clubstylus

what size silencers are you guys using? fisher cars do a 5" sill silencer as do car builder solutions. is this small enough for the classic sill?

cheers

matt

I'm using an ex-Caterham side pipe, non-repackable.

Think its 5", but its also long, the full lenght of the sill.
Onto a Fisher mild steel manifold 2" input, 2" outlet.
Nice and quiet for my basically STD 2ltr Zetec, but will need swapping for a better spec engine.

I chopped out the GRP around it to improve air-flow/cooling, very simple to do, & a lot easier to take on & off if needed..

Are you wanting to keep it all tucked inside, & keep the sill in place ??

Matt

mines 5inch diameter and approx 42 long if i remember correctly.

There's no way I would fit an in sill silenser to a ' classic ' unless the sill is removed. Far too hot and risky. Definately don't wrap it either. Make the hole a nice attractive oval leaving a good 20mm gap all round then you'll get no problems. My cut below the door sill is 50mm below then no f/glass at all from under the silenser to the alloy ledge jutting from the chassis. An expandamet cover looks quite smart if you don't want to have it bulging out like mine does.

we were going to do an in-sill type silencer yes!
so do you reccomend just putting a big oval in, a similar size to the silencer then?
ive been in a classic with a sill silencer and it did get quite hot (melted his carpet in places)
we have put the reflective matting on the chassis and the sill to help matters anyway.

Mines 30" long 5" diameter and fits nicely into the RTs sill

Phil

Pete&Matt wrote:we were going to do an in-sill type silencer yes!
so do you reccomend just putting a big oval in, a similar size to the silencer then?
ive been in a classic with a sill silencer and it did get quite hot (melted his carpet in places)
we have put the reflective matting on the chassis and the sill to help matters anyway.

If yours is an RT you wont need to BUT if it's a classic , I'd cut the f/glass from above the silenser right out to the chassis plus give plenty of space at each end. Make sure loads of air can get into the sill from the front without retriction OR your oval cut out will do nothing. Drill out 3 or 4 inch holes under the manifold area f/glass . It's very wide there and 3 , 4 or 5 holes wont be seen from the side view. If it's worth the journey to look at mine up close , you're welcome to come.

My silencer is in my sill, but I've cut holes on the underside, I plan to turn them in to one big oval when I have the time (phil- I'll be borrowing your power file for this ), but from the side it will look normal.

Rob,

how far are you from Kent? we are probally going to be going to Fisher Sports Cars in the next few weeks, so if not too far, will pop in!

I'm 15 miles off junc 20 M25 along the A41 towards Aylesbury.

just been on the phone to that powerspeed place. they supply Tim with a 4" x 30" silencer all in stainless.

do you have a price for a stainless silencer?

£190 + VAt and £12 postage

it is a little expensive, but.....its a smaller diameter and so i think you will probally get away with not having to put air vents into the body around the silencer??

Pete&Matt wrote:£190 + VAt and £12 postage

it is a little expensive, but.....its a smaller diameter and so i think you will probally get away with not having to put air vents into the body around the silencer??

I'd still advise drilling out holes from the underside while the exhaust isn't in the sill, it's a sod of a job afterwards + it doesn't show if you get it right.

Was it you who was after a higher rollbar Alex I have a single , driver only high rollbar that Tim used to run on the RT with a forward diagonal into the passenger footwell left corner. If it interests you let me know and I'll photo it and post it here.
Rob.