Is there a special way to find the a/r ration for a twin divided housing?

I`ve got a KKK K27, the real one, not the one SR Motorsport is selling.

I tried to find the a/r ration on it, using the area of both the ex. ports divided by the distance from the turbine wheel center to the center of the ex. ports, but I`m only getting weird numbers..

If anyone would like to help me out, the measurement are as following:

2 ex. ports with 45mm x 28mm "holes" each, and 68mm between the turbine wheel center and the center/middle of the ex. ports.

Any help a is appreciated.

Here`s some pics of it.



Ronny

The k27 next to the stock t2 turbo.

one more.

Last one.

Converting to square inches and inches before dividing gives you a much more resonable number. 1.46



It's only 68 mm from the shaft to the middle of the flange? It looks like more in the pictures.

Yeah I`m pretty sure it`s 68mm, but I`ll take a new measurement just in case. Here`s a pic of the exhaust side, showing the size a bit better.

It`s got a 76mm turbine wheel and 68mm outlet on the exhaust side,and a 87mm compressor wheel and 42mm outlet on the intake side.

How many hp do you think it will be good for?

Both of these lines would have to be 68mm then.

your K27 looks alot different than mine...



Anyways, what is the forumla you guys are useing?

How much and where did you get it?

Well, check ebay...



And I got mine for $200 shipped.