Crusher was built by our resident ME, John Wing (Satisaii) and planned by yours truly. John and I brainstorm a few times a week on the car, solving problems and figuring out how to implement my hare-brained ideas.

I tried a set of 4-piston calipers in the front with 1.75" pistons with the stock master cylinder. Way too much pedal travel, and that was with the stock rear calipers still in place. For pistons that large the master piston dia has to be larger to displace enough fluid. So the hydraulic advantage goes away, and a booster is needed again.

I've got a 1-1/8" MC that I just haven't gotten around to hooking up, yet. The math says that I'll reduce my pedal travel by a meaningful amount over the Wilwood 1" MC. I'm hoping that it brings the boost ratio back in line to make the brakes less sensitive, too. Won't get around to putting it in and trying it until Jan/Feb, though.

Cheers,

Dean

Wilwood makes both the Dynapro and Dynalite in a 1.62" piston. I wonder if that might be a better match with the OEM booster when paired with big rotors. A friend has a V8R kit on a very light NA and his pedal is too sensitive.

To better take advantage of the special points config were running at T25, we have swapped the 2 piece Sport Brake front system for an 11" Wilwood Dynalite (1.38") front with our 2 piece directional rotors. That will give us faster pad swaps and longer pad life.

Has anyone found a good master/booster combination for the V8R kit?

Enough people concerned that it's probably time to start a new thread so others with the same questions can find it.

There is some discussion in the miata.net 'engine conversions' subforum if you go look there. IIRC 'perryrace' and others who are racing V8s with the V8R BBK have discussed it at length in several threads.

I very much look forward to seeing everything that is done to the motor once the race is over. That is if we are allowed to find out. From what little info I have gained, it sounds like a beast. I am also very curious to see what power it makes if/when you finally do a completely unrestricted run on the motor.

Brief look at the ESS fire suppression system



Brief look at the racepak system in the car. I forgot to mention in the video that the Racepak reads all the data from the MS3 ECU via a Racepak interface module.

Very cool. Any more details on the fuel level sensor? How does it work while driving? What is the accuracy at various levels of fuel in the tank?

I believe the term is "You betcha" :giggle:

What about the water pressure sensor? I had one but it would display that I have 25-30psi all the time - even with the engine off for several days, so I took it off. I had mine on the hose right after the thermostat.

Sounds like it was broken.

I doubt it - it was one of the solid state variety and is working happily for my oil pressure right now. I was thinking that maybe you don't a pressure sensor for this application, but rather, a flow sensor instead.

http://949racing.com/Racepak-liquid-...-sensor-2.aspx

Maybe I'm asking too many questions, but do you actually see a pressure drop with the engine off?

Of course

I didn't know you guys where such huge wrestling fans. I'm sure he would be honored. This was the first thing tghat came up after your Smartwire video was over.




On a serious note, where can I find out some more on the fuel level sensor. Did you simply attach this to the oem assembly and it sits in the tank? It sounds interesting. I may be using the IQ3 on a kit car build and that is one of the things I am trying to figure out.

I didn't even think of the non foam fire system going out the windows, I may redo the system in my spec car now.

I was going to ask if you had your analog sensors tied into the MS3 and then the racepak read off that. But this answers that.

Think about water/coolant behavior related to temperature and pressure. Direct correlation, even negating the activity of the water pump. Your gauge must have been busted.

I'm assuming you guys dyno reclassed the car. Where did the reclass land you? What base class and weight (and max power and torque numbers if that's not still top secret)? The first post in this thread says 148whp but that means comp. weight of 2109lb to be maxed out in PTD.

They don't allow Miatas anywhere near the 14.25:1 ratio for PTD/TTD. Those numbers are only guidelines.

After turning it off for a few days, were the hoses hard to squeeze?

