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Showing results for tags '2x rule'.
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Hi guys, so my team just finished Sebring and we felt that the suspension needed a bit of work. We have a 1986 nissan 300zx, non-turbo. I'm trying to get some upgraded shocks for the car and ideally I would like for it to be within the 2X rule. I saw that according to the rules "The retail price of any NEW replacement wheel, brake caliper, brake rotor (1 or 2 piece), or shock absorber that you put on your ChampCar must be less than twice the cost of a stock replacement wheel, brake caliper, brake rotors, or shock absorber that is available on-line by a nationally recognized auto parts retail chain (i.e. - Napa, AutoZone, O’Reilly, Advanced, etc.)." My confusion here is that all of those retailers have wildly varying prices and I'm not sure which price to base the 2X rule from. Autozone alone has prices from $55 to $150 for a single strut. Additionally, what if the parts are not available from those retailers, such as for wheels, should the 2X rule price be based from the manufacturer website? Thanks!
How does a drum to disc swap work under the 2x rule? Several forum searches have returned results that amount to "aggregate the costs of all the drum parts, you then have 2x that amount to swap discs", but that seems to run counter to posts on other topics that specifically state that the 2x rule is applied on a single component basis; e.g. caliper to caliper. Do you calculate based on equivalent parts, such as shoes for pads, drums for rotors, and wheel cylinders for calipers? And if that's the case, how do you account for the backing plates, which perform some of the same functions as the caliper brackets do on a disc setup?
Hi, I am starting a new team this year for Chump racing and noticed that the rules do not specifically state if the brake pads fall under the 2X rule. Does this mean that brake pads are exempt of this rule? As in, you can spend as much as you want on pads? I found an old forum thread from back in 2013 discussing this, but I know the rules have changed a lot since then so I want to be clear on the rules on pads. Thanks.