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LSD preload
Posted: Tue Mar 16, 2010 3:06 pm
by Sprint36
Anyone know what the preload torque should be for a Sprint LSD set up with alternating internal and external plates?
David
Re: LSD preload
Posted: Tue Mar 16, 2010 7:55 pm
by Mad Mart
Have you tried
Ben's website?
I'm sure Mark & Philip will know also.
Re: LSD preload
Posted: Tue Mar 16, 2010 10:16 pm
by Sprint36
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
Re: LSD preload
Posted: Wed Mar 17, 2010 12:51 am
by SPRINTPARTS
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
Re: LSD preload
Posted: Wed Mar 17, 2010 4:05 pm
by Sprint36
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
Re: LSD preload
Posted: Wed Mar 24, 2010 8:38 am
by Dolly racer 33
Depends whether you are using it for road or circuit.