RC40 CENTRE BOX/SILENCER

[SMOKE GREY]

Wondering if anyone has built an exhaust system using just the centre box of the RC40? Will be with a freeflow manifold, would it be silly noisy , or very sporty..?

[surfblue63]

I think it might be a bit noisy. The centre box is just a straight through box with a bit of fluff wrapped round a perforated pipe. Very much like a carbon can on a motorbike. If the old A-Series could rev to 10,000rpm it would sound great, but I bet it is more likely to sound like a grass tracker or Mini-Rod.

[GraemeC]

I'm not sure it would sound that good. I'm sure there's more reason to this question than you're letting on - why only keep the low slung centre box in place of a better positioned rear box?

What does Jonny run on the 850?

[imack]

I run my car with a single box rc40, but I've got the centre box in the garage. When running in my new cam I slid the centre box over the tail pipe in an attempt to keep the neighbours happy. It didn't quieten it very much.

['S'-type]

Counter intuitively the twin box system flows better than using the single back box. Don't think anyone has tested with just the first box.


Covered here,
viewtopic.php?f=5&t=28580&p=244463&hili ... ce#p244463

So cherry bomb it is then.