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BoxxerSix BoxxerSix is offline
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Join Date: Jun 2006
Location: Ballston Spa, NY
Posts: 528
Originally Posted by jbrinkley View Post
I wanted to ask something, the wheels barely spin at idle right? why do you need to prime?
Actually no, pending the mass and bearing setup of the rotating assembly(and of course engine volume) turbochargers at idle spin in excess of 10-20K rpms, some spinning well into the 100-120K rpm range near the surge line of the compressors' flow rate(WOT). Thus the necessity to prime before that initial start.

I built a simple setup on my car that doesn't allow the ignition to fire(while cranking to start) until the oil pressure comes up to 8psi. As soon as oil pressure rises, a relay closes and turns on the DIS(non Porsche) to fire the plugs. Aside from a clog in the feed line this guarantees the turbos have oil pressure before the motor fires up.
Adam Hennessy

Last edited by BoxxerSix; 10-04-2007 at 03:03 PM..
Old 10-04-2007, 02:56 PM
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