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What Clutch to go with?


wickedstangs

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Do you mind sharing what the problem with the Spec clutch was?

 

 

I've posted on this before, but the clutch I had installed was the SPEC stage 3+. They also market a stage 3 clutch which is a hockey puck design racing clutch, which, unless you're racing, is not a good choice for street use. My SPEC stage 3+ clutch assembly went "south" after a 1000 miles. When I contacted SPEC about the clutch being "shot" I also sent SPEC photos of the clutch, flywheel and pressure plate. Their customer service rep - Jeremy - said that it looked fine to him and said it wasn't broken in yet. Personally, it's been 20 years since I've installed a clutch, but I know what a fried clutch looks like.

 

As I stated earlier, my SPEC clutch had 1000 miles when removed. Two techs at the Ford dealer where it was removed said it was "shot." Once I determined that my SPEC clutch needed to be replaced, I ordered a Ram twin disc clutch from Lonestar Performance here in Dallas and while there, showed them my SPEC clutch which had been removed at the Ford dealer. They said it was shot also. Lonestar also told me that they will not install a SPEC clutch anymore unless the customer is adamant about having a SPEC clutch in their Shelby or Mustang.

 

While taking with the owner of Lonestar Performance, it was clear that their experience in dealing with Jeremy, the customer service person at SPEC, was basically the same as my experience. Additionally, from what I found on the internet, the same poor customer service I received has been experienced by others as evidenced by several other negative comments that I found posted on other forums. To some it up briefly I found Jeremy from SPEC to be one of the most condescending individuals that I have ever dealt with.

 

I did a lot of research before I installed the Ram twin disc and am happy with this clutch. I do have some "roll over" noise while in neutral - from the transmission gears - due to the reduced weight of the aluminum flywheel - but this is inherent to these type of flywheels. I also had this roller chatter with the SPEC clutch too.

 

As a footnote, the replacement clutch of choice for GT 500's that Lonestar Performance recommends is the twin disc Ram assembly. I'm sure there are other clutch assemblies that work as well, but the Ram seems to be working well for them - and me.

 

If you do an internet search on SPEC, you'll see many unhappy customers, as well as some satisfied customers too. But, if you have a problem with SPEC, be prepared for some aggravation.

 

Here are a few threads on SPEC to get you started. Read thru the posts in each thread.

 

http://legacygt.com/forums/showthread.php/spec-clutch-unanimous-theni-78078.html?amp;&

 

http://www.ls1tech.com/forums/manual-transmission/3085-any-spec-clutch-guys-here.html

 

http://mustangboards.com/general-tech-forum/12535-clutch-shaking.html

 

http://www.bimmerfest.com/forums/showthread.php?t=102945

 

http://mustangforums.com/forum/svt-forums/542938-spec-clutch-problem.html'>http://mustangforums.com/forum/svt-forums/542938-spec-clutch-problem.html'>http://mustangforums.com/forum/svt-forums/542938-spec-clutch-problem.html'>http://mustangforums.com/forum/svt-forums/542938-spec-clutch-problem.html

 

http://mustangforums.com/forum/svt-forums/542938-spec-clutch-problem.html

 

http://www.moddedmustangs.com/forums/99-04/146027-spec-clutch.html

 

http://zilvia.net/f/tech-talk/131576-spec-clutches-they-worth-sh-t.html

 

http://www.gencoupe.com/2-0t/35559-spec-clutch-disengaging-issue.html

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I can't say that prior post if very comforting, I am in the UK and when my clutch failed at sub 5k miles I went for a spec stage three clutch and flywheel. Everything is hunky dory at 1500 miles since install. I can't say if its harder or softer than stock as the previous owner paid for the job to be done as it went during our negotiations. The flywheel was burn blue from the heat so we did both the cltuch and flywheel.

 

Peter

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Spec Twin SS in the GT500's...less pedal effort than stock....handles all the power you can give it, no chatter, no hiss...I have installed over 30 of them in GT500's with no issues....

 

Alex

 

 

Interesting what you said about pedal effort. In talking with one of the big GT500 companies that are always on this site (won't mention which), I was told that regardless of which clutch I wanted to go with, the pedal effort would not change from stock and that it was because the slave cylinder was what controled the pedal pressure. I have posted several times about looking for a clutch with less pedal effort due to a physical problem I have and pretty much got the same answer every time which was there was nothing I could do to get less pedal effort. For those of you who posted that you have changed clutches, did the pedal effort change at all?

 

I believe I saw in a Spec advertisement that they sold an adjustable slave cylinder for the GT500. Anyone ever hear of such an item?

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Interesting what you said about pedal effort. In talking with one of the big GT500 companies that are always on this site (won't mention which), I was told that regardless of which clutch I wanted to go with, the pedal effort would not change from stock and that it was because the slave cylinder was what controled the pedal pressure.

 

 

The pedal effort is directly related to the clamping force of the pressure plate!!!!!! Period Clutch aggressiveness is directly proportional to the clutch disc material and hub design along with the clamp force of the pressure plate buy how it is built.

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The pedal effort is directly related to the clamping force of the pressure plate!!!!!! Period Clutch aggressiveness is directly proportional to the clutch disc material and hub design along with the clamp force of the pressure plate buy how it is built.

 

 

Indeed.... Orange is absolutely right.

 

Whoever told you it had to do with the slave cylinder is quite clueless and I would not allow them to touch your car.

 

P.S.

Just a bit of advice.. take it or not... it's not always a good idea to take the advice of a vendor who is trying to sell you a part. I'm going through a complete motor swap right now on my '06 GT because a vendor told me that doing "X" was "Totally safe" and that they "had done it to hundreds of cars without one issue."

 

Maybe I'll send them the bill to my motor swap and see if they'll pay it :)

 

Just saying... ask around here... ask other guys who actually HAVE the part and (this is important) have it installed and have been using it for a while.

 

I see posts all the time where a guy get some part installed on his car and he says it's the greatest thing in the world and that everyone should go get one... and then three months later he's crying about how this amazing part took a complete dump.

 

Just my .02 ;)

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Interesting what you said about pedal effort. In talking with one of the big GT500 companies that are always on this site (won't mention which), I was told that regardless of which clutch I wanted to go with, the pedal effort would not change from stock and that it was because the slave cylinder was what controled the pedal pressure. I have posted several times about looking for a clutch with less pedal effort due to a physical problem I have and pretty much got the same answer every time which was there was nothing I could do to get less pedal effort. For those of you who posted that you have changed clutches, did the pedal effort change at all?

 

I believe I saw in a Spec advertisement that they sold an adjustable slave cylinder for the GT500. Anyone ever hear of such an item?

 

IF you want a easy clutch to use and smooth as it can be the ford 2010 gt500 is the way to go I have one in the shop now it drives like a dream very little pedal effort and holds good also i'am modding this 2010 to about 700 flywheel hp and 600 torque we will see how it handles the mods over time if it holds up good it will be my next clutch in my 805 hp gt500 428cj
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