevis hole and the seat in the master cylinder piston. The rod should have no preload on the piston when the clutch is engaged (pedal up), just a little clearance.
jim

[cv2065]

I do not understand your terminology. The push rod length is a simple measurement between the clutch pedal clevis hole and the seat in the master cylinder piston. The rod should have no preload on the piston when the clutch is engaged (pedal up), just a little clearance.
jim

I'm talking about the slave cylinder, not the MC.

[J R Jones]

I have utilized engineered assemblies in the past, adjust and go. In those systems the link rod was thread adjustable with a jamb nut. The rod length was adjusted to "snug", bottoming the TOB, then backed off to provide clearance. It you do not have an adjustable link rod I would make one to compensate for clutch wear.
jim

[cv2065]

I have utilized engineered assemblies in the past, adjust and go. In those systems the link rod was thread adjustable with a jamb nut. The rod length was adjusted to "snug", bottoming the TOB, then backed off to provide clearance. It you do not have an adjustable link rod I would make one to compensate for clutch wear.
jim

Thanks Jim. That's what I did. Bottomed it out, cut and then backed off by 3/16" for clearance.

[J R Jones]

CV 3/16 free-play sounds like a lot in my experience. I have not measured free play but 0.060 would be my guess.
Whatever free-play you use, if it is too much, the clutch friction plate will drag. A test would be engine off, trans in gear, clutch pedal in, and see if the car will roll.
jim

[cv2065]

CV 3/16 free-play sounds like a lot in my experience. I have not measured free play but 0.060 would be my guess.
Whatever free-play you use, if it is too much, the clutch friction plate will drag. A test would be engine off, trans in gear, clutch pedal in, and see if the car will roll.
jim

Thanks Jim. That was the recommendation from Mike Forte. I ran 1/8” last time but measured out to Mike’s recommendation this time around, but I’ll check it out once the time comes. Thanks again!

[dbo_texas]

Is there a good write-up explaining this process? I also have the hydraulic clutch setup from Forte and this is on my to-do list to check this. Not sure if it was done by Forte or the original builder so just want to know what the correct process is to check/verify this. Any tips?

[cv2065]

Is there a good write-up explaining this process? I also have the hydraulic clutch setup from Forte and this is on my to-do list to check this. Not sure if it was done by Forte or the original builder so just want to know what the correct process is to check/verify this. Any tips?

There are bits and pieces here and there but not really. I plan to detail it out in my build thread this week.

[dbo_texas]

There are bits and pieces here and there but not really. I plan to detail it out in my build thread this week.

Awesome - I'll keep an eye out for the details.