flier129

iTrader: (7)

Lol, I love his reaction to the car. I really want solo storm :(

I talked to the guy a little more about the numbness, he actually admits his STS car(750/425) felt the same way when he tested out some 205 rivals, lol.

Leafy

iTrader: (1)

I'm not terribly thrilled with solo storm I really wish I had waited another month before getting it because Autosport Labs: RaceCapture/Pro Telemetry and Lap Timer | Megajolt Programmable Ignition came out about a month after I bought it, and after buying a mount and a GPS receiver there wasnt a large price difference. Of course I'd have to buy a separate video camera and overlaying the data on the video wouldnt be as easy.

tpwalsh

Yep, I'm much more interested in the Race Capture Pro. I'd much rather pull RPM, Speed and Throttle Position and integrate that with my video, than what GPS can give me. I have an old MaxQData and it was ok, but not spectacular. Video + throttle seems to give a better indication of what's really going on.

Ski_Lover

DP weight limit w/1.8L is 1924 lbs. It would be awesome to have a 1.6 like this in a 16xx lb Miata.

I already had a built 1.8L when I decided to chop the A-pillars and go DP. My car has Penske shocks, Delrin bushings, OSG Diff, is rear weight biased and at the weight limit with ballast. I PAX in the top five, straight time in the top 10 regularly in our SFR SCCA events (180-220 participants, lots of Nat. Champs). More often than not, the car is fastest outright of all production based cars (and F125, AM & BM formula cars regularly bested). All this and the motor is not fully prepped and I'm on A6 Hoosiers (275/35 R15). Avons will make the car amazing.

Not trying to toot my horn as much as wanting more folks to choose this DP path: there are too few of us, and its probably one of the best bang for the buck "Prepared" class cars.

tpwalsh

Craig,
According to the rulebook, you're at 1908 (1.06 *1800cc) unless I'm mistaken. I know it's not much, but every pound counts and all that.


Also, I'm soo glad I'm not ready to drop in a real motor yet, otherwise that would be a VERY tempting motor!


Yep, DP is a complete hoot. I'm still having motor tuning issues. (mostly due to not being able to get to the dyno yet to really hash the tune out). Even with those issues the car is ridiculous fun and I'll should be fighting for the fastest non kart for only $2500-$3000(and many many hours) invested, with basic hand tools.

flier129

iTrader: (7)

That's an insane 1.6 lol. I wonder how many hours you can get on it? Or I suppose you would do it by number of runs with auto-x.

Ski_Lover

DP weight Weight formulas (lbs):
Engines with displacement less than or equal to 1667cc: 1.06 x displacement (cc)
Engines with displacement greater than 1667cc: 0.91 x displacement (cc) plus 250 lbs

tpwalsh

Yep, and before that is
and the miata listing is this:

I believe this means that we need to use 1600 and 1800 as our engine sizes.

tpwalsh

I'd probably "overhaul" that motor every year and a half or ~15-20 events. I'd bet it's a 10 hour motor.

Ski_Lover

I'm fairly certain the official displacement considered for the Miata 1.6L is 1597 cc, and the 1.8L is 1840 cc.

So a 1.6 weight limit is 1693 lbs, and a 1.8 is 1924 lbs.

There's a web app for that here.

tpwalsh

I think the official numbers are 1600 and 1800. I'll try and get the exact line out of the rulebook that mentions to use "listed engine displacement" or something along those lines tonight. <shrug> I could be entirely wrong, but I'll take those 3lbs if I am.

guttedmiata

XP so you can boost it. You're not gonna beat the power to weight ratio available there.

Ski_Lover

No doubt XP's a great path for a TTOD car, and I must admit I've given it some thought. I've had zero motor or drive train issues but could definately use another 100 hp :-). On the other hand I've seen so much $hit blow up in XP (and Mod classes), I'm really not interested in ever having a motor and drive train that's so over stressed. The other issue I have with XP is the weight limit is so low that most examples I've seen would not be safe for the track, doors are mere skins, use of roll bars rather than cages, lack of other safety gear,...yes XP's are single purpose cars, but I'm happy my car is in most aspects an E-Production Road race car that just happens to be set up for DP.

Given how fast CSP & DP Miatas are, I think some of my XP friends could actually go faster if they de-tuned to under 300 whp (and save a LOT of headaches). IMHO an AutoX Miata should be devastating enough at 250-275 HP, in the sweet spot optimizing performance and reliability.

Seefo

iTrader: (5)

looks like a fun course. looks like you locked the rears up and counter steered...but I am not sure.

bahurd

iTrader: (8)

I'm moving more into Solo racing and one of the things I'm about to install is a MS2 (Reverant built). The plan is/was to replace the stock ECU.

Does this negate running the car in Street Touring class? I see section 14.1.F (allowable mods) mentions "piggyback" alternate ECU.

It also mentions "stock sensors" but later on allows "fuel controls" to be non-stock (or so as I read the rules).

Or, does this now mean the car needs to be in Street Prepared?

Probably doesn't matter as I'm not experienced enough to be competitive in either yet But, given the other mods that have been done Street Touring is where it fits currently.

Just asking and thanks.

Leafy

iTrader: (1)

You need it setup as a parallel install and you need to use the MAF to tune. Both of these things as possible with an MS built by reverant.

bahurd

iTrader: (8)

That's the way I read it. PITA though to have to set it up that way. Can you just add a Boomslang and snip the stock ECU outputs (I have one unused from a prior project)?

Or is it even worth doing (parallel) and just take the bump in class (standalone)?

Thanks for the input...

Leafy

iTrader: (1)

Well how serious are you? If you're just out there to drive the car and have fun, just go into street prepared.

Technically according to the rules you really only need the stock ecu hooked up enough that the OBDII code reader works. But you still can only use stock sensors.

bahurd

iTrader: (8)

Well, if I was that serious I'd be much quicker than I am.

As I read the Street Prepared rules the stock ECU can be replaced outright as well as the sensors (MAF). Or am I misreading them?

Leafy

iTrader: (1)

Yes the standard MS install that ditches the maf and stock ecu is legal in SP.