1.6L Miata Weight | 2255 lbs?

[vicktorvolpe]

I don't usually run ITA, but for the Devil in the Dark I'm running in a friends car.

I need to make those new 2" numbers with our weight....for a 1.6L miata is it still 2255 lbs? I pulled this from the GCR, but never followed fast track for IT updates.

Cheers,
Vick

[red986s]

Yep, it's still 2255 for a 90-93 ITA Miata. A 90-93 SM racing in ITA is 2300?

[Abhi]

Yep, it's still 2255 for a 90-93 ITA Miata. A 90-93 SM racing in ITA is 2300?

I needed to get those decals too. Could someone please tell me the weight for a 95 Miata in ITA trim, running in ITA. I read the GCR and it seems to imply 2380.

I was thinking of running STL as an additional "practice" class, and the weight seems to be 2340 for a 1.8. Is that correct ?

The GCR also says, "GCR listed IT cars of 2 liters
and less engine displacement, 1985 and newer, may compete in
STL under their current IT specifications."

So is that 2380 or 2340 for STL ?

Thanks
Abhi

[Greg Amy]

So is that 2380 or 2340 for STL ?

Whatever your ITA weight is, assuming you meet all ITA specs.

1.8L STL cars are going to 2430# as a base weight effective March 30th (with RWD having to add another 2.5%), so there's no value in your running in STL trim, unless you want to pull your restrictor plate. But note that if you do that, you must meet ALL STL specs, including weight and ride height (for example), and all mandatory safety equipment (e.g., dash bar).

Stick with ITA prep.

GA

[JeffYoung]

Greg, what is the total RWD adder now in STL? 5 or 7.5%?

[Greg Amy]

Greg, what is the total RWD adder now in STL? 5 or 7.5%?

Currently still 2.5%.

[ner88]

Vick
If you're running your 1.6 Miata in ITA, remember a torsen and de-powered Power steering rack are not legal.

[Andy Bettencourt]

Vick
If you're running your 1.6 Miata in ITA, remember a torsen and de-powered Power steering rack are not legal.

Among other things like the 94-97 chassis bracing, ride heights usually, etc. But nobody has protested to date IIRC because the performance isn't up to IT spec...but there are no connections between IT and SM so it could flip flop.

[lateapex911]

Why is the torsen illegal? Are there case mods that get done to fit one or...?

[dickita15]

Why is the torsen illegal? Are there case mods that get done to fit one or...?

in SM they swap cases.

[vicktorvolpe]

Guys, thanks for your concern. it's not my car, it's the heman racing 04 car....in the gulf livery. It's an open diff....which makes tire wear interesting coming out of that last segment at Thunderbolt!

My SM car could never get down to that ITA weight anyway.....since I also race NASA I had a .120 cage built (I don't want to get hit by some mustang or camaro or BMW or something with a cage meant to be hit by another miata). I was one of the few guys happy that the 1.6L SM weight was increased by 15 lbs....maybe now I can make that minimum!

So....who am I going to see at this 12 hour race anyway? It's usually a blast.

-Vick