Clutch problems (1 Viewer)

Joined
Oct 2, 2020
Messages
1
Location
Utah
I have a 1965 fj40 running a chev 350 advanced adapters bell housing and Toyota 5 speed tranny audio using fj40 master and slave. Clutch works great when truck is cold but when starts heating up the clutch pedal builds up pressure. Enough pressure that it almost engages the clutch I have replaced every component a couple of times and it still does it any suggestions would be great thanks.
 
Joined
Dec 13, 2012
Messages
1,218
Location
KY
I used to have a heat issue with the steel clutch line running down to the slave cylinder. It actually boiled the fluid to the point that the clutch would not work. This was because line ran near the rear dump exhaust on my 350 SBC. My solution at the time was to swap out regular brake fluid in the clutch with silicone brake fluid and insulation wrap. It worked as the silicone fluid had a higher boiling point.

When I switched over to a set of rams horn manifolds years later there was less heat as the pipe was now further away.
 
Joined
Dec 15, 2019
Messages
69
Location
Colville Wa.
Try adjusting some slack into the clutch pedal push rod. If there isnt enough free play the master cylinder will gradually disengage the clutch while driving.
 

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