cosm3os Posted April 26, 2011 Share Posted April 26, 2011 I count 17 points on my 99 SM with 205 Kooks, but can't find points for my timing change. Also, anyone know if my stock chin spoiler counts (dunno if there is a base car without it)? I'm trying to stay in E. Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted April 26, 2011 Share Posted April 26, 2011 pretty sure the front lip counts, don't forget the LSD too. Maybe a picture would help on the lip...? timing change is covered with free mod C-10 - Ignition timing adjustments Quote Link to comment Share on other sites More sharing options...
jimbow Posted April 27, 2011 Share Posted April 27, 2011 What model years does your car fit into on the base classification? Did ANY of those cars come with that "lip" for the BASE model? You gotta be able to match part numbers with a BASE model "lip" (or be able to show its a DIRECT replacement aftermarket part) If so - then its base OEM and no points, any other answer its points. Quote Link to comment Share on other sites More sharing options...
Joshua Posted April 27, 2011 Share Posted April 27, 2011 Since the front lip did not come on the base '99 Miata, you take +3 points for it. It sits slightly lower than the OEM fascia, so it's an air dam. I take the same +3 for the R package lip on my '93. One of these days, I'll get off my butt and install a legitimate front air dam for those same +3 points. Quote Link to comment Share on other sites More sharing options...
Red_5 Posted April 30, 2011 Share Posted April 30, 2011 Yes, Joshua is right, no base model Miata's came stock with a chin spoiler. The MSM had it's own fascia, nothing that bolted on. I'm counting your points base on a Spec Miata and can only come up with 16 without the chin spoiler. What are you counting? Also many Spec Miatas run 93 LE tie rod ends which I think require points in PT but I'm not sure which rule it falls under. Maybe bump steer kit? +2? Quote Link to comment Share on other sites More sharing options...
jason Posted April 30, 2011 Share Posted April 30, 2011 TTA Quote Link to comment Share on other sites More sharing options...
Joshua Posted May 1, 2011 Share Posted May 1, 2011 Most Spec Miatas fall into PTE/TTE 1999 Miata TTE @ 2400lbs minimum competitive weight +1 for intake +2 for modified exhaust +1 for cat delete +3 for shocks +2 for springs +2 for anti-sway bars & end links +3 for LSD Sub-total = +14, allowing +5 points for tires untli bumping up into PTD/TTD The Spec Miata tire (205/55/15 RA1) is +7 -7 = +0, leaving 5 points available. If you run Hoosier 205s (+10 -7 = +3) there is still +2 available. Here's a link to a local guys 1999 Spec Miata TTE car competition form: https://docs.google.com/leaf?id=0B73wHMd-IvZIOTU4OTk5M2UtZGEzZC00OTRiLWIzZTktMzQ0ZGYzN2YzMzY1&sort=name&layout=list&pid=0B73wHMd-IvZIZTk5NjI4YmQtZjlhOS00MzdkLTgyZDEtMGYwOTZmODFmZjk0&cindex=3 I think some Spec Miatas are now running adjustable fuel pressure regulators, so that's another +2. Quote Link to comment Share on other sites More sharing options...
Red_5 Posted May 1, 2011 Share Posted May 1, 2011 I believe only 1.6 SM can run a modified intake so unless the OP added it, it shouldn't be there. Quote Link to comment Share on other sites More sharing options...
Joshua Posted May 1, 2011 Share Posted May 1, 2011 ^ Good Point Red5, so +13 before calculating tires for a typical '99 Spec Miata. Quote Link to comment Share on other sites More sharing options...
Markus Posted May 2, 2011 Share Posted May 2, 2011 Just curious - what type of head work are SM guys allowed to do these days? And does that cost any points in PT/TT? For example, grabbed this from a random SM ad online, no idea what it means...... We have three 90-93 SM heads ready to go and on the shelf. These are are built to the 2010 specs. They should help anyones program. Quote Link to comment Share on other sites More sharing options...
TurboShortBus Posted May 2, 2011 Share Posted May 2, 2011 Per my recent email conversation with Greg Greenbaum, a cylinder head that is prepped per the current Spec Miata rules will be assessed points in PT and TT based on this: C18) Valve size change, modified, ported or polished OEM head (other than simple shaving of the head only) +6 In this case, it is probably best to dyno the car and submit the results and minimum competition weight for a base re-class, then you can skip sections B and C on the TTA-TTF classification forms. Review the requirements in the dyno testing section of the PT/TT rules to ensure that you are in compliance before you head to the dyno. Mark Quote Link to comment Share on other sites More sharing options...
awdracer Posted May 2, 2011 Share Posted May 2, 2011 What is it that the SM cars do to the head? Quote Link to comment Share on other sites More sharing options...
