[Fot] Advice on Differential - Stock, Lock or LSD

[gt6steve at aol.com]

If you intend to keep the Roto's for a while I'd be cautious applying any of
the aggressive differential options.

My GT6 had a quaife for many years because of the opinion offered above.  I
noticed a significant improvement in traction out of the hairpin at Phoenix
Raceway the first time I used it.  It's true that you can't lift a tire
though.

When I went to the Datsun hubs and halfshafts I progressed through Detroit
Lockers and welded diffs and sold the quaife as surplus.

I don't know of any clutch diffs for our cars.

And don't even fantasize about gaining any advantage from that stupid "Phantom
Grip"!

Steve



-----Original Message-----
From: Tony and Annie Garmey <horizonracing at msn.com>
To: n197tr4 <n197tr4 at cs.com>; clw2000 <clw2000 at msn.com>; fot
<fot at autox.team.net>
Sent: Wed, Jan 16, 2013 7:41 am
Subject: Re: [Fot] Advice on Differential - Stock, Lock or LSD


Although I have a quaife in the K car, I prefer a Clutch type LSD simply
ecause there tune-able. I have made tools to be able to check the 'breakaway"
f the clutch plates. Peyote and the Devin use Tran x brand diffs with a
reakaway of 35-40lbs. My MGB's run at 50-55lbs and we set the Can Am car up
Hewland) with a 20-25 lbs. By breakaway, I mean the amount of force it takes
o turn one wheel. Every driver and car set up is different and its takes some
est time to find a happy spot. The only "failure" of a quaife "torson"  diff
've found is the spring washers breaking and maybe that was because I
ncreased the pre loaded of the shim pack looking for something a little extra
) . i also recommend redline heavy weight shock proof gear oil.
heersTony
> To: clw2000 at msn.com; fot at autox.team.net
 From: n197tr4 at cs.com
 Date: Wed, 16 Jan 2013 10:22:46 -0500
 Subject: Re: [Fot] Advice on Differential - Stock, Lock or LSD

 i've never heard of a failure with a quaife.

 we installed ours 20 years ago and have never opened it up again.





 Joe Alexander
 A. R. E.
 645 1st Street
 Jesup, Iowa 50648
 319.464.4711  (cell)
 n197tr4 at cs.com





 -----Original Message-----
 From: Charles WATSON <clw2000 at msn.com>
 To: FOT List <fot at autox.team.net>
 Sent: Wed, Jan 16, 2013 7:31 am
 Subject: [Fot] Advice on Differential - Stock, Lock or LSD


 Well my GT6 has O/D and so it was supposed to have the 3.89 ratio diff.
ut
 I
 have found that was swapped out at some point to a 3.27.  I want to go back
 to
 a 3.89 unit.  Any good sources for one?  And for road racing, should I go
 stock, weld it, or go with a LSD.  I hear of a lot of failures with the
 Quaife
 units - so I hate to throw a grand at that product.  Any advice is
 appreciated!

 Thanks,

 Chuck Watson
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