Cams for supercharged engines?
Turbo Mini Forums

Not A series but mini related..

Would the same cam(s) that work for a turbo'd engine work on a supercharged one, or just better to use the NA cam with a small reduction in CR?

I'm thinking that the versions of boosted engine need different things because of the way that boost is created, or is all boost going in the same, no matter how its made?

Anyone suggest some good sites/books on supercharging principles?

Rich

Here for the craic..

Supercharged Arden powered

vmaxscart.co.uk
Supercharging is quite simple and reasonably cheap with all the BMW chargers on the market. Just bought a second one with delivery mileage for £140

I already know of vmax, my brothers got one of the first kits!
The BMW charger is too small for the engine in my mini as well.
Thinking more about it i'm guessing a NA cam with a lower CR is a good starting point.

Here for the craic..

Supercharged Arden powered

Maybe if you'd given more infomation you'd get a better answer!
How was I to know your brother had a charger already.
And you've not said what engine you've got

Okay fair point, but i did say NOT 'A' series so the Vmax kits not going to much use is it? for those that dont know its a 2 litre 16v XE, but i'm not asking about my application more any situation apart from the A series. The beauty of the twin cam is the chance to have a specific cam for both inlet and exhaust (mix and match different types) with the ease of changing it without removing the engine.

Edited by Richspec on 15th Oct, 2006.

Here for the craic..

Supercharged Arden powered

Hi,
You will still want a longer duration on the exhaust cam to get the extra gases out.
However, keeping the overlap period short won't be as critical as it would with the back pressure from a turbo.
With the 16V you can near enough set the overlap yourself with some vernier pulleys!
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

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My Mini build diary

Using a vauxhall LET exhaust cam and an XE inlet cam with the inlet retarded one tooth on the cam belt works very well indeed

Edited by Frisco on 15th Oct, 2006.

Quiet, can you hear it rusting?

BAt and Frisco.
Thanks guys, thats exactly the sort of info i am after :)
Frisco, you running a LET?

Rich

Here for the craic..

Supercharged Arden powered

I have a friend running a supercharged c20LET but in a calibra 4x4. He has used the XE inlet and a let exhaust cam in his as well. For his charger he has used a vortech charger running about 16psi boost. Not seen it working but all the stuff was recommended by SBD developements in Surbiton, Surrey who so i understand are the gurus of vauxhall stuff!!!

Yes I already have one on the road.

Also an early vmax and the one on his website he advertises as 185bhp.

Quiet, can you hear it rusting?