TB993tt

according to UK mag Autocar the new 997 GT3 will use the 997 3.8S engine with internal tweaks, lightweight pistons, more advanced Variocam and larger air manifold to give it 400hp and a red line beyond 8000rpm.
Does this reflect on the basic robustness of the new 3.8S motor or is Porsche going to allow the new 997GT3 to be under engineered -lets hope its the former

Captain Bady

Well, they better do it more than 400 HP (420) because the Ferrari F430 is already at 490 HP and 1372 kg on the paper.

GrantG

This is terrible news! Seems like the bullet-proof nature of the dry-sump GT1 block may be lost with the new GT3 for cost cutting reasons

I wonder if they'll make the same compromise with the 997TT...

Hopefully, it's just a mistake on Autocar's part and the new GT3 will be based on the old dry sump block, but it will share the S's 3.8L displacement

MetalSolid

Don't forget, the GT3 isn't really Porsche's homologation car, it's the GT3 RS. My prediction is Porsche will increase the bore of the 997 GT3 RS [street car] to 4.0 litres with direct injection for 440 bhp, with the car weighing around 2850lbs. I seriously doubt this car will make it to the US.

If the 997 GT3 doesn't come with a proper dry sump they can forget it. Who's gonna buy it? Enthusiasts won't... but I'm sure the posers will. Does this mean the rest of the car will be dumbed down?

GrantG

RC, webmaster on www.rennteam.com insists that the 997GT3 motor will be based on the 964/993/GT1 dry sump block, so again, I hope Autocar just got it wrong...

Carlos from Spain

I really doubt those news too. Doesn't make sense.

TB993tt

I would believe RC over an Autocar Journo - they are pretty clueless about the technicalities of these things - the Porsche spokesman probably told them the 997GT3 would be a 3.8 variocam plus like the 997S reffering to the swept volume and new variocam nothing more - Autocar Journos would not know about the 964/993/GT1 crankcase .

Jack Ennuste

993 GT3 based not on regular 993 engine, but 993 GT1 race bred engine (pls correct if I'm wrong). I'd like to bleieve, the 997 GT3 makes the same move.

Adrian Fuller

Whats all the fuss about 'real' dry sump anyway.

May manual says my engine is dry sump but without separate oil tank. - I take it the purists think this is bo****ks.

I can see the advantage of real dry sump for track conditions with huge centrifugal forces, but, does it really make any difference for road use ?

RSA333

The Ferrari 430, if available in the US, will be priced in the $175 - $200K range or higher, according to the dealer here in the DC area. In any event, as was mentioned by someone, the new 997 GT3RS is the competition car, not the consumer GT3. Just saw these cars (GT3RS) at the factory last week...

Again, how many people will be racing GT3s using slicks in an competitive enough situation to be really affected by the greatly improved oiling system (over the 996) in the new 997? This was what I was told by the factory folks - who knows what the truth really is...
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92 RSA
93 911 Turbo S2
80 SC

Alan Smithee

To both Adrian and RSA333...the whole point of the GT3 is street/club/competition use, especially here in the US where the GT3RS is not available. The 'street' water-cooled flat-6 has proven unreliable in all Boxster and 996s to date, and the motor was clearly not designed for track use (R-compound tires cause oil starvation). Hopefully this, as well as the RMS issue, has been rectified in the 997...but the sensational GT1/Turbo motor is what made previoius versions of the GT3 special (and worth the price premium)...a true Porsche race motor available for street and track use.

Carlos from Spain

I believe thats the definition of a wet sump, but Porsche calls its hybrid version of the boxster and carreras an "integrated" dry sump for obvious semantic reasons. But it not a dry sump nor does it have it capabilities under high G's.
Its not a problem at all in the carreras and boxsters as you say, since they will very rarely be subjected to situations were oil starvation can occur with its wet sump (though it has happened), and you can always upgrade the lubrification system for track use with slicks if you decide to.

The problem is in the GT3 version which is very likely to be put in those situations by private owners, not to mention in Porsche GT3 Cup racing. So not only is the M97 3.8liter of the 997S derived from a non-race breed or non heavy duty intended design (it can't withstand turbocharging for example thats why the 996TT didn't use this engine either and used the GT1 block as well) but also would need a dry sump if it were to be used by the GT3. So the logical choice would be to make a 3.8l from the 3.6l of the 996GT3 which is built from a race breed bullet proof engine.

Thats just my view on it anyway

mkhn

Here's the article in Autoweek about the 05-06 997 GT3:

http://www.autoweek.com/news.cms?newsId=100684

RSA333

Alan Smithee-

I have only heard of oiling problems with racing slicks, not all R compound tires. In any event, I was told by the factory folks (they may be more PR than engineer) that the 3.8 liter engine has improved oiling characteristics compared to the 996 NA motor. I agree that the GT1 engine and its derivatives are bulletproof, but there is always room for the improvement of other great 911 engines. The 993 3.8 liter was a great car.

Also, the 997 GT3RS will be coming to the US as a competition car, according to the Porsche people I talked with.
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92 RSA
93 911 Turbo S2
80 SC

Flying Finn

What engine 997 GT3 RS race car has?

Dry sump?

Well, there's no point of guessing whether street GT3 will have dry sump or not if the race car has it because for homologation rules it has to have it.

Adrian,

That wet sump is even better when you ask marketing people but why do you think race cars doesn't have it that way?