Racing rules make it hard to keep up, How do I cheat legally |
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Racing rules make it hard to keep up, How do I cheat legally |
Joe Ricard |
Feb 22 2006, 09:01 AM
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#1
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Ok now that I got you to open the thread.
as you all know I moved from SM-2 to X Prepared this year in SCCA SoloII. Street Mod was nearly any engine any size as long as it was Porsche. Prepared has a displacement rule of not over 1.4mm Bore increase. Guess that leaves the 96mm pistons back on the shelf. So how do I get more power ot of the racer. I am getting lighter with better wheels and stickier tires etc. Prepared has no limit on Compression ratio, valve size, ingition, induction, exhaust, piston must be metal and that's about it. Engine I was building was going to have 71 stroke 96mm chinese pistons in german cylinders hastings rings, 11lb flywheel, 6 puck solid clutch, 86b 86b +5 cam, 44 IDF's 2.0L ported heads with dual valve springs, Tangerine header. So I guess what I need if it exists is a 1.4mm bigger piston with hiddeous compression. |
Joe Ricard |
Feb 22 2006, 01:20 PM
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#2
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
I like to keep it simple. by that I mean rotating wieght is rotating wieght Wheel/tire and rotor. if you add a pound on the rotor you got to take a pound off the wheel/tire. However the farther out from the axle you minimize the wieght the better. Lighter tires are faster in going and stopping.
Unsprung wieght is the same deal the closer tot he pivot point on the car the better. a heavier caliper increases unsprung wieght. But again a lighter tire off sets that. If not a one for one wieght trade then does the added braking power provide enough benefit to be faster? I am certain that the new sticky slicks will have way more grip to stop the car than I can generate with stock brakes and good pads. My car does stop quite well BTW. The yahoos on SCCA forums believe there are not engine limitations as they see Prepared being a progression from Street Mod. Makes for and interesting protest. |
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