Viewing 12 posts - 1 through 12 (of 12 total)
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  • Ann CriquiAnn Criqui
    Keymaster
    Post count: 125

    Nuts ‘n’ Bolts

    Michael DemingMichael Deming
    Participant
    Post count: 8

    Street Springs?

    I’m still a rookie, but looking to up my game in my C-Street 2013 Mazda MX-5–while staying in the “Street” category.  I definitely need new shock absorbers (which, according to section 13.5, can be darn-near anything stock-ish as long as I don’t use a cutting torch to make them work) and I’m thinking new springs might be a good idea as well.  Could anyone advise me on section 13.8 of the 2018 Solo rules?    Per 13.8(A), “Standard, as defined herein, suspension springs must be used.  They may not be cut, shortened, or collapsed. Spring perches may not vary from the OE shape within the working part of the perch.”  Is this basically saying, “No coilovers if your car didn’t come with coilovers.”?  If I use stock-ish springs and stock-ish shock absorbers but my car ends up sitting 1″ lower than before, will I fail tech inspection for C-Street?

    Thanks in advance for any guidance!

    Matt LeicesterMatt Leicester
    Participant
    Post count: 129

    Tech does not check for legality, only safety, but you need stock springs.  The allowance in the rules is to allow stock replacement springs from other vendors, not to allow any dimensional differences.  At all.  Ride height needs to be stock, spring rates need to be stock.  The wording just allows for something like a Moog replacement for your 1963 Chevy II when you can no longer buy a new spring from Chevy.

     

    Shocks and good alignment work wonders on Miatae, do not give any thought to replacing the stock springs.  There are better things on which to concentrate.

     

    Matt Leicester

    Michael DemingMichael Deming
    Participant
    Post count: 8

    Thanks for the great advice, Matt!

    John VictoriaJohn Victoria
    Moderator
    Post count: 97

    Hey Michael I think if you were to get a co driver to driver with you for a while say the winter series, that would be a big plus. A co driver with some autox time should be able to put a lot of things into prospective for you, my thoughts. I would hold off on any mods to your vehicle and work on the loose nut behind the wheel first…..

    JV 33BS

    Patrick FrankPatrick Frank
    Participant
    Post count: 2

    Quick question, is a front bumper cover required to pass tech? Have a fiberglass wide body kit and the front bumper got ripped off and haven’t had time or $$ to reattach yet, all the crash and supports are intact just no cover.

    Kelly McKelly Mc
    Participant
    Post count: 7

    ^ I doubt it’s required to pass tech, but you’d need to find an appropriate class for your car that allows no front bumper. Perhaps the new local “OST” class, if you’re running on 200+tw street tires.
    You’d also want to make sure that hitting any cones isn’t going to smash anything exposed like your radiator, intercooler?, electrical wires, hoses, etc.

    • This reply was modified 5 years, 9 months ago by Kelly McKelly Mc.
    Patrick FrankPatrick Frank
    Participant
    Post count: 2

    Supposedly it’s allowed in modified, that said even factoring in the bumper being attached the other mods put it in classes way beyond its prep level so it’ll never be competitive and very unlikely to be questioned (also only run in local events).

    Jeffrey HugoJeffrey Hugo
    Moderator
    Post count: 279

    OST requires all body panels be present, so that’s not an option.

    Its not technically required for tech, although we’d be concerned about the additional risk to the vehicle (ie is the radiator now unprotected so the vehicle is likely to dump all its coolant from a cone hit) and the additional risk to corner works in the unlikely event that the vehicle happens to hit one.

    Zip tieing the cover on like the drifters do would be vastly superior over not having it.

    Bart StevensBart Stevens
    Participant
    Post count: 2

    Hello all,

    I want to buy decent autocross tires for my 1986 Toyota MR2 – the stock tires are 185/60-14 on 5.5 inch wide rims. The only tire I can find in that size is the Dunlop Direzza. I’d like to run 195/50-15 size tires where there is a lot of choice, but neither Tire Rack or Discount sell a 5.5 inch wide 15 inch wheel with the right bolt pattern. Can I go up to 6 or 6.5 inch wide wheels? (The rules says I can’t). I don’t plan on running the whole season, probably a half dozen events or so.

    Thanks!

    Bart StevensBart Stevens
    Participant
    Post count: 2

    I’m running in E Street, stock vehicle.

    • This reply was modified 5 years, 8 months ago by Bart StevensBart Stevens.
    Brian KellyBrian Kelly
    Moderator
    Post count: 141

    I know there are some options out there for a 15×5.5, but they are few and far between. If I were in your boat, I would run the Dunlops in the 14″ size. They’re a great tire, and pretty on par with the RE71 and the Rival.

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