1950 pounds.... Finally weighed project autocrosser/road race car!
 

Well I raced at a NASA event this weekend and was able to weigh my car.

1950 pounds and that was with two seats and an Autopower roll bar.

I still have weight to pull out of the car. More stripping of stuff. (not much more), and I want a carbon fiber hood.

My goal is to get into the 1800's. I would already be there if it did not have a roll bar, but hey...I need safety stuff.

Unfortunately now i have to add weight back in strategic places to get up to weight for the class I want to run. This is OK, because now I can put the weight where I want it!!

Nice! How much air did you keep in the tires for the scale? Let 10 pounds out of each tire and you'll almost be there....Seriously though, that's one light car!

Do you have a build thread floating around here somewhere with some pics?

Here is the link to the most recent work. It also has links that show the cars past.

https://www.rx7club.com/build-threads-293/project-cheap-autocrosser-being-reborn-another-racer-986830/

that's bloody awesome!

Wow, I think mine was 2280 with me in it, which would put it around 2110. So you removed a couple hundred pounds more than me, not counting the cage. Where the hell did you find that much weight to pull out? You fill the frame rails with helium, or what? :)



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Ha!! Kentetsu, click two posts above and see the link to the latest weight reduction. Kirkey seats, Braille battery, aluminum water pump and housing, lexan windows, panasport ultralights, no side glass or door internals, absolutely no interior or dash and gutted wiring (custom harness)

Funny thing is, I am STILL running the "oh too heavy" racing beat street port full header and exhaust system!!

the NASA scales live a hard life.... but 1950 is LIGHT

I am happy. I think I can get her down to 1875-1900. Then I can add the weight where I need it.

With me in the car, the right rear weight is too light. I am guessing I can add weight to that area to better balance the car.

SWEET car, adding lightness. I may check it out @ NASA some time. IDA is a better carb than DCOE especially for top end.

What class would a 12a bridgeport put you into? I have such an animal and am contemplating wiping the dust off and taking er out.

Bring it out!! Right now I am racing HPDE 3. I am building the car to either run TTE or TTF.

You can run anything you want for HPDE!!!

We will be racing at Buttonwillow in about 6 weeks!

BTW, if I go TTF I will keep the stock carb. If I go TTE, I will run some kind of Weber!

its nice actually, TT (time trials) and PT (performance touring) have the same rule set, so uncle jerry lets you run both.

with a ported rotary you skip the whole class sheet, and they class you based on hp, weight and some magic. i forget but i think TTC/PTC is around 10.5lbs/hp so you'd be about there.

ideally you want to run a larger class, as the prize is/are hoosiers.

Unfortunately I don't have all the safety equipment to run PT.

I really want to run TTE, but there is some stiff competition there. And :scratch::scratch::scratch: the class is supposed to have "stock" (at least non ported) engines, as a ported engine would put you WAY out of TTE. SO why does the fast guys have engines that go brap brap brap....when mine goes hmmmmmmmmmmmmmmm...smooth as a Lexus!!?? I don't get it!!??
I don't mind stiff competition, but I really want to be on a level playing field!



TTF might be a better place to start because my engine is bone stock. I will have to add some weight and run smaller tires than I want to, but I feel I can be competitive in TTF.

if you can do TTF, it might be a good place to get your feet wet. although you should look at the lap times in each class. in our region TTE is competitive too so the difference in laptimes between TTE and TTC is fairly small

I kinda agree. It might be good to start in TTF.

What region do you race in?

Also, maybe I don't understand the rules fully, because I knew you could add aftermarket carb, headers, etc... but i did not think you could port the engine without dyno testing the engine and reclassifying accordingly.

Also here locally, yes, TTE is running as fast as TTD and TTC!!

we're in norcal. yeah you're supposed to dyno and weigh in with a ported motor, so i dunno maybe they did?

Yeah maybe so.. Hell I can make a perif port 13b make 100HP by jetting it wrong, setting the timing 40 degrees out, and only revving it to 5000 RPM!!!!

lmao! me too... i even got it to shoot fire at my friend....

Ah, yes I did HPDE3 for years in the car. Lots of good memories. I know a few years back I looked at the PT rulebook and they bumped bridge or periph rotaries out of PT entirely and into some ST class. Has that changed?

I might drive the REPU out to Buttonwillow to spectate, say HI. The weather would be perfect. And check out the competition. You know Tom @ 7sOnly can make a sweet cage right?

As for the brapping stock rotaries, adding more timing and running rich will do that but I have a feeling there is some porting going on. Years ago I talked to some ITA owners and they all had streetported their front and rear plates, and rotor housings. Since it idles on the intermediate plate theres much less brap. And of couse some just all out cheated and ported all 6. I guess there was not lollipop testing.

Anyway keep up the good work and I may be out there some time. Brad

Yeah come out!! I will be racing HPDE 3 again.

Buttonwillow April 21-22!!! Be there!!

You know, I am not accusing anyone of cheating. I just wonder about the brap brap when mine is hmmmmmmmmmmmmm... I know I will play fair and that is all that counts! I have decided to run TTF since my engine is 100% stock.