Tricky Dave
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| posted on 20/6/06 at 06:40 PM |
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Viento diff, online breakers yards
Hi
Another silly question I'm afraid!
I've been looking for a 3.36 LSD to replace the 3.62 one I've got at the mo (mated to BMW box, gearing too low, engine nice and flexible
anyway). I got asked if I needed a 7 or 7.5" one, and embarrassingly I had to confess I didn't have a clue. Felt like an utter chopper!
Again.
So... where are these inches of which they speak measured? Anyone know which size I should be using?
Can anyone tell me which models / years of sierra had the diff I'm after?
And on a not totally unrelated note, has anyone had success using any of the onlone breaker's yard services? Any recomendations?
Cheers chaps
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rusty nuts
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| posted on 20/6/06 at 06:44 PM |
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Piddy had one for sale recently , don't know if he still has it. Check the for sale section it could save you a bob or two
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need4speed
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| posted on 20/6/06 at 07:08 PM |
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It's a 7.5" one in a Viento, well that's what I was told by Grant. not to hi jack the thread but what other kit uses a 7.5"
diff?
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Tricky Dave
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| posted on 20/6/06 at 07:13 PM |
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Cheers, will U2U piddy now.
If that's measured across the long bolt holes, I suspect I've got a 7 with washers in to space it out! Pobably not too good?
Any idea which model of sierra anyone?
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Liam
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| posted on 20/6/06 at 07:59 PM |
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Lots of kit chassis are made to fit either a 7" or a 7.5" diff. You use spacers/washers on the top mount if you fit the smaller 7"
which is no problem at all. You really only need the bigger stronger (and heavier) 7.5" in such a light car if you have serious power (over 300
bhp?)and grip. You're probably better off sticking with a 7" but no reason why you couldn't fit a 7.5" (as long as it
isn't a 2wd cosworth one with bigger drive shaft flanges as that will require you to change the shafts, bearings etc etc too).
As for the ratio, as far as i'm aware LSDs only come in 3.6 and 3.9 as standard. If you want a different ratio LSD you will probably have to
make one from two diffs.
Liam
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Tricky Dave
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| posted on 20/6/06 at 08:23 PM |
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7" OK - good!
Nothing less than 3.6 as standard - bad!
Then again, my motorway cruising rpm isn't as bad as I thought - only just got the speedo going, and what I previously estimated to be about 70
(on a dead motorway at night) has turned out to be closer to 100. Oops.
Still, for the sake of the wallet it would be nice to be able to get to the lakes, Scotland, Le Mans etc without having to refuel every 100 miles, and
as I said I think the engine's flexible enough that it could easily cope with longer ratios.
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chrisj
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| posted on 21/6/06 at 07:23 AM |
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I'm running a 7" 3.17 LSD (approx ratios) which I got from a supplier down London way. If you speak to John at Kit Bits he will let you
know what's around. As I understood from him bike engine cars have taken loads of these off the market and pushed the prices up (£250
refurbed).
As for fixing it, onto the chassis I cut down some tube rather than washers.
Horsepower, mine's 350 to 400 depending on the Ron rating.
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Tricky Dave
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| posted on 21/6/06 at 05:03 PM |
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Cheers Chris.
LV350 - nice!
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