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Quote:

Originally Posted by carlintexas

madmods - I have the Spec stage 2+ with Fidanza flywheel and have had what is called harmonic vibration since it was installed. It's very noticeable and will drive you nuts. You feel it most letting off at around 3k. I called Spec and was told 'it's normal to have harmonic vibs. with a billet flywheel'. The answer was kind of a 'get used to it' thing.

Randy and Dave at DDM have been driving mine and they feel the vib as well - and don't like it. Randy is planning on installing a Spec stage 2+ in his car but not the Fidanza flywheel. When he gets it installed - if he has no vibration - then the flywheel is the problem and I'll have mine pulled and re-install the stock flywheel.

I even bought a GXP clutch to have 'standing by' to use if I still have a vibration after changing the flywheel out. I don't know if it will fit, but I'll give it a shot before going back to stock or spending the cash for another aftermarket unit.

I saw yours today at the shop, recognized it right off, nice, very nice

That get used to it comment by Spec would set me off

You are in good hands at DDM

Harmonics in a flywheel are bad, very bad

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	duckSol Member Join Date: Apr 2007 Location: In Black Beard the Pirates Back Yard	Quote: Originally Posted by carlintexas madmods - I have the Spec stage 2+ with Fidanza flywheel and have had what is called harmonic vibration since it was installed. It's very noticeable and will drive you nuts. You feel it most letting off at around 3k. I called Spec and was told 'it's normal to have harmonic vibs. with a billet flywheel'. The answer was kind of a 'get used to it' thing. Randy and Dave at DDM have been driving mine and they feel the vib as well - and don't like it. Randy is planning on installing a Spec stage 2+ in his car but not the Fidanza flywheel. When he gets it installed - if he has no vibration - then the flywheel is the problem and I'll have mine pulled and re-install the stock flywheel. I even bought a GXP clutch to have 'standing by' to use if I still have a vibration after changing the flywheel out. I don't know if it will fit, but I'll give it a shot before going back to stock or spending the cash for another aftermarket unit. I saw yours today at the shop, recognized it right off, nice, very nice That get used to it comment by Spec would set me off You are in good hands at DDM Harmonics in a flywheel are bad, very bad __________________ Transformer SLY FOUNDING MEMBER NASSOA Where SLY? SLY Tiki Man miss SLY duckSol's Mods "It's a Family Affair" Sly & the Family Stone "Okolemaluna"