PT

Hi,

A "newbie" question - I heard a lot about long neck (on the C2T) vs the 930 ones. Anyone has pictures of what it looks like?

And, is it that much better than the older style that I should consider changing it?

thanks.

A930Rocket

Here's one installed in a 930. It has been done, but is more expansive than a Kokeln.


Here's a stock one

Sameer

I'm using Kokeln intercooler and yes its a big difference from stock.

Test Result

Charged side face area in square inches Cubic inch mass
Stock 21.4 258
Andial (Garretson) 72.6 508
Ruf 53.5 498
Kokeln 73.0 642

For comparison purposes a test was ran on a stock 1988 911 turbo at 5000 rpm with an outside ambient air temperature of 85 degrees Fahrenheit and turbo flow rate was approximately 430 cfm. The results were as follows:

Intake Temp Outlet Temp Pressure Drop
Stock 218 151 .50
Andial 220 120 .50
Ruf 220 119 .50
Kokeln 222 109 .48

Fits in the stock location, with Air conditioning, can flow as much as 900 CFM @ 2.6/1 pr Ratio with less than 1 psi drop

PT

Does it mean that with the long neck, you can remove the old style BOV (including the entire "intermediate throttle body")?
What does the new style look like & where does it fit in the car?

thanks...

Brent 930

Yep, it's the same setup as the 91-92 C2 turbo design.