Thread: Building a 2.8
View Single Post
Steve@Rennsport Steve@Rennsport is offline
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Quote:
Originally posted by edbaus
Steve,

Good, you jumped in.

I saw an earlier post that you built a long stroke (for lack of a better distinction) for a customer.

Given the choices, would you build the 2.8 short stroke or another long stroke.

Given my purpose is a dedicated gt4s racer weighing in at 2k lbs.

Based on the long stroke motor. What about a later 3.0L case with special made 92mm cylinders. I figure cmw or us chrome could come up with a set if asked.

Thanks

Ed
Hi Ed:

We've done a LOT of 2.8's over the past 28 years,... Its an awesome combination for several reasons and I'm quite fond of them.

I'm a believer in "area under the curve" and for that reason, a long stroke engine produces a more useful and wider spread of torque over a short stroke version, all things being equal. Its the kind of performance that gets a car out of a corner,....

One of the 2.8 race motors we did was built on an SC case & crank (with a LOT of custom preparation), Pauter rods, GT-3 R oil pump, special 91.5mm cylinders with steel liners, twin-ignition, custom cams, 935 heads that received airflow enhancements and bigger Ti valves, and 50mm PMO's on raised, PMO tall manifolds.

This motor made 327 HP at 7900 RPM. Without question, this was NOT cheap, but was very strong & reliable since the owner was very hard on equipment and we wanted maximum durability as well as competitive performance.

Ultimately, it depends on one's budget and expection for how long it should last.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 06-07-2005, 10:12 PM
  Pelican Parts Technical Article Directory    Reply With Quote #10 (permalink)