Clutch
Melting Slicks
Joined: Sep 2002
Posts: 3,311
Likes: 8
From: Plano Texas
St. Jude Donor '12-'13-'14-'15-'16-'17
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
A few years ago, it was reported that CLUTCH DUST gets "INTO THE CLUTCH HYDRAULIC SYSTEM" 
WTF?? How can that happen????
Its a DAMN SEALED SYSTEM!
Well,,,,,,,,,,,,,, after doubting that theory, My 02 ZO6 clutch started sticking to the floor after I did a heads / cam / FAST90 Horse Power infusion!
I purchased a SPEC Twin disk set up, and ALL NEW Clutch parts to resolve it. New Master Cylinder, Slave, pilot bearing, throw out bearing and added a remote bleeder kit.
I ALWAYS take my old broken / worn out stuff apart to see WHY it fails/wears out.
HOLY CRAP. Sure as hell, the slave cylinder was PACKED with clutch dust slime and the master cylinder had a large amount of the same clutch dust slime in it. Its a nasty gritty black slime.
The Slave Cylinder hydraulic piston seal does a great job keeping the hydraulic fluid inside the system BUT, it does a VERY POOR JOB keeping the clutch disk cast off dust out of the system.
When the piston moves IN & OUT over the slave cylinder sealing surface, it moves over any of the micro fine dust particles on the slave cylinder shaft and the seal does NOT keep it out of the system.
If you are NOT religiously flushing the clutch hydraulic system, its going to get contaminated dust and full of slime.
Our clutch hydraulic system has OEM engineered restrictions in the system to PREVENT ABUSE. If you side step the clutch peddle, the restrictions help prevent violent clutch engagement and drive train damage.
If your clutch fluid is contaminated and 3 times thicker than clean fluid, its NOT going to work like a clutch should.
I had to see it to believe it.
Bill
WTF?? How can that happen????
Its a DAMN SEALED SYSTEM!Well,,,,,,,,,,,,,, after doubting that theory, My 02 ZO6 clutch started sticking to the floor after I did a heads / cam / FAST90 Horse Power infusion!
I purchased a SPEC Twin disk set up, and ALL NEW Clutch parts to resolve it. New Master Cylinder, Slave, pilot bearing, throw out bearing and added a remote bleeder kit.
I ALWAYS take my old broken / worn out stuff apart to see WHY it fails/wears out.
HOLY CRAP. Sure as hell, the slave cylinder was PACKED with clutch dust slime and the master cylinder had a large amount of the same clutch dust slime in it. Its a nasty gritty black slime.
The Slave Cylinder hydraulic piston seal does a great job keeping the hydraulic fluid inside the system BUT, it does a VERY POOR JOB keeping the clutch disk cast off dust out of the system.
When the piston moves IN & OUT over the slave cylinder sealing surface, it moves over any of the micro fine dust particles on the slave cylinder shaft and the seal does NOT keep it out of the system.
If you are NOT religiously flushing the clutch hydraulic system, its going to get contaminated dust and full of slime.
Our clutch hydraulic system has OEM engineered restrictions in the system to PREVENT ABUSE. If you side step the clutch peddle, the restrictions help prevent violent clutch engagement and drive train damage.
If your clutch fluid is contaminated and 3 times thicker than clean fluid, its NOT going to work like a clutch should.
I had to see it to believe it.
Bill
Melting Slicks
Joined: Jun 2002
Posts: 2,591
Likes: 144
From: Mobile al
Because people never service the clutch fluid, you might as well start prepping for a clutch replacement with hydraulics. Flushing it good 5-6 times will help it a while.
FYI Autozone sells the factory replacement Valeo clutch for about $450 with the flywheel.
I change my fluid every time I change the oil, suck it out with a turkey baster and pour in new.
FYI Autozone sells the factory replacement Valeo clutch for about $450 with the flywheel.
I change my fluid every time I change the oil, suck it out with a turkey baster and pour in new.
Last edited by FASTFATBOY; Jun 4, 2016 at 04:41 PM.
