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Rear end/halfshaft compatibilty

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Old 12-02-04, 09:26 AM
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Rear end/halfshaft compatibilty

I've got an S5 GTU can I do a direct swap for the S5 n/a LSD rear end? What about an S4 LSD rear? Do I need to change halfshafts for any of those swaps?

Will all n/a rear ends swap without having to change halfshafts or is it all s4 n/a rear ends are interchangeable without changing halfshafts, and all s5 n/a are the same but you can't interchange between the series?
Old 12-02-04, 10:18 AM
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a s4 or s5 turbo lsd wont fit you would need the halfshafts the s4 and s5 non turbo lsd will fit
Old 12-02-04, 11:55 AM
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I swapped in the S5 N/A LSD rear end (from the GTUs model) into my GXL, and yes it is an exact replacement as long as you have the entire assembly including the output shafts. The N/A rears are all interchangeable.

The only thing you have to watch out for is that the output shafts for the GTUs rear are unique to it, and the driver's and passenger's sides are not the same. After the output shafts are plugged into the rear end, it has the same size as all the other N/A rears (no change to half shafts).

I made the mistake of buying the GTUs rear that only included the nose section, so I had to reuse the rear cover from my stock rear and buy the output shafts from another forum member.
Old 12-02-04, 12:43 PM
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All NA rearends swap into all other NA cars with no other changes. ALl turbo rearends swap into all other turbo cars with no changes. You just cant try and swap NA and turbo parts.
Old 12-02-04, 02:28 PM
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Well im currently asking around for a gtu or gxl diff. So i shouldnt have any problems putting it in my '86 base. Right??
Old 12-02-04, 02:58 PM
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Well im currently asking around for a gtu or gxl diff. So i shouldnt have any problems putting it in my '86 base. Right??
<beats head against wall...>


All NA rearends swap into all other NA cars with no other changes
Old 12-02-04, 03:07 PM
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Originally Posted by RotaryResurrection
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Give up Kevin, they either will understand what are you saying or will try and find out later
Old 12-02-04, 06:43 PM
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Originally Posted by I EAT CIVICS
Well im currently asking around for a gtu or gxl diff. So i shouldnt have any problems putting it in my '86 base. Right??
I got a s4 gxl rear end. 300 bucks
Old 12-02-04, 06:59 PM
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That's not bad. I paid $300 for an S4 Turbo LSD rear hub to hub but I had to go to upstate NY to get it. He did throw in the front brake setup for free, but I ended up buying new stuff anyway.
Old 12-02-04, 07:02 PM
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Originally Posted by f1blueRx7
I got a s4 gxl rear end. 300 bucks
man I was just kidding, i'd sell it for 125 if tofu doesn't get the car out first.
Old 12-02-04, 07:11 PM
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Originally Posted by RotaryResurrection
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Damn, even I picked up on that one. Heh, althought I can't say I'm not guilty of overlooking the obvious one of two times .
Old 12-02-04, 07:15 PM
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Originally Posted by f1blueRx7
I've got an S5 GTU can I do a direct swap for the S5 n/a LSD rear end? What about an S4 LSD rear? Do I need to change halfshafts for any of those swaps?

Will all n/a rear ends swap without having to change halfshafts or is it all s4 n/a rear ends are interchangeable without changing halfshafts, and all s5 n/a are the same but you can't interchange between the series?
PM'd you.
Old 12-02-04, 08:46 PM
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i also have an s5 gtu (1989 so its base) and i want to swap in an LSD rear end... what am i looking for? s5 gxl ?

i have heard so many different things i want to clear this up right now
Old 12-02-04, 08:58 PM
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86-88 gxl 5speed, 88 gtu, or 89-90 GTU-s 4.33 (ultra rare).
Old 12-03-04, 12:20 AM
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Originally Posted by RotaryResurrection
<beats head against wall...>
I understood the first time, I just like to clarify certain things before i spend money even if it means i look like a fool on an internet forum. My bad.
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