My mistake, made some new measurement to day, and it turned up to be 111,5mm from the shaft to the middle of the flange.

Should I use the are for both the ex. ports or just one when I`m calculating it?

I bought it from a friend of mine, so I got ir really cheap:)

Tried it on my car just before I tore down the engine. It started to spool at 3000 rpm, and I think it will hit max boost at 3500-3700.. Didn`t want to push it, because of the stock fuel injection.

It will be back on the road in 2 months,with a rebuilded ported engine,prog. efi,fmic and all the other parts:)

Cheers

Ronny

That sounds like a good number A/R = 0.89



If you only use one runner you end up with half that, which is crazy small.

How many hp will it support?

sooooo...



What is the formula you people are useing to find the AR?







Thanks!

It`s A/R, A being the area of the exhaust port, and R being the distance from the center of the turbinewheel to the center/middle of the exhaust port.

cheers

i was going to say, then tyson said it. The KKK K27 is only offered in .89 or a stupid .85 config

Then he must be one hell of an accurate measurer, 'cause I calculated that from his numbers!