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JB3 upgrade

Clarkey

Well-Known Member
Looking for a upgrade on the JB3 now as another one bites the the dust.

So the strengthening plate works as no issues when that’s fitted. Looks like the gears now are the weak link with 244 ft/lb
 
Are you staying Renault for the box or going o2m?
Staying Renault ideally as the o2m is loads of work and beyond a roofers capabilities....

Got a JC5 sitting in the garage with a new Gripper that I had built early in the year, I know of Clio’s that struggle with the JC5 so reluctant to fit another ticking time bomb.

Might have to try it and find out.....
 
Yes mate, a Megane box, amongst others. Pretty robust, reliable unit, and in the 020 variant comes with a gkn lsd (as fitted to the R26/r).

It's not plug n' play drop-in, but does fit in a GTT engine bay.

What about a Sadev 'box? They're sequential too. Gieffe Racing should be able to refurb them (or supply parts to refurb them) if you find a 2nd hand one in need of some loving.
 
What about a Sadev 'box? They're sequential too. Gieffe Racing should be able to refurb them (or supply parts to refurb them) if you find a 2nd hand one in need of some loving.

I’ve been talking to SWR who are Sadev dealer all year.
There’s not a lot of room to get the gear linkage into the bay on the GTT compared with the Clio’s.

That’s our biggest issue and SWR was talking about a cable to the selector.

IMG_3864.webp
 
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