They do not care about protecting prior gen cars. Check the 996 and 997 .2 gt3 vs prior gen RS. They only care about selling future cars.

 

There are a few (other) reasons why we haven't seen a street piston engine achieve > 132.5 hp/L; 918 and 458 speciale were right on that figure, of course:

Diminishing returns, obviously
Shift of R&D resources away from high revving NA engines

I had thought the 991.2 GT3 would need to go turbo nearly 2 years ago (!) - https://rennlist.com/forums/991-gt3-...nk-turbos.html

... but clearly Porsche has seen fit to continue with the high-revving NA formula, even though the Motorsport cars will continue to struggle against the competition. Perhaps not a concern when the GT3 and its brethren receive so much hype, love, and press...

I expect the 992 GT3 to feature a version of the 991.2 GT3 engine, as well as the manual transmission.

 

Porsche has never been very exact on hp numbers for their GT cars.

996rs was rated at 381hp, same as 996.2gt3. However all engines produced well over 400hp.

Wouldn't be surprised if 991.2gt3 is stronger than the posted 500hp and 991.2rs will be launched with a posted 525hp and deliver more.

 

Don't doubt they are inexact. Point was that they've also never cared about protecting an out-going GT; RS or other.

 

Very true.

 

Leading PWC GT series and #2 in IMSA GTLM. Beaten at Sebring due to cut tire and penalty, and by a NA Corvette at that. Porsche doing just fine in motorsport and turbo vs NA has nothing to do with it.

http://world-challenge.com/latest/se...-takes-gt-cup/

http://world-challenge.com/manufacturers-championship/

https://www.motorsport.com/imsa/news...garcia-883940/

http://sportscarchampionship.imsa.co...s=3&series=286

 

correct. as far i remember well Manthey is owned since 2015 51% by Porsche.



it is 3.0l not 4.0l which is a cutoff point in china.
i do not know any country in EU (and in the world) where (above or below) 4.0l is important. i also don´t know any racing series where above or below 4.0l is a factor.



i think 4.2 will come.
it shouldn´t because it was never there in the past - is a weak argument.

was ever before a fix valve drive in a road car which last 300.000km without adjusting valve lash? etc....

0,7l per cylinder is not that super-huge. (for you US guys: in a V8 it would be a 5,6l - kindergarten... )

134ps per liter is possible (458 Speciale)
134 x 4,2 = 563ps

...

i say a 4.2 which revs till 8.500rpm is more likely to come than a 4.0 which revs till 9.500rpm.

 

on the money

 

Achieving over 132 hp/L is very difficult. You guys keep mentioning the Speciale, but that car is overrated. Aside from press cars, it always underperforms. Non press cars can never produce the advertised power. I highly doubt Porsche is going to try to get more hp out of the 4.0 after this generation RS. A 9500rpm, 550 hp 4.0 L is not going to be reliable.

https://youtu.be/-BI2j7-9q88

https://youtu.be/23egWvdFmh0

https://youtu.be/WOBXjUzqMng

Pretty slow for a 597hp, 3100lb car.

 

Who needs 550hp anyway? Just give me reliable 450hp but make the thing lighter with every new iteration. Drove a F458 at the Barcelona track. Felt like a fat pig compared to the lightened and set up 986 Boxster with less than half the hp.

 

Bingo

 

And also the Speciale has 8 cylinders (rather than 6), so much less mass to move at those high speeds (each cylinder 562cc rather than 667cc).

 

Ok to be fair Porsche struggled at both Daytona and Sebring on pace versus the Fords (and others). The frequent cautions at both and the setup choice at Sebring were helpful toward the end in terms of keeping them in the hunt.

The car has reasonable pace overall but they are dependent on BOP to knock the faster cars back and lift the 911 up.

 

I think it will be hard for Porsche to loose a lot of weight with the 991.2rs. And the same goes for making a lot more power.

For those that chase Hp there is always the gt2rs.
And no problem passing sound at tracks. 700hp vacuum cleaners swishing by.

 

From anecdotal experience, 99% of those who NEED >400hp to be fast are >5sec per 1min laptime slower than those who don't give a crap about hp.