E46 BMW's are another story. Greg Greenbaum will not class a small tired car with a favorable lb/hp ratio into what the books suggests a reasonable classification, which he's stated on more than one occasion. My research shows about a 2.5% hp/lb penalty for us Miatas. Thanks NASA.

+1. it is ~15:1.

pls understand Miata/MX5 took 10 of possible 18 podiums at T25 according to NASA.
in reality. one of the class is ESR, Miata can't even run there. another is the top tier ES class, more of prototype and Cup car class, Miata don't run there. so basically, Miata/MX5 won 10 of "possible" 12 podiums.

so no, I don't think weight/hp ratio is going down anytime soon..:giggle:

Not sure what you're complaining about. In sprint races, we have a few hp to spare. In the 3 hr enduro's we have a lot to spare. In the 25, we could have spotted our competition about 15whp (>10%) and still won even if they had zero problems.

Notice how many Miatas win NASA classes in sprints, TT, 3hr and the 25?
If Greg will give us the same few % lbs/hp penalty for an E1 or E0 Miata, we'll happily accept it.

How about a turbo Miata built to more of GT car spec simi tube chassis running on GT2 size slicks, could you run that in ES? I’m not that familiar with NASA rules.

Bob

^ I know that this is MT, but honestly to be competitive in ES the car would need at least 350-400whp, and over 25hrs, I don't see a 400hp Miata engine being reliable enough. I know that there are some super reliable engines on here, but I doubt that you could go in with any sort of confidence that the motor and trans would hols up for the full 25. If you wanted to do an ES T25 car I see an LS1/2 motor being the way to go. It wouldn't even break a sweat at 400hp, and as long as the oiling system was improved upon, I would expect a GOOD swap job to last the 25. And having Keith teamed up with us for this one, I could see FM and 949 doing a joint car.

That is purely my opinion though, and honestly I don't know all that much about turbo Miatas. I only signed up here because there was a good discussion going on, and I had run out of views.

Honestly I think Thunderhill is about as easy as it gets on the powertrain for a turbo car. The track is mostly about cornering speed and maintaining speed. Just need enough power to sufficiently overcome aero drag at high speed I’m guessing 300 might be sufficient to be in the ballpark for lap time with enough extra grip from tires and aero work. It aint gunna happen on 225 DOT tires though.

Bob

I think I've bitched and moaned enough that I've effectively cried a river that I can sail down next season. I was pretty pissed all season to take second to a guy 5-10 seconds faster in TTB. I suppose my issue is not with the points against Miatas because we had a tight-pack in TTB this year if you exclude the car that didn't pass TTB tech at nationals. When you factor in the 20+ tires he won last year, in a car that didn't make it through national's tech, it rubs salt in the wound.

Maybe the formula is right for Miatas, it's the E46 M3 formula that's flawed. I'll shut up now to not thread drift.

we have been on the wrong tires (not on hoosiers) or not driving good enough. If that e46 had been at TWS last week i would have spanked him.

Miata drivers might be getting a little too cocky. in ES, you will be racing against these:

http://www.gotbluemilk.com/web111203...es/image9.html
http://www.gotbluemilk.com/web111203...s/image12.html
http://www.gotbluemilk.com/web111203...s/image18.html
http://www.gotbluemilk.com/web111203...s/image13.html
http://www.gotbluemilk.com/web111203...s/image13.html
http://www.gotbluemilk.com/web111203...es/image7.html
http://www.gotbluemilk.com/web111203...s/image10.html

most of them have air jacks, carrying 44 gallon tanks.
E0/1/2/3 have similar rules, like only 10 gallons per stop, no air jack, no pressurized fuel delivery. ES is pretty much open.

6 second pit stops for 30-40 gallons and 4 tires. E0 is a huge step. ES is a 200K Miata and that ain't exaggeration. For that coin I would buy a few year old GT3 cup car for 75-90k, spend maybe 50K getting in prepped, a few gentleman drivers writing 40k checks and a corporate sponsor to cover the rest.

You're in TTA, lol.

