zf5 swap
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zf5 swap
So I want to do a ZF5 swap into my 95 psd. I have heard a lot about the 5 speed and I have been told that they aren't that great. What are the common problems with these tranny's and how can I fix them before they go wrong. Also, what does doing the swap require? Is my transfer case fine where it is, is everything just going to bolt right up? Thanks in advance!
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Lead Driver
Joined: Oct 2003
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From: Madison, WI
The only "common problems" with the tranny aren't really with the tranny. The clutch hydraulics are wimpy, and there's a cr@ppy plastic bushing on the master cylinder pushrod that fails. And from the factory, they shipped with a dual-mass flywheel that, if it fails catastrophically, can grenade the tranny case. But with a transplant, you can of course avoid both these issues. Otherwise, the tranny itself is pretty bulletproof.
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From: america
The only "common problems" with the tranny aren't really with the tranny. The clutch hydraulics are wimpy, and there's a cr@ppy plastic bushing on the master cylinder pushrod that fails. And from the factory, they shipped with a dual-mass flywheel that, if it fails catastrophically, can grenade the tranny case. But with a transplant, you can of course avoid both these issues. Otherwise, the tranny itself is pretty bulletproof.
Lead Driver
Joined: Oct 2003
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From: Madison, WI
I haven't read of the weak input shaft issues here or on the other sites, but then, they might be posted more on the performance/aftermarket threads. So if the OP anticipates any "spirited" driving, more research would def. be in order. And ZF didn't make the clutch hydraulics or the flywheel.
Cargo Master
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I don't think a tranny with a reputation for a weak input shaft can be considered "bulletproof"... and the way this one is built, I'm not willing to excuse any part of the shifting mechanism. IMO (assuming we are talking about the M5OD), this is a POS. putting the ZF in is a good fix; but i'm wondering whether putting the factory auto in might not be an easier swap, especially with a floor shifter. what has to be done about the computer and wiring harness to make that work?
Post Fiend
Joined: Dec 2009
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From: Livoina,La
All PSD come with a ZF5 in the OBS and ZF6 in the SD there are guys here 450-525hp on stock ZF so how is it weak?
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Cargo Master
Joined: Feb 2010
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From: College Station, TX
I don't think a tranny with a reputation for a weak input shaft can be considered "bulletproof"... and the way this one is built, I'm not willing to excuse any part of the shifting mechanism. IMO (assuming we are talking about the M5OD), this is a POS. putting the ZF in is a good fix; but i'm wondering whether putting the factory auto in might not be an easier swap, especially with a floor shifter.
Originally Posted by joethef150guy
what has to be done about the computer and wiring harness to make that work?
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Junior User
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From: america
the OP mentioned the 5 SPD; I was mentioning it to make clear which one I was talking about - it occurred to me after i brought it up that i did not know for sure it was the one he was talking about.
Junior User
Joined: Mar 2010
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From: america
I haven't read of the weak input shaft issues here or on the other sites, but then, they might be posted more on the performance/aftermarket threads. So if the OP anticipates any "spirited" driving, more research would def. be in order. And ZF didn't make the clutch hydraulics or the flywheel.
I found the references to the weak input shaft in several places when i starting trying to find out what was going on with my trans. apparently the mazda trans has a rep for that problem, among others.
ADMINISTRATOR - might be best to delete all posts referring to the M5OD, it seems to be confusing.
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