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3 Replies and 1658 Views DP Miata tire and wheel choices  1658  3 Started by  Windman So it is time to get the Ronald McDonald mobile back into action. I need to buy wheels and tires. What are my options these days Ward Marshall '93 Miata D Prepared
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by  FritzSpeedJump to last post
30 Oct 2012 08:58 AM
136 Replies and 28704 Views New XP weight formula proposal  28704  136 Started by  geewiz
(Topic has multiple pages1 2 3 ... 4 )
Looks like there is a proposal on the table to reduce minimum weights for larger engines in XP (details below). While I can get behind this idea, the proposal as written raises a few questions for me.Shouldn't we have a 'shoulder' at which the slope of the minimum weight changes rather than two different slopes entirely As written, a 3L turbo RWD car would have a *lower* minimum weight than a 2.8L turbo:Old weights:2.7 FI 19562.8 FI 19843.0 FI 2040New weights:2.7 FI 19562.8 FI 19843.0 FI 1...
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by  cbrameyJump to last post
26 Oct 2012 06:00 PM
4 Replies and 2849 Views Real Racing Wheels Pro 6 vs. Aluminum Wide 5  2849  4 Started by  FritzSpeed I dug up an older post about wide 5's, but I'm curious if anyone would care to offer any pros or cons of using the Real Racing Aluminum Wide 5 vs. their Pro 6 3 piece wheel (or any other 3 piece wheel). I like the idea of being able to change just the rim if you damage one, and also the lower cost to change wheel width or offset. The Pro 6 and Aluminum Wide 5 both use the same materials of construction, and it seems like the weights would be very close. Is anyone in Prepared currently running wi...
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by  FritzSpeedJump to last post
22 Oct 2012 07:53 PM
1 Replies and 1394 Views New XP minimum track width rule  1394  1 Started by  FritzSpeed Does the minimum track width of 55' apply to a single axle i.e. Can I choose to run a staggered wheel/tire combo so long as one end meets the minimum I am also curious if this would be checked in impound like weight, or if a questionable car would be protested just like any other build rule. Thanks, Joe
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by  mtbpreludeJump to last post
10 Oct 2012 06:31 PM
2 Replies and 1404 Views Help me muffle my Miata  1404  2 Started by  MC52 I don't actually know that I am actually over the SCCA sound limit, if not I'm real close it. Running a 1.8 with Stahl 4-1 header. So far I have tried 2 setups: 1. a 38' long 'cherry bomb' type glass pack and 2. a Hushpower 2 muffler. Both were attached directly to the header and had a turndown at the exit. Any suggestions from you guys will be appreciated.
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by  MC52Jump to last post
29 Sep 2012 03:47 PM
0 Replies and 687 Views Sound and Weight Sheets  687  0 Started by  the3lracer Does anyone know if/when the 2012 Nationals weight and sound sheets may be posted online I'm sure there's discussion about this elsewhere, but I'm too lazy to look. :-P (and I don't think exercise moving the mouse will lose me 50lbs :-D)
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14 Sep 2012 11:31 AM
17 Replies and 7928 Views Slick vs A6 on ashpalt  7928  17 Started by  JR125 I have driven many street tires(XS/R1R/Hankook) &amp; DOT-R tires(710/A6), I have notice that the A6 seem to be faster than the V710 on cooler temp(65F) &amp; ashpalt. I have driven Hoosier Slick for one time(dont remember which model) and it felt weird &amp; and less grip than my A6 but that would not count since the slick is just old stock. I am trying to get into XP so my question is which will be faster A6 or Slick(hoosier/goodyear) in a 60F and ashpalt btw car is a F/I miata 1...
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by  stevemhudsonJump to last post
12 Sep 2012 08:17 PM
3 Replies and 2268 Views Rotax DD2 in Solo  2268  3 Started by  loosecannon Any suggestions or opinions on how to set up a Rotax DD2 for Solo Before anybody suggests I just go out and buy a shifter kart instead, karts are not allowed in Solo here in Canada, the local kart club doesn't have a shifter class and I'm not buying a shifter kart to just collect dust until Nationals in Lincoln ever year. What weight would it have to run at
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by  loosecannonJump to last post
11 Sep 2012 09:29 PM
2 Replies and 1624 Views SOLD - SOLD - sports racer - SOLD - SOLD - SOLD !  1624  2 Started by  Malfred SOLD - SOLD - SOLD - Toyota Powered Sports Racer – SOLD - SOLD - ! &160; SOLD -- SOLD - SOLD - SOLD - SOLD - SOLD - SOLD - SOLD - SOLD - SOLD - SOLD - SOLD !.SOLD - SOLD - SOLD - --- This great handling, easy to drive, center cockpit single seated mid-engine sports racer is called a Toyota WSR. &160;This WSR -(WSR stands for World Sports Racer)- which is a purpose built tube frame mid-engine race car, has a reliable Toyota MR-2 based drive train powering this mid-engine sports racer chassis ...
