twk63

Is it true that the 991.2 Cup engine can only be rebuilt twice?

What then, new engine? How much does that cost through PMNA?

redmonkey928

Correct, and last I knew mid-60's on an engine.

Racecarsforyou

SpencerB

Is that 36K a rebuild price or new engine?

Racecarsforyou

1st Rebuild

Racecarsforyou

I believe the retail on new engines just went up recently and are now $69k

Cadaver

This is my main reason for sticking with the 991.1 and 3.8

Ted in Rochester

We know that amateur racers and DE drivers typically employ more relaxed rebuild schedules. In fact, some of the “pro’ teams in non-Carrera Cup series skip the 30 hour transmission rebuild and just do the 60 hr. That leads me to wonder, is it really necessary to buy a new engine after 300 hours? ( I also wonder how many Cups even make it to 300 hours). For the next decade +/- this may be a largely academic issue.

Last thought, X years from now, will clever engine rebuilders have learned how to rebuild 300 hr engines for additional hours?

MSTACH

Porsche Motorsports will only rebuild 2 times for cars raced in the Carrera cup series. But that doesn't mean the Indy shop cannot rebuild them beyond that.
We will have a lot more 991.2 and 992 cups going over 150 hours in amateur racing this coming year or two.

redmonkey928

Assuming the engines make it that far, yes... experience with that motor isn't as positive as some of the other iterations.

MSTACH

Rebuild will most likely require sleeving the cylinders. Someone will come up with that soon as more cars are being raced.

redmonkey928

I was more so implying the pre-emtive failures that are most often catastrophic. But yes, in time they will be rebuilt and figured out best options long-term.

MSTACH

Understand,
I've also seen these engines with 150 hours being taken apart and looking good.

zracer196

There are a bunch of us DE guys with them now...Knock on wood...We are going much longer without anything other than REGULAR maintenance with good oils, etc. One guy in the group has well over 200 hours (he is FAST too) on his motor. Had almost 200 hours on the transmission until it started acting a bit "weird"...Installed a used one and no issues since then.

93 FireHawk 968

150-200hours? Holy crap! Talk about playing with fire.