Re: 996 or 997
 

What are the differences between a Sprint engine and a standard Cup engine? And why go with that build spec? Is a Sprint engine a PMNA build spec?

Re: 996 or 997
 

My sprint engine is closer (or exact) to RSR specs, closer to ALMS specs like Flying Lizard in a 3.6 liter configurations. For instance rather than a club race spec or a regular cup specification, it is a pure top of the line 911 spec racer engine with the corresponding higher rev limit and lighter internals. Normally that means more horsepower, more torque, more expensive parts to get the horsepower and torque as compared to a lower spec cup engine.

It has been conveyed to me that there are so many special parts in the RSR Sprint engines that PMS will not sell those parts to (any?) most shops.

I am the third owner of the car. First owner did all of the modifications. I thought that I could get close to 60 hours out of the sprint engine before rebuild, but I was never told that I could. I was always told that anything over 35 hours is risking much.

My choices now are rebuild 3.6 RSR spec, 3.8 RSR spec, 4.0 RSR spec, 3.6 Cup Spec, or 3.8 Cup spec. PMS says that the cup engines should only go 50 to 60 hours, but many people push them to close to 100 hours.

So I am at a crossroads as to what to do. Currently I have a lot of specific RSR parts including wiring harness and ECU. I am not sure what if anything might change if I went to a regular cup engine. The electronics/ECU work perfectly right now so I am reluctant to change anything there. I am leaning on having PMS rebuild the 3.6 at a Sprint spec (once I save up the money to have it done).

Re: 996 or 997
 

1st post! Mine is a 996.

Re: 996 or 997
 

Welcome Tedster and your 996 :)

Re: 996 or 997
 

Hello all. My first post here! Have a 2010 GT3 RS and just acquired a 2003 GT3 Cup car.

Bryan

Re: 996 or 997
 

Welcome Bryan. Awesome combo :) Tell us more about them...

Re: 996 or 997
 

Thanks Fatih. Well the RS is mildly track prepared. It has a GMG RSR roll bar, six point harnesses, RaceKeeper 3 camera video and data logger, tarret rear toe bars and eccentric eliminators, StopTech sport trophy BBK with endless ME20 pads (PCCBs removed and stored), and BBS Motorsport cup wheels with Hoosiers. Oh and of course a SharkWerks bypass pipe for great sound.

Cup is a 2003 with a 2005 gear box. Haven't driven it yet except around the parking lot at TOPP Racing. Can't wait until August 19 when I'll have my first sessions in the car :-DD

Re: 996 or 997
 

Looking forward to your observations after the event on 19th ;)

Re: 996 or 997
 

Had a 6
Now a 7.1 RS
both pretty well modified for track

Re: 996 or 997
 

I had a 996 GT3 and a 997.2 GT3 and preferred the 997.2, it's easier to drive and much faster. I was 4 seconds a lap faster in the 997.2 GT3 at Miller Motorsports Park (Full Track) on the Hoosier R6 tires.

Re: 996 or 997
 

Well its official. I have in my garage a 996 GT3.

Re: 996 or 997
 

Way to go, no electronics! :)

Good find, looking great and I hope to see it soon. I hope you enjoy it for a looong time.

Cheers,