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. |
DNHunt |
Feb 22 2006, 09:24 AM
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#2
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Well I can tell you what not to do. Don't change the outside shape cause it gets your crew chief kicked out.
I'd call Jake. Of course, you'll find that HP costs. Silly high compression ratios need the right cam. My engine is 9.8 static but, the cam bleeds a bunch of that off. What do they say about stroke? Could you go 94 X 78.4 or even 94 X 80? I imagine I'm not the first guy to think of that so I bet there is a line in the rules about that already. I suspect the torque of a stroker would be really nice on the AX course. My engine feels like a stock 2.0 liter from 2000 to 3500 RPM then the cam comes in. It's fun to watch the tach spin past all the numbers. I smile every time I mash it. I had my 2270 out to Bremerton in January and got in 3 practice runs but, it was raining cats and dogs and I couldn't roll onto the throttle gently enough so I was all over the place. Fun though (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Dave |
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