I drove the twin turbo
10-12-2007, 12:46 AM
#61
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It was for sure Gretch, not me!!
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David Roberts
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David Roberts
2010 Jaguar XKR Coupe - 510HP Stock - Liquid Silver Metallic
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10-12-2007, 11:18 AM
#63
Range Master
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10-12-2007, 11:27 AM
#64
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HEY, it worked.. we dragged Gretch back into the asylum!!!
Welcome back!
BTW, here is a perfect Christmas gift idea for you. Take a select few jars of your shine, fill them with fresh cherrys and let them "rest" until time to give out at Christmas. Around here we call them Wild Cherrys :-)
Jeannie's mom LOVES them!!
Welcome back!
BTW, here is a perfect Christmas gift idea for you. Take a select few jars of your shine, fill them with fresh cherrys and let them "rest" until time to give out at Christmas. Around here we call them Wild Cherrys :-)
Jeannie's mom LOVES them!!
Last edited by DR; 10-12-2007 at 12:53 PM.
10-12-2007, 12:45 PM
#65
Owns the Streets
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Who's Jeanine? Who'd you do with Jeannie?
Thor's not gonna like that. Bet Thor with his low C of G would do great in the Redneck Log Roll.
Can someone add Braun shaver (Used to be German. I've got one) to the Enzo Chart.
Hmmmm! A RR Merlin on a dyno. Bet that sucka's LOUD.
10-12-2007, 10:20 PM
#66
Erik,
That is CLASSIC and belongs in the Rennlist Hall of Fame. I don't know when I am gonna stop laughing.. check back with me next week !!!!!
With all the things that have happened the last few weeks I REALLY needed that, THANKS!!!
Unfortunately it does truly sum up threads like these !!
I have forgotten, who was it who drove what car again?? I can't remember!
That is CLASSIC and belongs in the Rennlist Hall of Fame. I don't know when I am gonna stop laughing.. check back with me next week !!!!!
With all the things that have happened the last few weeks I REALLY needed that, THANKS!!!
Unfortunately it does truly sum up threads like these !!
I have forgotten, who was it who drove what car again?? I can't remember!
+ 1 Too funny !
10-13-2007, 09:07 PM
#70
That intercooler arrangement would work for Hacker's Air/Air idea for his SC. Since the discharge points at the passenger side.
10-14-2007, 05:47 PM
#71
Chronic Tool Dropper
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I particularly like the water inlets to the turbines in that first picture.
10-14-2007, 06:26 PM
#72
Car is in the midwest. I was asked not to discuss it until its finished. This car has a ton of extra work. Flared rear fenders, rolled fronts, GTS mirrors, louvered sides in the front fenders & hood, fixed headlights. I believe at this point the nitrous is only for "frosting" the intercoolers, as power will not be a problem
10-14-2007, 09:25 PM
#74
Race Director
Once again, I don't have an ideal comparison, but one that again tries to minimize the number of variables, and that also makes for an interesting comparison. The first chart is a comparison of the '87 S4 automatic transmission Murf centrifugal supercharged car to a '91 GT 5-speed with a twin-screw supercharger. Both cars are intercooled, both have an "X" pipe with stock exhaust pipes behind that, both are internally stock engines, and both are SharkTuned. The runs were done on the same dyno, on the same day, one car right after the other. The dyno used was a Superflow, and the runs are the best ones of each car. The red lines are the centrifugal car, and the blue lines are the twin-screw car. The twin-screw makes more boost down low when the maximum boost for both cars is within .5psi of each other, but the stock Porsche intake with the flappy on the centrifugal car is pretty good at it's intended purpose though.
The second comparison chart is of the same two cars. It's the same GT twin-screw run compared to a run from the same S4 centrifugal car done on the same dyno about six weeks later. The only change made to the centrifugal car from the earlier run was increasing the boost to what I think the current Murf stage 3 kit is now. The red lines are the centrifugal car, and the blue lines are the twin-screw car again.
The second comparison chart is of the same two cars. It's the same GT twin-screw run compared to a run from the same S4 centrifugal car done on the same dyno about six weeks later. The only change made to the centrifugal car from the earlier run was increasing the boost to what I think the current Murf stage 3 kit is now. The red lines are the centrifugal car, and the blue lines are the twin-screw car again.
Perfect....this was just what I was looking for....of course a 91GT to auto S4 is not perfectly fair, since it benefits the GT with the manual and hotter cams...but the S4 performs quite well....plenty of low end torque....
Heres a ??? Why does the torque curve on the twinscrew roll up so much at the bottom vs the centrifugal that never goes under about 375ftlbs?
10-14-2007, 11:46 PM
#75
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Why? Because a larger compressor/area. The down side is a twin screw steals more HP to make boost than centrifugals. And same goes for turbos which take farless HP to make boost but don't have the off idle response twin screws have.