Exhaust Options

[lockyer89]

What's people thoughts on a bike exhaust can? Will it have a big enough impact on the flow for me not use one? Has anyone fitted one?

[speedtripledan]

Not big enough in my opinion, mine at the min is a bespoke 6" re packable made by Martin keenan. Never used a bike one on a car thou so might be wrong. Having had ear splitting loud cans before I want silent now

[brumster]

Agreed with above, I seriously doubt a bike can would offer enough flow or silencing for such a relatively large displacement engine.

[Derek]

I have just ordered one from here, they do boxes for bikes and kits.

 

http://www.motad.co.uk/notforbikes2.php?prod=Kit+Cars

 

£250 ish to include, delivery, a front pipe bent to your requirements, mounting bracket and it is re-packable.

 

So far impressed with the service; I will let you know how it goes.

[Guest wargob]

getting the noise down is key nowadays with the fuzz and if your going on track

[Guest oshiney2]

if your set on a loud one make sure it comes out the passenger side dont know about bike can ??

[Guest Ian & Carole]

Quiet as a mouse

 

[Andi]

Mate had 2 after market bike cans on his v6 hood. Sounded awesome and went like sink

 

Andi

[Guest Dtr36]

i got a bike can to try on mine when i get it running lol

i compare std kit exhaust and bike can see which is best

[Guest davidimurray]

I've got an 1800 Pinto, 4 to 1 exhaust and a GSXR 1000 K4 bike can on mine. When I put mine on I bought a 'cheap' sound level meter, this claimed 102db at IVA RPM, then i fitted a DB killer in the tail, reduced it to 99db then to be on the safe side I put another db killer just before the silencer - my sound level meter registered it as 96db. When it was tested at the actual IVA, it was 92db so I suspect that with no db killers it would have been around 98db. Now have all the db killers removed and gives a lovely rasp when you hit the throttle but not at all uncomfortable and on the motorway you can barely hear it over the aerodynamic noise. Cost me £25 delivered off ebay, bike had only done 1000miles then converted to a race bike.

 

In terms of sizing the can, my thoughts were that a GSXR 1000 K4 has a single exhaust and makes upto 164bhp. In theory you need an amount of air with an amount of fuel to produce those horses. Hence regardless of displacement 100hp in a big engine will have nominally the same flow as 100hp in a smaller engine. The smaller bike engine makes its power by revving to 3 times that of the Pinto. Hence the pinto give long wheezes against the bike engines lots of little puffs. Hence by the time all this exhaust gas gets down to the silencer, the net average air flow should be the same. Well in fact as the Pinto is unlikely to make more than 100hp the GSXR can should be more than adequate.

[Dave Ed]

I've had the exact same thoughts and once I'm on the road will be finding a cheap bandit 1200 exhaust to fit to the exmo

Difference between Revs and engine size, will hopefully be around the same capacity flow and back pressure.

At 25 - 30 quid it's worth a punt.

[Guest peter2b2002]

got a cherry bomb on my 2b for the last 8 years but I'm going to fit a DB killer as it sets off BMW alarms

peter2b

[Snapperpaul]

db killers are ok for IVA & track days but long term restrict power and make the engine run rich

You'll find the the plugs will go black quickly.

If you want quiet run a bigger can

 

Before

 

After

Edited February 8, 2014 by Snapperpaul

[Guest Boost]

Most Aftermarket bike exhaust cans are 'straight through' so don't provide any additional restriction, I fitted this Harris Can;-

 

 

To a Jago, seemed a little 'perkier' and a lot noisier!

 

 

 

Took a bit of fettling with stainless pipe but got there in the end.

 

[Graham B]

I don't think that can will survive a speed bump !!!

 

My car has always un with motorcycle cans . Mostly from R1s .I have never noticed a restriction.

The 1800 turbo engine has 4 x 450cc pots to 7500revs. The bike had 4 x 248 cc pots to 18000 revs -- so should handle volume etc.

 

(Easy to change too !! )