Not really, he runs TTA not to get hasseled.

Ok maybe I said the wrong class. The prototype sports racers are ESR though. And it looks to me like the car I want to build would only fit in ES based on the rules however the other classes all pretty much require DOT tires.

I would definitely be up for helping out as crew for you guys at the 25 next year.

Bob

Exactly. Until someone finds an extra 1/4-1/2 million dollars that they want to make disappear, I would guess that a competitive ES car is out of the question. So with that in mind, is there even a point in running a faster car? If we solved the mechanical issues that stopped crusher from winning in class, (which would be easy) it could have completed an extra 10-19 laps depending on how many mechanical issues we fixed. That would have put us potentially as high as 7th overall. Even as it finished, we could have put Enzo in any class other than ES and won. (Though that E0 #100 car probably would not have sat in the pits as long as it did had it actually been racing someone.)

So really the question must be asked, is more power even really needed. I think that the reason the E2/3 cars do so well compared to the E0/1 cars is that they are so much better on fuel/tires/reliability. So running an E0/1 car would probably cost a ton more money, and likely not end with a better or more impressive result.

The only realistic result that I could see would be getting a top 5 or possibly even top 3 overall with a very well built E0/1 car as long as it somehow made it through without any mechanical issues. As for an overall win, I don't see and "privateer" team taking down Mercer. (they beat everyone by at least 48 laps) Though I would love to see the chevy C6r team come out just to piss off the Mercer boys...

Whatever the future brings, I am excited to see what happens, and hope to play a role next year as well.

Hell, they could just run your car on a more mild tune, and as long as everything held up for the full 25 (which we have no reason to assume it wouldn't) it would be a force to be reckoned with. It certainly would have a good shot at pole position in whatever class it ran outside of ES.

BTW, who the fuck are you?

^ I was surprised that this wasn't the response that I got when I asked if they needed/wanted help with the T25...

My name is Chris, and apparently I fooled everyone into thinking that I know a lot about Miatas...

He's one of the two people on the team hand picked by Savington to be his point guards when it came to spinning wrenches. 4 minute hubs swaps on a smoking hot hub (literally) at 1 am in a parking lot on about 4 hours sleep in the last 30 anyone?

After seeing what Chris has seen, I'd say he's able to make some pretty well educated guesses on what might work for a T25 car.

Well, I had to ask. He could have been the donut boy, warm towel guy, weird bathroom cologne guy, gt live guy...

Wait, I got to sleep? When did I miss that? IIRC I sat down in the RV to get an hour of sleep, and as I sat down my radio exploded with talk of brake failure, and the forthcoming of the apocalypse.

They might of well have made that my job based on what they new about me coming in. I don't think that I had met a single person involved with this before I went down to 949 to introduce myself, and then help a tiny bit with the cars before the race. I think that I met Emilio, John and Sonny 3 times each for a couple hours before the race, and two months ago none of them had ever heard of me. Bundy and Hyde might know me a little from my time up North, but other than that, I doubt that anyone in the Miata community could have told you my name. So the "Who the F*** are you?!" is not really without merit.

Sounds like you did good things for the team. You should see Billy Johnson post on the Boss 302 forums under the name "stuntman".

stuntman: we run 3 degrees of front camber on our car

mustanguy67: sure whatever buddy you have 12 post, bob with 4000 posts and crappy lap times says 1.3 degrees is optimal

Chris is a stand up guy and a good shoe but he needed more than 100whp in his miata when he was in Seattle. Even at that, I couldn't keep up with him on our local cart track in my fatass MSM...

It was probably those TR wheels lol :)

Would love to, but you should be a.driver
think about it.

hahahahah. Link?

please. I could use a good laugh this morning.

