Anyone know what the preload torque should be for a Sprint LSD set up with alternating internal and external plates?
David
LSD preload
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Mad Mart
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Re: LSD preload
Sprintless for the first time in 35+ years. 
... Still Sprintless.
Engines, Gearboxes, Overdrives etc. rebuilt. PM me.
2012 Porsche Boxster 981 S
... Still Sprintless.Engines, Gearboxes, Overdrives etc. rebuilt. PM me.
2012 Porsche Boxster 981 S
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Sprint36
Re: LSD preload
Perhaps we should have a survey? Everyone with an LSD pop out to the garage and see how much torque it takes to turn one wheel (with the brake drum off) with the other one locked.
So far I've got the following:
16 lb.ft with the plates in pairs
22 lb.ft with alternating plates
30 lb.ft with alternating plates and a shim
Do I need new plates?
David
So far I've got the following:
16 lb.ft with the plates in pairs
22 lb.ft with alternating plates
30 lb.ft with alternating plates and a shim
Do I need new plates?
David
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SPRINTPARTS
Re: LSD preload
Original build (Factory) specs for a Power Lok LSD is 90ftlb torque.
If you run very sticky tyres, or have heaps of BHP, it is worth raising this a bit to say around 110-120ftlb.
Mark
If you run very sticky tyres, or have heaps of BHP, it is worth raising this a bit to say around 110-120ftlb.
Mark
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Sprint36
Re: LSD preload
SPRINTPARTS wrote:Original build (Factory) specs for a Power Lok LSD is 90ftlb torque.
If you run very sticky tyres, or have heaps of BHP, it is worth raising this a bit to say around 110-120ftlb.
Mark
Really? That's high. That must be horrendous on slow tight corners.I found some info for Alfa (ZF) diffs saying around 43 for alternating plates and 21 for paired plates, dry. Reduced to around half that with oil.
David