Newer LSD in an older gearbox?
#1
Instructor
Thread Starter
Newer LSD in an older gearbox?
Hi! So im doing a manual conversion on my -81 eur S this winter. I have most parts incl an -82 5-speed without LSD. But i do want LSD…
I have found an complete -85 LSD diff from a 4 speed AT with housing for a wery good price.
I know i can use an LSD from an AT but will a -85 LSD fit an -82 gearbox?
thanks!
I have found an complete -85 LSD diff from a 4 speed AT with housing for a wery good price.
I know i can use an LSD from an AT but will a -85 LSD fit an -82 gearbox?
thanks!
Last edited by swehedman; 10-10-2022 at 01:37 AM.
#3
Instructor
Thread Starter
#4
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No, the offset of the ring gear is different, requiring a different differential or a spacer between the ring gear and the differential and longer bolts.
__________________
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
#5
Instructor
Thread Starter
do you know how thick the spacer have to be?
#6
Rennlist
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Sorry, it's been too many years, for me to recall the details about what thickness spacer is needed.
Trade your '85 limited slip for the correct limited slip.
Way easier.
#7
Instructor
Thread Starter
Thanks again Greg! If i could find a early LSD or even a G28.10 or later gearbox for a resonable price i would but it. Problem is the market here in Sweden is super small and even extending my search to central europé has not given any results yet.
Of course you have to use your original ring gear with your original pinion. They are an inseparable pair, from their creation to their last day. You loose one...and the other is scrap metal.
Sorry, it's been too many years, for me to recall the details about what thickness spacer is needed.
Trade your '85 limited slip for the correct limited slip.
Way easier.
Sorry, it's been too many years, for me to recall the details about what thickness spacer is needed.
Trade your '85 limited slip for the correct limited slip.
Way easier.
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#8
Instructor
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#9
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If it didn't cost so much for you in shipping, I'd just trade you your later limited slip for the correct one you need.
I've got many of each and one or the other doesn't make much difference to me.
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Cymadesign (10-24-2022)
#10
Instructor
Thread Starter
wow Greg! Thats wery nice of you! If you are seriouse that might acctually be an option. I think shipping isnt the worst part. VAT and customs usually is the killer. But for a swap i dont think i would need to pay those fees. I will contact u via PM.
#11
Three Wheelin'
strange question... we did just the opposite , placing a old LSD in a newer gearbox.....to have best of both .
#12
Instructor
Thread Starter
These parts are not that easy to find anymore at least not in europe.
#13
Rennlist
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#14
Rennlist Member
But those ones are pretty rare now. So they are worth real $$$.
#15
Instructor
Thread Starter
if this is the case then a 85 LSD would have the correct offset for a -83 G28.07 manual box, yes?
Last edited by swehedman; 10-24-2022 at 04:03 AM.