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        General >> Give/Need advice to/from others >> Diff Advice Needed
        
(Message started by: Dave2302 on Mar 15^th, 2012, 10:23am)

Title: Diff Advice Needed
Post by Dave2302 on Mar 15^th, 2012, 10:23am

Oh B@lls ???

Came to build the 7.5" diffs for the Puma yesterday, have stripped 2 Cosworth GRANADA diffs and robbed the LSD's, and Stripped a 4.27 to fit the LSD into, will also be doing a 3.9 for it soon.

No problem built the diff up, all ok.

I'm using Cosworth Scorpio Shafts Hubs Etc, these have 108mm Lobro's (CV Joints), the biggest of all I'm told.

I have some 108mm Diesel / Cossie Scorpio flanges for the diff, which ages ago some numpty told me fitted the LSD !!
They DON'T !!
Once the LSD is installed these don't fit because the diff gears are central in an open diff and offset in a viscous LSD, and therefore I need a 108mm flange with a longer shaft one side and shorter shaft the other side.

Does anyone know if these 108mm Shaft Joints were fitted to anything standard (with 7.5" Viscous LSD) in the ford range ???

Or am I going to have to have standard open diff 108mm ones machined and shafts from the LSD versions machined and then get hem professionally welded together ???

The only other option I can see is to go down a size in driveshafts, joints, and hub stub axles but I don't want to do this and I'm not even sure these would be the right length, or fit the Cosworth SCORPIO hubs ???

Certainly Sierra rear shafts are too short, as I've looked at a set :(

Any Ideas ???

Cheers Dave

Title: Re: Diff Advice Needed
Post by Dave2302 on Mar 15^th, 2012, 12:08pm

Ahh I've had a reply on another forum................

The flanges I need do exist, 108mm with Viscous LSD were fitted to 2wd Sierra Cosworth.................

Anyone got a pair, I'm going to need 3 pairs in all to build all my diffs up ;)

If anyone has a set they could post me for beer tokens please let me know ;)

Cheers Dave

Title: Re: Diff Advice Needed
Post by Matt on Mar 15^th, 2012, 12:08pm

Hiya dave

i can only assume you will need the granada setup you got tge lsd off

Try the caterham builders forum they use ford rear end so might already have a solution

Title: Re: Diff Advice Needed
Post by Dave2302 on Mar 15^th, 2012, 1:27pm

Hi Matt,

No that's the problem, GRANADA Cosworth has 7.5" Viscous LSD, but 100mm flanges LOL,

The flanges I need are 108mm, but the only 7.5" LSD with these was 2wd Sierra Cosworth....................

The 108mm Diesel and V6 Scorpio's all had open diffs so their flanges, (which I already have 2 sets of, and I think you have another set for me LOL) don't fit the LSD !!

Got a headache now, ;D

I've got one pair of Cosworth Sierra ones coming now, so I only need 2 more sets for the other 2 diff ratios (3.9 and 3.6) ;)

First Event is end of the month, 2wd mode with 4.27 diff, so at least I can get that one in first, building it this afternoon.
Gearbox is already built with 2wd transfer guts, might get engine in and running by Saturday ;D ;D ;D

Cheers Dave