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SVT Shelby GT500
What a difference a clutch master can make!
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<blockquote data-quote="RedVenom48" data-source="post: 15707226" data-attributes="member: 166576"><p>[USER=161356]@ShelbyGT5HUN[/USER] Not necessarily. The clutch master uses hydraulic principles to do its work. So, if the clutch master can generate say 15 psi of pressure for every square inch on its piston and the volume pushed through, the slave cylinder will be able to use that same PSI per square inch and volume spread over a larger area. Which is why the slave is so much bigger than the master on our cars.</p><p></p><p>I think what really took out the master was two things:</p><p></p><p>1. The actual materials used to make our masters. Ford uses a plastic housing and I believe a metal piston with a cup seal. Over time abusive use of the clutch could cause wear on the plastic "bore" of the housing. Hell, Id even say normal use will do it, though at a later date and higher mileage for failure. Also, see #2:</p><p></p><p>2. The bleed procedure on the hydraulic system is a joke. No bleeder at the slave means pumping the master several hundred times for a pedal. I had to change my clutch and slave at separate times. Also, had a leak from being an idiot and not replacing my o rings with fresh ones when I removed the braided line.</p><p></p><p>That was a TON of pumping to get air out of the entire clutch hydraulic system. I have to imagine pumping a dry master a few THOUSAND times over the last year wore it out some. Id sure love to know what the guys at the Ford shop do to bleed these things.</p><p></p><p>Ryan, at RJM Performance had a thread here earlier in the year about a high performance upgraded all metal clutch master he was developing using his own GT500 for the test mule. He's been VERY successful with the 370Z crowd. I emailed him and hes got some working production plans for our GT500s. Hes been super busy with 370Z orders this summer, but he tells me he can make a master if your interested. email him for more info. Great guy, very detailed. If I didnt have my car under ext warranty and just bought my slicks, skinnies and front skinny wheels I would have bought one of his units.</p><p></p><p><a href="mailto:ryan@rjmperformance.com">ryan@rjmperformance.com</a></p></blockquote><p></p>
[QUOTE="RedVenom48, post: 15707226, member: 166576"] [USER=161356]@ShelbyGT5HUN[/USER] Not necessarily. The clutch master uses hydraulic principles to do its work. So, if the clutch master can generate say 15 psi of pressure for every square inch on its piston and the volume pushed through, the slave cylinder will be able to use that same PSI per square inch and volume spread over a larger area. Which is why the slave is so much bigger than the master on our cars. I think what really took out the master was two things: 1. The actual materials used to make our masters. Ford uses a plastic housing and I believe a metal piston with a cup seal. Over time abusive use of the clutch could cause wear on the plastic "bore" of the housing. Hell, Id even say normal use will do it, though at a later date and higher mileage for failure. Also, see #2: 2. The bleed procedure on the hydraulic system is a joke. No bleeder at the slave means pumping the master several hundred times for a pedal. I had to change my clutch and slave at separate times. Also, had a leak from being an idiot and not replacing my o rings with fresh ones when I removed the braided line. That was a TON of pumping to get air out of the entire clutch hydraulic system. I have to imagine pumping a dry master a few THOUSAND times over the last year wore it out some. Id sure love to know what the guys at the Ford shop do to bleed these things. Ryan, at RJM Performance had a thread here earlier in the year about a high performance upgraded all metal clutch master he was developing using his own GT500 for the test mule. He's been VERY successful with the 370Z crowd. I emailed him and hes got some working production plans for our GT500s. Hes been super busy with 370Z orders this summer, but he tells me he can make a master if your interested. email him for more info. Great guy, very detailed. If I didnt have my car under ext warranty and just bought my slicks, skinnies and front skinny wheels I would have bought one of his units. [EMAIL]ryan@rjmperformance.com[/EMAIL] [/QUOTE]
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What a difference a clutch master can make!
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