The V8 Owners Forum -

hi every body,

somebody can give me the measure of the plenum chamber for a v8 3.5L ROVER EFI i have the chance to buy a act carbon plenum, and i woulD know the height differnence, this is to fit onto a mgb bonnet

thanks a lot

laurent

Laurent,

Is that a 3.5 Hotwire or flapper system, I'm not sure they are the same dimensionally at the join between the trumpet base and the plenum perhaps some one can chip in and confirm.

None of the standard Rover EFI systems will fit under a standard MGB bonnet and the usual thing to do is to machine down the trumpet base and the plenum.

Alternatively you can get a good quality MG RV8 bonnet with the bulge for the EFI from Honeybourne Mouldings for a reasonable £90.00

If you want to fit an ACT plenum I assume the engine has been modified to flow alot more than standard, otherwise your wasting your money apart from the under bonnet look.

Kevin.

Just call Tim at ACT, he's a very helpful chap.

I've not seen any that are higher, just bigger in plan due to the adapter plate....
... but there are several versions of plenum & I guess you need to identify the one you are talking about.

hi guys,

i have the dimension of the act plenum chamber, and this why i would like to compare with the standart 3.5 EFI

THANKS
LAURENT

the actual Plenum top is 100mm high in the centre , thats just the top part above the trumpet base

I have a trumpet base and a hotwire plenum lid (which is the same height as the flapper one).
where do you want the measurement between?