has anyone fitted a saph beam and arb to a 3dr cosworth?
i'm unsure how to mount the saph arb to the chassie on my 3dr.
they mount in different places so i know i need to drill a new hole to fix the arb bracket to, and i have also noticed that the mounting point on the saph chassie drops down a bit compared to my 3dr which is flat.

does anyone have the measurements on where to drill the hole and do you know what to do about lowing the chassie mounting point?

 

The beam fits perfect, you will as you say if using sapphy arms need to use the sapphy arb, which is miles better tbh, unless you just use your 3 door arms sapphy beam ?
The best way to mod it is to get a few bits of say 4-5mm thick metal 1 1/2" wide and about 5" long, put the arb clamp on this, and mark the hole position and drill/tap the hole, then easiest way to sort other end is weld another "eye" type fitting as the other end, make this then drill tap again, offer up to the car to get good placement, then mark it, then measure to ensure centrally located, mark the position of the bolts that need to protrude through the box section and drill out these holes larger than the bolts.
Weld plates in position job done.
tabetha

 

thanks mate, i have a good idea how to do it now
i bought a adrenaline rear beam and arms that was from a saph. thats why i need to fit the saph arb and can't use my 3dr arms.

i have thought of another way of fixing the arb to my chassie. will this work?

find someone with a scrap shell and cut the section out of there chassie where the arb fixs to and weld it onto mine where it needs to be?
i don't mean cut any of my chassie away just trim down the part removed from the saph and weld on top of mine.

 

You could do as you say, but you're still adding 20+ year old metal instead of new, which costs pennies.
tabetha

 

ok thanks for you help mate