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by  MalfredJump to last post
02 Sep 2012 02:35 PM
1 Replies and 1041 Views Looking for 1 Goodyear tire!  1041  1 Started by  thirdgenrx7r1 Anyone have an extra Goodyear slick in a 25x13x16 - the product is1980 Anyone have a spare that they want to sell I'll take 1 or 2 if ya have em'.... Thanks!!! Mark Jr. 303-517-8393
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by  thirdgenrx7r1Jump to last post
20 Aug 2012 11:37 AM
0 Replies and 704 Views Anyone willing to have a co-driver in Junior A at Nats?  704  0 Started by  dbartling Since we are not hauling our car this year, I would like to leave the big trailer at home. So I am looking to see if anyone is willing to have a co-driver in Junior A for my son Jackson Bartling. He has been running for several years, he is 13, 5' 9' and 120 lbs. Willing to compensate! You can contact me at Thanks! Donna CP Ladies
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12 Aug 2012 03:14 PM
0 Replies and 787 Views What? No XP cars at the Peru National Tour?  787  0 Started by  FritzSpeed Family commitments prevented us from making the trek, but I was surprised to see no one in X Prepared. Were they bumped to E Modified - Joe
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06 Aug 2012 04:38 PM
5 Replies and 1801 Views body and motors to look out for?  1801  5 Started by  Erv Hi guys, I am very interested in getting into KM, but, I was wondering if anyone had a resource for info on the karts and engines to look for. They look like a blast and seem to 'relatively' cost less to maintain and keep in peak performance. Thanks
5 1801
by  F125AXerJump to last post
23 Jul 2012 10:13 PM
1 Replies and 3957 Views BM - Toyota Powered Sports Racer - On Sale - New Lower Price !  3957  1 Started by  Malfred Reliable &amp; Fast Toyota Powered Sports Racer &ndash; For Sale Life changes &amp; the best laid plans of mice &amp; men often go astray. This puppy has got to go. FOR SALE --- This great handling, easy to drive, center cockpit single seated mid-engine sports racer is called a Toyota WSR. This WSR -(WSR stands for World Sports Racer)- which is a purpose built tube frame mid-engine race car, has a reliable Toyota MR-2 based drive train powering this mid-engine sports racer cha...
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by  MalfredJump to last post
22 Jul 2012 01:36 AM
0 Replies and 1054 Views odd car i believe the is the class i would be in.  1054  0 Started by  matt mcgivney i have a 79 fairmont wagon.the car is stock except the engine. 302 auto 300 hp. more than stock.i want to do 3 local hillclimbs next this the correct class for me
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18 Jul 2012 10:24 PM
3 Replies and 1231 Views removing the roof  1231  3 Started by  BryansDriving Can I remove the windshield and roof from a 4th gen Camaro in CP I have been reading the rules and I'm not getting a clear answer.
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by  BryansDrivingJump to last post
17 Jul 2012 12:48 PM
26 Replies and 6930 Views Penalty for Aerodynamic Aids in XP  6930  26 Started by  Britain Smith
(Topic has multiple pages1 2 )
Now that the XP class has been around for a few years there are finally a few cars being built to contend specifically in this class, including mine. However, I am feeling some frustration regarding the aerodynamic rules for the class in terms what is allowed to be added vs. what some cars come with stock. The rules specifically do not allow the addition of ducting for the front radiator thru the hood, bellypans, or rear diffusers. However some cars (i.e. Lotus) are allowed all of these aerody...
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by  BigEnosJump to last post
11 Jul 2012 05:58 AM
1 Replies and 2259 Views DM aero  2259  1 Started by  EP73Pinto Are splitters, belly pans, and diffusers legal in DM What about the 10' 'spoilers' seen in many of the prepared classes I've tried to read the rules many times but I haven't finished my law degree yet and still have trouble understanding them. :-)
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by  cashmoJump to last post
27 Jun 2012 11:30 PM
1 Replies and 1346 Views Splitter rule clarification  1346  1 Started by  josh dupree So the rules for XP splitters state: Front splitters are allowed and shall be installed parallel to the ground (within &plusmn;3&deg; fore and aft) and may extend a maximum of six inches (6) forward of the frond bodywork/fascia as viewed from above. Splitters may not extend rearward past the centerline of the front wheels. No portion of the splitter may extend beyond the widest part of the front bumper as viewed from above. Does this mean that the splitter must follow the contour of th...
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by  JBrettHowellJump to last post
22 Jun 2012 10:19 AM
66 Replies and 20473 Views Legends car considered for FMod  20473  66 Started by  loosecannon
(Topic has multiple pages1 2 3 4 )
In the December Fastrack: 'The MAC is considering the possibility of allowing Legends cars (e.g. per to compete in class F Modified. Specifications of these cars are as follows: - Wheelbase: 73.00 in (1,854 mm) - Overall Width: 60.00 in (1,524 mm) - Overall Length: 10 ft 6 in (3,200 mm) - Height: 46 in (1,168 mm) - Engine: Yamaha 1250cc (sealed) - Horsepower: 122 hp (91 kW) - Weight: 1,300 lb (590 kg). with driver - Tires: 205/60R13 BF Goodrich Tires Comp TA HR4 - W...
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by  genecooleyJump to last post
20 Jun 2012 09:20 PM
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