Minicooper
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| posted on 23/6/11 at 02:39 PM |
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Sierra 3.62 pumped lsd Diff
Hello,
What is a fair price to ask for a sierra 3.62 pumped up lsd diff by phil jones?? whoever he is. I know it's worth what someone will pay and all
that. Zero miles since conversion
Cheers
David
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omega0684
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| posted on 23/6/11 at 02:56 PM |
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"pumped up"?
I love Pinto's, even if i did get mine from P&O!
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Minicooper
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| posted on 23/6/11 at 02:58 PM |
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That's how the previous owner referred to it, it's basically uses thicker viscous fluid in the lsd unit for a tighter diff
Cheers
David
[Edited on 23/6/11 by Minicooper]
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MikeFellows
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| posted on 23/6/11 at 05:07 PM |
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im confused
its a 3.62 lsd that phil jones put some thicker oil in?
edit:
well ive googled and I see other people selling pumped diffs but I'm still no closer to finding out what it is
[Edited on 23/6/11 by MikeFellows]
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Minicooper
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| posted on 23/6/11 at 05:23 PM |
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As standard the sierra lsd is loose compared to plate diffs and the like, so an upgrade is to remove the standard fluid and put in a thicker more
viscous fluid therefore tightening the diff. The differential casing oil stays the same it's the internal fluid in the viscous diff that is
upgraded
In the ford world it is a fairly well know upgrade path for the lsd.
I'm off out soon but will find an article descriping the upgrade in detail, it is a complete strip and rebuild to do this work
Cheers
David
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Liam
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| posted on 23/6/11 at 05:43 PM |
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Aye - a friend of my dad's had a competition escort cossie, and when set up for tarmac both the centre and rear diffs were set up so tight with
different spec fluid that when pushing the car by hand, you only had to put a tiny amount of steering lock on for the diffs to lock up so much you
couldn't move it! 
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fesycresy
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| posted on 23/6/11 at 06:27 PM |
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Easy answer, ring Phil at Road and Race Transmissions - 01959 525105.
Having never heard of 'pumped' diffs, I can't comment, but the standard viscous is designed for a heavy 4x4, if anything the diff
needs to be de-rated.
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The sooner you fall behind, the more time you'll have to catch up.
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Minicooper
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| posted on 2/7/11 at 10:16 AM |
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Found this while looking for Tigra gearbox options, about half way down the page you will see a pump up service for the Sierra viscous lsd diff at
£230
http://www.pjed.co.uk/engine_development_differentials.htm
They strip it down completely renew seals, empty viscous unit, refill viscous unit with a slightly thicker fluid and then totally rebuild set
backlash, etc refill diff with oil.
The fluid that use in the viscous lsd is only slightly thicker than the standard ford fluid and therefore still absolutely suitable for road use,
anyway it's now going in the fro sale section
Cheers
David
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Neville Jones
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| posted on 3/7/11 at 09:40 AM |
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quote:
Originally posted by fesycresy
Having never heard of 'pumped' diffs, I can't comment, but the standard viscous is designed for a heavy 4x4, if anything the diff
needs to be de-rated.
I'd second that opinion all the way.
I'm presently dealing with a customer car which has a standard Sierra viscous lsd. Trying to dial out push into corners and power on oversteer
out is extremely difficult, as the diff is as good as locked, with the little weight on the rear wheels to make the viscous diff slip.
When put into a lightweight 7 type car, these Sierra viscous diffs need softening up by quite a bit.
Oh for an original genuine Gleeson Torsen! (And definitely NOT a quaiffe!)
All in my very humble opinion, of course.
Cheers,
Nev.
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mad-butcher
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| posted on 3/7/11 at 06:39 PM |
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working on what's been said: bike engine car, no reverse, pumped up diff could be fun pushing it backwards. in fact thinking about it the engine
would really love it going forwards.
tony
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ajw
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| posted on 8/7/11 at 04:56 PM |
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phil jones diff
have 3.9 pumped diff by phil jones in Indy r ,works a dream. Plate diffs very severe unless u want to do a smoking drift through the hairpins. Have
280 bhp on race michelin slicks
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