fmcokc

So, would this bring up safety concerns at a tech inspection? I mean technically you are no longer protected from the fuel tank with a metal bulkhead. I guess you line the backside with aluminum tape to satisfy tech regs.

Twibs415

iTrader: (8)

NASA 15.4.1 states a “solid” bulkhead. But does not mention what material.

HarryB

Guess you can add a foil tape on the back and/or build it with flame retardant resin.

damir130

I never really understood this rule, doesn't the chassis count as a bulkhead? Is this similar with other cars? e.g. that the floor of a hatchback does not count as a bulkhead?

afm

iTrader: (3)

The fuel filler pipes/hoses run through the trunk. The conservative interpretation is that you should have a bulkhead protecting you from those.

rikgray

What is the lightest race prepared, road race ready, Miata ever?

emilio700

iTrader: (3)

What class has the lowest min weight? Probably SCCA FP at 2075 comp weight. That's an NA6. I think a full Runoffs timebomb B6 makes around 160whp.
Lighter Miatas have been built for autocross and time attack.

Why do you ask?

Joe Perez

iTrader: (8)

Depends on your definition of "race ready" based on the rules of the racing series you're referring to.

The absolute lightest-weight Miatas all look something like this:

rikgray

SCCA GT2 Miata 1950 lb. at finish line with driver. 2.5 MZR engine

Can it be done with a tub car?

emilio700

iTrader: (3)

Yes. Won't be cheap though. You'll need some tube frame extensions on the tub and a fully composite body. You have some major advantages in the GT ruleset but to do it cheaply you could just start with an old E production car as a base for your GT2.

cordycord

iTrader: (2)

About 1,200...

arbinshire

Something new on the Horizon Cord?

cordycord

iTrader: (2)

Nope. Old as dirt. Prototype of the Catfish frame. Still have it, and was thinking of making it into a cone-crushing drift hoon.

poormxdad

Gents,

Can I remove the seatbelt reels without removing the roll bar?

Thanks,

Wingman703

Nope. Rollbars gotta come out to have enough room.

poormxdad

****. Installing that rollbar is still the most frustrating thing I've had to do to the car, and that was a dozen years ago.