shawsan

Just curious: would a stock 997TT (3450lbs) outdo a 996 Ruf R turbo (3350) lbs with a Ruf engine coversion producing 550HP and 575 ft/lbs of torque in a sprint from 0-60, 0-100, 60-100, quarter mile? Has anyone put the two, side-by-side, in say 2nd or 3rd gear and then hit wide-open throttle to see how they pull vs. one another.

ChristianR

I would put my money on the Ruf, simple physics, less weight & more power equals a win

Christian

DRG13

I'd bet my money on the Ruf

550hp is the published number, I would bet that most 550 conversions are producing closer to 560-575hp..

TT Surgeon

The Ruf no doubt, what would be interesting would be a Ruf 550 coversion 997TT vs a 996 Ruf R turbo 550 on a track, I suspect the 997 would edge it out there.

DRG13

I've had lots of seat time in a Ruf R-turbo at the track, 997 wins that category hands down...

harris

+ less Cw...

I think (correct me if I am wrong) R-turbo is based on a narrow body 996....

harris

wross996tt

I know of one R-turbo in NB (MSRP >$240K), but I think most of them are using the WB version.

shawsan

Here's what I've calculated, based on averaging figures from several tests on the 997TT, versus very limited information on the Rturbo. For, 0-60, 0-100, 60-100, and 1/4 mile:

996TT (425HP/415TQ, 3395lbs): 4.0;9.4; 5.5; 12.3
996 Ruf R turbo (520HP/546TQ, 3375lbs.): 3.8; 8.1; 4.3; 11.9
997TT manual (473HP/457TQ, 3495lbs): 3.7; 8.6; 4.9; 12.0
997TT Tip (480HP/460TQ; 3584lbs): 3.3; 8.1; 4.7; 11.7

More specifically the 996 Ruf R turbo data is only one ONE test and pertains to a 520HP/546TQ conversion versus 550HP/575TQ conversions that is more frequent, especially on cars in North America now serviced by Ruf Auto center. In contrast, the 996TT, 997TT and 997TT Tiptronic data are based on averages of 4 or more tests. I made use of the summary data in the link below;

http://www.weissach.net/996-997_RoadTestSummary.html

My take on the 996 Ruf R Turbo is that power comes on strongest once the car gets moving, even though most reviewers claim virtually no turbo lag at all. Moreover, side-by-side runs of Ruf cars with competitor cars that have even more torque sometimes show the competitors taking the lead but the Ruf catching up and overtaking as higher speeds are attained. This seems to confirm claims by drivers that the power keeps on coming and doesn't taper off, as on stock turbos.

If anyone has anymore data on the Ruf R turbo conversions, please post. The only other figure I have is from dragtimes.com, showing 11.36 for the quarter mile for a 996 Ruf R tubro, but there's no indication of the HP which, I believe is probably a 590HP conversion.

John D II

From the 6speed 1/4 mile times (I believe these are magazine times):

11.9x @ 122.7 - RUF R Turbo 520 HP TT (RWD)

11.5x @ 126.5 - RUF R Turbo 590 HP TT (AWD)
Note: about equal to my K16/24 times - estimated 575-600HP kit

11.0x @ 133.9 - RUF RT-12 / RWD
Note: about equal to my K24/18G times @ 1.2 bar - estimated 680 HP at 1.2 bar)

C.J. Ichiban

another trait of the Ruf cars is that they're typically geared for much higher top speeds than stock porsche turbos...something like 215/220mph vs 195...so they shouldn't "drag" as fast as they could with shorter gears.

RT12 is geared for either 225 or 232mph, I can't remember which and I'm not really sure if or when anyone ever uses that much autobahn to test it out.

C.J. Ichiban

but to OP- I haven't driven the 996Rturbo, just the RT12 around phaffenhausen (up to 310km/h)...and I did take a ride in a Ruf conversion 997TT (just city streets, no race type stuff)...WOW.

John D II

They (RUF) typically install a taller 6th gear to attain the higher top speed, which has no effect on 1/4 mile times...the taller 6th gear is an option that does not have to be installed.