TRAKCAR

Just curious if anyone knows the RS details yet.

The torque is the same I believe, but where does the 435HP->450Hp = extra 15HP come from?
Is it just the bigger "Ram" air intakes, or a different program also?
Maybe the final titanium muffler?

Maybe it is mostly marketing?
They could offer an "RS power upgrade kit" for GT3's, or would they void warranty?

Clifton

From what I've read, the intake is responsbile for most of that gain.

rmag

From the extra $20,600 you pay for the RS

Bill996

Agree. Larger pipes on the intake manifold. HP comes from the top, torque comes from the bottom.

TRAKCAR

Thanks guys.

911dev

Don't discount rpms; more revs more power. The RS revs higher than the GT3 and also achieves peak torque at a higher rpm.

Targa Tim

the decals account for 5 hp, so don't delete them...

triode

I think they both redline at 8500.

sharkster

Intake and software is my guess?

mooty

compresssion:
RS 12.2:1
GT3 12.0:1

RPM
RS 450 @ 7900
GT3 435 @ 7600

and most importanly, BS and imagination.

10 GT3

The RS airbox has dual inlets, i.e. a bigger inlet. Porsche said formally that the intake makes the power gain, but I don't believe it is the main part of it. The .2 bump in compression should be good for 2% more power; about 9 of those 15 ponies. The rest would be the better breathing intake box. Does anyone know how thye bumped the compression? CNC program change on the heads, thinner head gaskets or different pistons?

YearOne

We were told by Andreas at the launch that the difference is actually greater than stated...

997gt3north

Didn't I read somewhere different cams as well

If you add compression, larger intake, cams and you give up a few #of tq down low 15 added hp seems about correct - my guess is that it may be closer to 20 to 25 with an aggressive cam

TRAKCAR

Thanks!

I suppose the Dyno will tell.
It would be impossible to tell on track with the diffrent gera ratio's...

Hmmmm...

atleung

This is what the brochure says:

The 3.8 liter engine in the new 911 GT3 RS delivers even more power: 450 hp. The output is 118 hp per liter. This increase is due to the two new double-flow air filter housings and the new variable intake manifold with larger intake tubes than those used on the 911 GT3. The greater throughput of air increases engine power. In terms of performance data, the maximum torque of 317 lb.-ft. is reached at 6,750 rpm.