TurboShortBus Posted May 2, 2011 Share Posted May 2, 2011 What is it that the SM cars do to the head? 2011 Spec Miata rules: http://www.nasaproracing.com/rules/spec_miata_rules.pdf Engine modifications start on page 4; cylinder head modifications start on page 5. Mark Quote Link to comment Share on other sites More sharing options...
imarcr2 Posted May 2, 2011 Share Posted May 2, 2011 Hi Kyle, Leaving Spec Miata? Quote Link to comment Share on other sites More sharing options...
National Staff Greg G. Posted May 2, 2011 National Staff Share Posted May 2, 2011 The three-angle valve jobs that are permitted in SM (in '10+ I believe) would get hit by our +6 point modification for head work. No, we are not going to make an exception for Spec Miatas (followed by one hundred other car models). They can Dyno re-class if necessary. Quote Link to comment Share on other sites More sharing options...
Markus Posted May 3, 2011 Share Posted May 3, 2011 Greg (or anyone else) - Have you done a dyno reclass on a SM with a worked head? If so - how do these usually come out? Just curious - we typically see some SM's come over to PT/TT throughout the year for additional track time. I'm sure we'll also see some at Nationals supersizing to other groups. So just trying to get an idea in advance how these class out. Thx! - Mark Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted May 3, 2011 Share Posted May 3, 2011 I guess a better way to phrase it might be "at SM min weight and base class ___ what is their max WHP" since you know builds may vary and such... Quote Link to comment Share on other sites More sharing options...
awdracer Posted May 3, 2011 Share Posted May 3, 2011 The three-angle valve jobs that are permitted in SM (in '10+ I believe) would get hit by our +6 point modification for head work. No, we are not going to make an exception for Spec Miatas (followed by one hundred other car models). They can Dyno re-class if necessary. I read the rules and it looks like they are allowed to touch up some ports as well which is also a points assessment in PT. Quote Link to comment Share on other sites More sharing options...
cosm3os Posted May 3, 2011 Author Share Posted May 3, 2011 Hi Kyle, Leaving Spec Miata? Nope. Running enduros which allows me to run whatever configuration is fastest (SM, PTE, SSB, ITA, etc). PTE seems to be the fastest with the smallest number of changes. I count 18 points without the chin. Kooks (205), SM springs/shocks/bars, exhaust, no cats, adj fuel psi, and diff. I just wasn't sure if the "base" had the chin and the diff (I'm a bimmer guy!). Thanks guys. Quote Link to comment Share on other sites More sharing options...
Red_5 Posted May 3, 2011 Share Posted May 3, 2011 I count 18 points without the chin. Kooks (205), SM springs/shocks/bars, exhaust, no cats, adj fuel psi, and diff. I just wasn't sure if the "base" had the chin and the diff (I'm a bimmer guy!). Thanks guys. Sounds about right. I'd still like to get an answer about the 93LE/94Sport tie rod ends most SMs use. Are they considered part of a bumpsteer kit or are they free. Quote Link to comment Share on other sites More sharing options...
Joshua Posted May 3, 2011 Share Posted May 3, 2011 I'd still like to get an answer about the 93LE/94Sport tie rod ends most SMs use. Are they considered part of a bumpsteer kit or are they free. Since the LE rod ends change the geometry of the steering rack relationship to the hub carrier, I think E18) applies: Bump steer kit or shimming of the steering rack +2 Quote Link to comment Share on other sites More sharing options...
National Staff Greg G. Posted May 3, 2011 National Staff Share Posted May 3, 2011 I'd still like to get an answer about the 93LE/94Sport tie rod ends most SMs use. Are they considered part of a bumpsteer kit or are they free. Since the LE rod ends change the geometry of the steering rack relationship to the hub carrier, I think E18) applies: Bump steer kit or shimming of the steering rack +2 That sounds correct, Joshua. Quote Link to comment Share on other sites More sharing options...
Red_5 Posted May 3, 2011 Share Posted May 3, 2011 I'd still like to get an answer about the 93LE/94Sport tie rod ends most SMs use. Are they considered part of a bumpsteer kit or are they free. Since the LE rod ends change the geometry of the steering rack relationship to the hub carrier, I think E18) applies: Bump steer kit or shimming of the steering rack +2 That sounds correct, Joshua. Good to know since I switched back to stock but this is one of those mods that I bet most SMs have. The Mazdaspeed guy thought I was crazy for ordering the stock tie rods a few months back. Quote Link to comment Share on other sites More sharing options...
National Staff Greg G. Posted May 3, 2011 National Staff Share Posted May 3, 2011 It sounds like we need to check a bunch of new items on the SM's running in PT and TT this year. Quote Link to comment Share on other sites More sharing options...
awdracer Posted May 4, 2011 Share Posted May 4, 2011 It sounds like we need to check a bunch of new items on the SM's running in PT and TT this year. Yes, it does Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.