Looking at the rules it looks like the only way to run the type of Miata I want to build on slicks other than ES is to build it as an SCCA GT3 car which could run in E0. Meaning no turbo and stock displacement. When I was looking at that before it looked like a Miata would not make a great GT3 car. Weight advantage in class for the low displacement and hp would be minimal like 100 lbs and you would be lucky to get 100 to 150 less Hp than the competition.

Who knows though the first incarnation of my future race car might just keep the turbo off and keep it GT3 legal.

I’m really itching to go racing though. The few chump car events I have done just have me thinking about it constantly.

Bob

I would be down with that.

Got to get a race license of some sort. I need a car to go wheel to wheel racing in and get some races uner my belt other than chump car.

Bob

It's funny that we know Chris way up here as well. I think I met him first doing car lap days at the go cart track at PGP. Nice guy. Doesn’t quite have the experience some of us have from blowing turbo stuff up on the track for the last 10 years but he seems to be quick to pick up and Identify the information that is critical from those that have.

Bob

If you guys build a E0 car Bob could practice by going 90mph on the freeway and just keep changing lanes to dodge cars :)

I would say that is an accurate statement. I certainly do lack real world experience, especially when it comes to Forced induction. I would say that my best asset is that I learn quickly, and have a brain that does well with problem solving, and formulating strategy.

I certainly wouldn't pretend to be the Miata master mechanic that I think I fooled a few people into think I was. Tires, brakes, and bearings are easy, just be glad you didn't have to ask me to do any real mechanic work. It would have gotten done, but it also would have taken a bit longer.

Hopefully someday I'll have the experience to go along with all the BS I am currently selling...

I'm jealous you were able to partake. That's definitely an experience!

Congrats to Team 949Racing/SuperMiata and the crew! I've been following this throughout the weekend. I would have loved to help or even be a part of it, but it seems all the know-how and talent are already on the table.

you need 8 races minimum before one is allowed to race T25. NASA might even change it to say 10 races.

I think that the person to be jealous of is Sean Johnston. He got such an opportunity with the GT Academy, and truly showed his skill behind the wheel. Since then doors have been opening for him, and as they should. He is an incredible driver, and in the coming years I expect to see him getting paid good money to drive. He had his first night driving experience with us, and he just killed it. He got in shortly after lost P1 due to mechanicals, and made up 3-4 laps in his double stint. Not too bad for his first time ever driving. I must admit that I had been a little skeptical when I heard that he was a last minute pickup for the team, but after his first practice session I was glad that he was on our team, and as the race progressed, I was thrilled that we didn't have to drive against him. Though really the same thing could be said about all of our drivers. They were all amazing. It is funny that the drivers have tried to give credit to the crew, because we all saw it the other way. They got us an 8 lap lead, then that turned into trailing by 11. Their had work and good driving kept us motivated to keep turning wrenches. If the first two drivers in the cars hadn't made up between 3-4 laps each, I think that the rest of us would have found it hard to find motivation.

Sean's the real deal, for sure. He and I met at the Ford Racing Mustang Challenge Driver Shootout in 2010. At that point, he had only some karting experience and a Jim Russell course on his driving resume. His first time ever driving a sedan on a track was AT the Driver Shootout and he was matching/beating my lap times by the second day. A lot of young drivers try to just make it in racing based on talent alone. Sean's got the talent in spades, but I think what is going to make him successful is his drive to do the hard work, too. He comes to any opportunity completely prepared.

When he contacted me about joining the team, we were ALL over it!

Cheers,

Dean

Yea I just read that don't think that will happen for a few years yet at least.

Bob

^ I don't think that they need to be NASA races, but something of equivalent nature. You could just build a budget SM car, and run that next year. Between the Oregon races, and the ones at PR, I am sure that you could get 8 races in between now and then.

Heck, just buy a used SM online for $8k, and run that at the big tracks, and the money you save on transmissions would pay for the car...:yippee:

Either way, it would be great to see you again, and I am sure fun to work with you. That is, assuming people don't realize how annoying I am between now and next year, and that they let me come back...:ugh2: