solid flywheel or not soild ?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
I think the dual mass flywheel was in Powerstrokes only. It has springs in the flywheel to help absorb the power jolt from all the torque of the powerstroke. Luk makes a solid flywheel clutch that replaces the dual mass flywheel which is very expensive and does not hold up very well if you are hauling and towing a lot. I can not remember which driveline bearing seems to take the brunt of the shock load, but that was why they had dual mass flywheels. Most people I have talked to had nothing good to say about them.
Senior User
Joined: Oct 2003
Posts: 409
Likes: 0
From: New York
they also sued teh dual mass to queit the tranny and as far as i no they also used them on the 7.3 idi motor. when i put my 5 speed in my 6.9 idi i used the soldi flywheel and got a clucth from a dual mass and made it fit. it works great but its really noise when its idling. give it some throttle wether yar in gear or not and it quiets rite down.
Posting Guru
Joined: Oct 2003
Posts: 2,438
Likes: 0
From: Monroe, WA
All of the 7.3 sticks I have seen have the dampened flywheel. I guess they thought it would be stronger than the dampening ring in the clutch disc. Only problem is the clutch costs less than a new flywheel.
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Posting Guru
Joined: Jul 2003
Posts: 1,028
Likes: 1
From: San Antonio
I just replaced mine 12 "dual mass flywheel $700 dollars ;high performance 12" kevlar clutch, throw out bearing alinemnt tool ,new flywheel bolts $344.39
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Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
I replaced a dual mass flywheel with a solid on a friend's 94 7.3 turbo, and it seemed to have more torque after doing so. We got a kit from LuK for around $400, with the pressure plate and disc. His father was real impressed with it, and he had been the one to drive it most.
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