Spec Flywheel - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 03-28-2012 Thread Starter
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Spec Flywheel

Hi i have bought Spec flywheel and clutch (stage 2)..
Can anyone tell me if this flange is needed.




They are none on the original.

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post #2 of 6 (permalink) Old 03-28-2012
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Quote:
Originally Posted by kepsus View Post
Hi i have bought Spec flywheel and clutch (stage 2)..
Can anyone tell me if this flange is needed.




They are none on the original.

That is a shim that goes under the slave cylinder, Depending on which clutch you are installing, you may need to shim the slave to prevent over-extending the slave which will blow-out the seals.

From from what I've seen most aftermarket clutches require shimming, I know some people don't use a shim and have no issues,, I wasn't one, for my ACT clutch I need to use a .06" (1.5mm) shim, ..

Here's my rather simplistic way to figure if you need to shim,

One, measure the FW thickness of both the OEM and the Spec,

Next, install the clutch on the FW and torque them down to ensure the PP fingers are at their installed height .. While resting on that flat surface, measure the finger height of both clutches and then shim up any difference between ...

Here's RAM's tech write up of determining the slave preload,

Factory Hyd. setup


Good luck ..


.


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post #3 of 6 (permalink) Old 03-28-2012
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The shim is not required if using a Spec flywheel with a Spec clutch kit.

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post #4 of 6 (permalink) Old 03-28-2012 Thread Starter
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First Thank you both, this here is the most friendley forum i have meet so far.

I did buy
1
60023 - SPEC Stage 2+ Clutch (05-10 Mustang GT)

1
60009G05 - SPEC Billet Steel Flywheel (05-10 Mustang GT)

Together sa you mean i should not use the shims?
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post #5 of 6 (permalink) Old 03-28-2012
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Quote:
Originally Posted by kepsus View Post
First Thank you both, this here is the most friendley forum i have meet so far.

I did buy
1
60023 - SPEC Stage 2+ Clutch (05-10 Mustang GT)

1
60009G05 - SPEC Billet Steel Flywheel (05-10 Mustang GT)

Together sa you mean i should not use the shims?
I myself have that same setup. If you look on AM for that flywheel you'll see it installed in my car. My kit for my stage 2+ did not come with a shim for my slave. I have about 5k miles on that setup and I'm finally gonna pull the trans back out and shim it. 1st, 2nd and rev are a pain to get into. Especially if the car is warm. I think the spec material becomes thicker when heated. I've tried afew things to rule this out. Dot 5.1 non silicone brake fluid, stainless steel clutch line and bleeding it a million times.

Way too much to list. I'm broke because of it. Tuned by Blue Collar Performance.
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post #6 of 6 (permalink) Old 03-29-2012 Thread Starter
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ok i did contact spec today, it say it is not needed when i use both they FW and clutch... but think after hear you setup i should mesaure it up.

//Kenneth
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