danielyonker

Guys - Who is up to speed on the GTB1 Caymans? Are the x51 3.8s allowed? Are people racing with these (I am told there are some cars with these motors, but could be conjecture for all I know). Are the PCA Scruts checking these?

I am seeing a wide spread in Cayman GTB1 lap times......COTA was particularly noticeable.

On a semi-related note, I'm a huge proponent of PCA using all there new equipment to check motors at the track. I volunteer to go first at The Glen.

Veloce Raptor

I dunno. I co drove one at COTA, and some of the other ones there in GTB1 had incredible straight line speeds. INCREDIBLE speeds. However, some were more or less on a par with ours in a straight line. So i ended up very puzzled, as if there were 2 groups of very different cars all in GTB1.

danielyonker

Dave - All drivers are created equal, so you clearly had a slower car

Veloce Raptor

LOL no our car was quite quick...but when you get walked on the back straight within 300 meters of the exit of 11, when both cars are side by side at exit, regardless of which car was on line & which had a compromised entry & exit line...

Yellow996

I'm not sure what is really going on, but it seems as if all of the Caymans with DFI are significantly faster.

Between competition designed plenums and other go-fast goodies, there is a remarkable difference in the 987.2 performance levels. PCA is loathe to create any new racing classes so perhaps a weight penalty is appropriate for the .2 generation cars.

The newer Caymans have widened the performance gap over the 996s that run in that class....almost to the point of making the 996s incapable of competing on a level playing ground. By virtue of the enhanced handling capabilities of the mid-engine design, which allows for improved entry and exit speed, coupled with highly tuned engines, well, it just ain't fair.

Drivers of the GTB1 996s will ultimately become obsolete if PCA ignores this performance gap within the class.

Veloce Raptor

Ah...maybe it is a DFI thing, combined with PDK. Our car was not DFI, and had a manual.

ProCoach

PDK makes more of a difference than DFI, I look at Schneider as a benchmark at COTA, fastest non PDK car by a few seconds over VR and his co driver, as well as my client and Chris Musante, in an identical car. Surprised that at COTA the 024 and 120 996 cars weren't a little quicker, but I see where they could improve much more than the front running Caymans (109 and the other black car).

Don't think a weight penalty will fix that, but without comparative data, NO ONE can know...

stujelly

I think that is a great question for some PCA scrutineers.. At sebring they let the 3.8 run in gtb-1 but clearly that is an unfair advantage to us lowly interseries guys.

Here in Cali, the PCA put the 3.8s in a different class. Again the cayman with the 3.8 is an awesome combo.

Frank 993 C4S

I think a lot of people "upgrade to GTB1" in order to have more people to race against. Caymans are a killer in "H" but a simple rear wing and splitter will bump a non-DFI Cayman S from "H" to "Prepared I". Problem is that in that class there are not a lot of people to race against so the next step would GTB1 after upgrading the brakes and flashing the ECU. I see a lot of Interseries Caymans in GTB1 although they are somewhat underpowered for that class.

Veloce Raptor

Actually it was within a second, he was low 2:27's and we were low 2:28's. But yes he was quicker. My guy's car was pure Interseries car, full weight, pretty tired (5,000+ race miles), no headers, etc. I have no idea what any of the other GTB1 Caymans had...

coryf

It looks like for the caymen s in gtb1 the 05-08 cars are 2750 and the dfi 09 and newer are 200 pounds heavier at 2950. They do not list the caymen as being allowed to run a 3.8 in gtb2 but b2 is the class for 997's over 3.6l.

smsarchitects

"Drivers of the GTB1 996s will ultimately become obsolete if PCA ignores this performance gap within the class."

I think this has already happened....................

dan212

If you put a 3.8 into a Cayman it would be a GTB2. Pretty easy to check.

There is a very big difference with the DFI engines. ITC classes them differently. So should PCA.

If someone is going to stuff a 3.8 into a Cayman, its most likely a 3.8DFI. Thats a popular conversion. HUGE gain with the DFI and then the difference is massive.

I have a 3.6/911 GTB1. Most of the Caymans pull on me. Actually, they all do and it isn't subtle - P1 and P2 variants. The DFI's just walk away. Until we get up to a certain speed where I am even.

Meantime.... White Caymans scare me.....

pnorwood

Exactly! Caymans AND 996s are absolute killers to the H class. RSAmercias in H are aerodynamic bricks. Even the 3.4 motors in Spec996 pull on us on the straits like we have boat anchors strapped aournd our axels...

mglobe

FIFY