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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: claude on July 20, 2020, 12:12:05 pm

Title: Clutch Slave Cylinder Repeated Failure
Post by: claude on July 20, 2020, 12:12:05 pm

1985 K20 that I rebuilt 355 engine about 3 years ago & put on 1&5/8 Hooker headers. I am on my 3rd clutch slave cylinder. I am sure that the cause of problem is the driver side header that is too close to the line from the master cylinder(about one inch) and to the slave cylinder(1.5”). When I installed the new slave cylinder the Dot 3 fluid was almost black. I purchased some Titanium heat wrap and completely wrapped slave cylinder housing. Tried to wrap lower part of headers that is close to slave cylinder and fluid tubing but found it impossible to do with headers installed. What have fellow members done to solve this problem?

Title: Re: Clutch Slave Cylinder Repeated Failure
Post by: Shifty on July 20, 2020, 12:24:22 pm

Anyway to fab-up a sheet of aluminum to shield the slave cylinder? 

Title: Re: Clutch Slave Cylinder Repeated Failure
Post by: VileZambonie on July 20, 2020, 01:01:00 pm

Reroute with a braided hose

https://www.summitracing.com/parts/afc-40280

Title: Re: Clutch Slave Cylinder Repeated Failure
Post by: MIKE S on July 20, 2020, 03:10:04 pm

When these trucks were new at best I could only get them to last 1-2 years under daily driving farm trucks. I tried aftermarket cast iron and they were no better.

Title: Re: Clutch Slave Cylinder Repeated Failure
Post by: claude on July 21, 2020, 09:41:23 am

Quote from: VileZambonie on July 20, 2020, 01:01:00 pm

Reroute with a braided hose

https://www.summitracing.com/parts/afc-40280

Quote from: Shifty on July 20, 2020, 12:24:22 pm

Anyway to fab-up a sheet of aluminum to shield the slave cylinder? 

Thanks Shifty & VileZambonie. I’m going to both suggestions.