Solid vs. Dual Mass Flywheel
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Elder User
Joined: Dec 2011
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Solid vs. Dual Mass Flywheel
My clutch is going bad on my 7.3 IDI ZF5. I'd like to get your opinions on whether or not its worth it to replace my stock DMF with a Luk SMF kit. I dont want to have to rebuild the transmission from the extra strain put on it through the SMF, but I also don't mind some gear roll noise if that's the extent of the negative effects.
From what it looks like I'll be spending about the same for either the Luk kit or a new DMF. But having the "reliability" of a longer lasting clutch would be nice
Thanks
From what it looks like I'll be spending about the same for either the Luk kit or a new DMF. But having the "reliability" of a longer lasting clutch would be nice
Thanks
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
It is a no brainer. SMF
Guys are putting 500hp+ thru these trans with Zero problems, neither will you
I also recommend a Valair 13" HD Organic clutch
One step up from stock and will handle most mods short of stage one injectors
Guys are putting 500hp+ thru these trans with Zero problems, neither will you
I also recommend a Valair 13" HD Organic clutch
One step up from stock and will handle most mods short of stage one injectors
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Nope. Anything hydraulic related to the clutch is external of the bell housing so it can be done at any time down the road
Posting Guru
Joined: May 2012
Posts: 1,271
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From: Franklin, IN
Oops, I thought the diesel ZF5s had the internal slaves.
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Elder User
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Good to know, now I'm down to ordering the kit. Ebay? or should I order from the Luk website?
Thanks
Thanks
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Elder User
Joined: Dec 2011
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Edit: I found this kit, is this a SMF conversion?
Valair 12.25" x 1.25" Stock Organic Replacement Clutch 88-93 Ford IDI
The 13" is listed for PSD
Valair 12.25" x 1.25" Stock Organic Replacement Clutch 88-93 Ford IDI
The 13" is listed for PSD
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Diesel and big block are external
Sorry. Missed where it was for a 93 IDI. Thought it was for a 95 PSD
here is the clutches available for the IDI
I deal direct with valiar and cut out the middle man
Performance Clutch - Ford PowerStroke
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
If so, it can be a couple things.
1. the clutch is bad and no longer grabs the flywheel or pressure plate
2. There is trash(vermin media) in the pressure plate not allowing it to squeeze the clutch disc
3. the hydraulics are not releasing and again not letting the pressure plate squeeze the clutch disk.
4. there wis contaminants on the disc letting it slip.
Or is the transmission hard to get in gear?
Again a couple of scenarios..
1. Hydraulics are not moving far enough to disengage the clutch
2.it is disengaging but the syncros are bad not allowing it in gear
3. bent forks in the trans not allowing to get in gear
4 the linkage from the pedal is worn enough to not allow the correct travel to push the master cyl and you can't get it in gear