I am in the process of fitting a different exhaust (bigger bore) I need to fit another "L" shaped support bracket but I assume the bracket bolts through the chassis, so how do you get to the nuts on the inside of the car, I suppose you have to remove the interior sill trim? but what is actually behind the leather is it just padding or is there some plywood bulking it out?
Or is it better to just use rivnuts ?
Any photos of the sill area please.
Its a 1985 +8

David Byrne

It is padding.
GoMog sills

but aren't the bolts further in board ?

You will need to peel back the sill trim

When I made the brackets up for my Plus 4, I welded the two stainless bolts to a piece of stainless steel strip and had the nuts (nyloc) on the outside of the chassis. This meant that you could check for tightness without having to strip the interior of the car

Not sure using riv nuts would be practical as they are too soft.

Arwyn

John
Many thanks for the GoMog link. A few years back I bought some sills covers which I will be fitting.

Dave how is the covid? Are you getting better?

That's effectively what the factory use on later cars. Two studs welded to captive plate and inserted from the inside of chassis rail to take nuts on the outside. Probably a PIA to remove though, although replacing the L shaped exhaust support from the outside would be easy.

The brackets/kits available from Librands come with bolts that are assembled in pairs with the heads linked by stainless steel strip. So the bolts are inserted from inside, and the nuts are on the outside. The internal trim is pinned or stapled to the floor. I just removed the staples, lifted the trim and drilled the holes and inserted bolts from inside. I did put a bit of padding over the bolt heads to prevent the heads damaging the trim. I removed the seats before starting the work.

Thank you all for the replies, it has been helpful.

teknome, the brackets from Librands do not come with the bolts welded to a strip. (cost cutting)?

old stainless system will be put up for sale later (manifolds to tailpipe)

David Byrne

I have to admit I did buy mine a few years ago, times must be hard in order to remove a critical feature, or maybe it is a lack of knowledge regarding how the product is used

When I made my brackets up, the cost of the bolts/strip element was about 5 quid including the stainless welding.

Arwyn