Crusher
 

Some of you have already seen pics of our new enduro car. Just wanted to post a few more detailed pics for those that are interested.

The car is built specifically for the NASA 25 hours at Thunderhill Dec 3-4. It's an E2 car mapped from PTD. The VVT engine is purpose built, tuned exactly to the 148whp we are capped at for the class power to weight ratio.

The car's job is to gain the most track position for the least amount of fuel. Within that, the car must be able to run hard for 25 hours, at night, in the rain. It needs to be easy to diagnose and service. It needs to have the best possible safety equipment.

The car has no fuses or relays, instead relying on a solid state power switching unit, the Smartwire by Racepak. The fuse box you see in the engine bay is empty. Just an emergency spot to tap into hot leads in the engine bay should the need arise. The little box on the tunnel below the shifter is a Racepak USM (Universal Sensor Module) for our fuel level sender.
We were fiddling with the capacitor for the sequential COP conversion, hence the electrical tape (orange!) sliced open there. ESS Automatic fire system not completely installed in this photo.

More details on the build can be found on our blog; Behind the Wheel.

Center spot LED light bars not mounted in these pics

https://www.miataturbo.net/attachmen...ine=1320393096
https://www.miataturbo.net/attachmen...ine=1320393096
https://www.miataturbo.net/attachmen...ine=1320393096
https://www.miataturbo.net/attachmen...ine=1320393096

Car is a blast to drive. I'm glad to be part of the team!

Can't see pics.... :/

Its beautiful. Good luck with everything.

I wish I could do this!

Its kinda baller and I'm definitely getting a boner. Is it an actual NB2?

Effectively, yes. Rules allow swapping parts between NB1 and NB2 since they are both on the same line. You just have to replace whole assemblies like in SCCA solo. So this car has both NB1 and NB2 parts.

Fixed a bunch of stuff since you drove it. Misfire was bad cam angle sensor. New trans. Dash display all set up. Fuel gauge calibrated.
Bigger diameter steering wheel (350 from 330) gives a lot more leverage. New front subframe fixed alignment issue so we could raise it up to get proper bump travel and more camber. Yup, it's fun to drive!

it's missing something vital.

Beautiful car, Emilio. Your pictures show extreme attention to detail.

Are you running ABS?

I'm also really curious about your motor. Are you going to share your build plan at some point? I'm curious what made 148hp, and on what dyno... and what (if any) combinations you found made more power. I assume you probably don't want to give up certain info before the event, and that's cool too.

ABS for those 5am, rainy moments where slight of mind meets racecar driver.

Cool car, needs more orange though.

enduro car means inboard side mirrors. nice.

now about those aerodynamically-challenged 6UL wheels... time to make the 0CD (zero coeff of drag, not obsessive compulsive disorder) wheel design...

is this the vvt car you called me about? are dyno plots still top secret?

:brain:

That is the most simple engine bay i have seen in my entire life. looks like a dream to work on.

Yup, ABS. No brainer for the rain. Also reduces of driver error flat spots in the dry. About .5- .7 sec slower at sprint pace but we almost never need to push that hard in enduros. The abs can be toggled off by the driver and has a brake bias knob next to the radio (not in these pics).

NASA performance touring has two classing options. One which assess a points value for every modification with a 19pt cap to stay within a class. The second classing option allows builders to submit dyno sheets with actual whp and skip adding up points for each mod. When dyno classed, you have a nearly free reign for the engine as long as you stay under your self imposed whp cap. I can tell you that Crusher makes good torque with a broad powerband. Think WRC :)

We are not a big time pro team but our approach to the challenge of endurance racing is. Thus, we will keep some of the more innovative details of Crusher within the team until we have reached our racing goals.

Crusher is a bad bitch......Very nice indeed.
If I understood your wrc comment correctly than this thing probably has the best n/a miata torque curve imagineable

I have seen the dyno plot for this car.

I was impressed.

That's all I'm allowed to say. :D


And yeah, it is a very well put-together piece of machinery. This is the car I did some minor tweaking on the ECU of a few weeks ago, and even though it was still in pieces at the time (no doors / windshield / fenders / etc) you could really tell that all the folks who wrenched on it had done top-notch work. A lot of high-dollar race cars look great from 15 feet away, this one looks great up-close as well.

I heard it will make you rethink your entire exisitence.

Very nice, and you have my best wishes for competition!

Cool stuff!

What AFR's are you running?

I always thought modern day ABS was faster then not having ABS. Given that you guys have a brake bias valve so brake balance is not a issue, how does the ABS make you .5-.7 seconds slower?

What will happen to brake cooling?

I guess you should use VVT to limit topend power to the rules.