Street Modified minimum weight
Street Modified minimum weight
for 2013 i'm going to try and actually do a season of autox rather than my random fun runs. So, obviously i'm digging into the rules. Car had lots of changes this year, specifically a 2.4 build.
Checking my minimum weight, I calculate a minimum weight of 2934lbs w/o driver. 2380cc motor, 285 tires, and 1.4L added displacement for having a turbo. My tires are 1 size wide to get the 200lb break on "skinny" tires.
I'm simply asking, am I smoking crack getting this weight or am I actually going to have to add ballast for this rule? If so, why the F do they make us be so damn heavy?
Checking my minimum weight, I calculate a minimum weight of 2934lbs w/o driver. 2380cc motor, 285 tires, and 1.4L added displacement for having a turbo. My tires are 1 size wide to get the 200lb break on "skinny" tires.
I'm simply asking, am I smoking crack getting this weight or am I actually going to have to add ballast for this rule? If so, why the F do they make us be so damn heavy?
I have a 2.3L and my min weigh is 2910lb. You should be at 2940lb (assuming you have a 2.4L). That's very easy to get to. I'm sitting at about 2950 right now and I'm not even built to the letter of the rules. You could always get down below minimum and then use ballast to better the weight distribution.
I have a 2.3L and my min weigh is 2910lb. You should be at 2940lb (assuming you have a 2.4L). That's very easy to get to. I'm sitting at about 2950 right now and I'm not even built to the letter of the rules. You could always get down below minimum and then use ballast to better the weight distribution.
Maybe I can make a ballast that mounts in the spare tire spot. Seems like a good location to me...
Guess I'll see what my final weight comes to when I'm done with winter mods and go from there, but i have no doubt it'll be below the high weight
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Except you can't necessarily pound the fender seam flat in SM... The SM rules say you can do minor clearances to fit allowed modifications, except when specifically not allowed in the rules. The SP rules specifically say that no modifications inboard of the hub are allowed to the fender well. I've interpreted that to say no pounding of the seam.
That being said, you don't need to flatten it to make 315's fit. They will rub it at full lock, though.
That being said, you don't need to flatten it to make 315's fit. They will rub it at full lock, though.
Originally Posted by SCCA 2012 Rule Book
16.1.P. Any minor modification, intended to allow or facilitate any allowed modification, is permitted as long as it does not provide any intrinsic performance benefit in and of itself, does not provide a weight reduction of more than 1 lb, and is not explicitly prohibited elsewhere within these rules.
This rule is intended to allow minor notching, bending, clearancing, grinding; the drilling of holes; affixing, relocating, or strengthening of brackets; removal of small parts, and similar operations performed in order to facilitate the installation of allowed parts or modifications. Minor strengthening, without relocation, of original chassis/suspension pickup points is allowed. Examples include welding washers restricting control arm mounting bolt movement, local reinforcement of control arm chassis mounts, etc. Competitors are strongly cautioned to make the minimum amount of modification required to affix a given part, and to not make unduly tortured interpretations of this rule. Modifications to the firewall in order to allow for increased engine setback, and any modification that changes the location of a suspension pickup point, are explicitly forbidden. Plastic under-trays and covers below the vehicle may be removed or modified as necessary to facilitate other compliant modifications, but not added or enlarged.
This rule is intended to allow minor notching, bending, clearancing, grinding; the drilling of holes; affixing, relocating, or strengthening of brackets; removal of small parts, and similar operations performed in order to facilitate the installation of allowed parts or modifications. Minor strengthening, without relocation, of original chassis/suspension pickup points is allowed. Examples include welding washers restricting control arm mounting bolt movement, local reinforcement of control arm chassis mounts, etc. Competitors are strongly cautioned to make the minimum amount of modification required to affix a given part, and to not make unduly tortured interpretations of this rule. Modifications to the firewall in order to allow for increased engine setback, and any modification that changes the location of a suspension pickup point, are explicitly forbidden. Plastic under-trays and covers below the vehicle may be removed or modified as necessary to facilitate other compliant modifications, but not added or enlarged.
you absolutely can pound the body seam flat in SM. you could even cut it off if you'd rather not bend it, assuming you don't go crazy and cut off a >1lb chuck of chassis or turn it into a mini tub. I think 16.1.B makes the issue pretty clear.
Originally Posted by scca rules 16.1.b
Competitors may pick and choose between all Stock, Street Touring,
Street Prepared, and Street Modified category allowances when preparing
an SM car. Apparent conflicts between inherited rule sets from
16.1.A shall not prohibit any specific inherited allowance. Allowances
inherited from 16.1.A may not incorporate SM-specific allowances.
Foreign spec parts may not be used to substitute for parts which are
required to remain stock.
Street Prepared, and Street Modified category allowances when preparing
an SM car. Apparent conflicts between inherited rule sets from
16.1.A shall not prohibit any specific inherited allowance. Allowances
inherited from 16.1.A may not incorporate SM-specific allowances.
Foreign spec parts may not be used to substitute for parts which are
required to remain stock.
Last edited by griceiv; Dec 5, 2012 at 04:28 AM.
Ok...but you still don't need to do it to make 315s work, so I erred on the conservative side for this year. Also, based on conversation with a few other SM competitors at the Toledo Pro this year we were thinking it was not allowed. I'd hate to have an issue over it.