Icemastr

iTrader: (2)

Hi everyone, soon I am hoping to become a member of the RX-7 engine community but in kind of a slightly different way. I am in the final stages of planning in putting a 13B Turbo engine in my 99 Mazda Miata in hopes of creating a quick agile and competitive drag/solo track car. I love RX-7's and rotary engines and my girlfriend had to have a 2 seat convertible and she fell in love with the miata so we are getting the best of both worlds. Right now I am just making the final decision on where to order the engine from, 87-92 Turbo engine, I was told this was the best idea because better reliability and ease of getting parts for the engine, the mechanic who is going to be working with me on this has about 50 or so RX-7's of all kinds, he builds race RX-7's in Tacoma, WA. Plus deciding on what to do for a transmission, wether to stay stock and upgrade clutch or put in the Turbo II Ribcase. Hopefully we can make it all work, anyways I look forwards to having a fire breathing miata here soon. Any tips on good places to buy an engine would be appreciated. Also I was wanting to find out what 'inexpensive' minor modifications I could do to get more HP up suchs as exhaust, air intake, porting. How much HP would I be able to get without upgrading the turbo and adding a FMIC and such. Even at 200-250HP the car will fly, weighing only 2300lbs. If we can make it stick to the ground (low to high 13's?) Planning on getting the car more into the 400HP range if its feasible still having a good driving car thats still streetable. Also what (year)rotary engines are carbureted?

-QuentinC

Ni5mo180SX

I picked up my jpsec from Japanese Engine Land in Garden Grove, CA with warranty. PM me if you want more details on them. But I believe theres a couple importers in your area also.

dr0x

1st gens were carb'd. You can carb a 13bt, however its a bit more expensive. Id just go to a haltech. Search for "jspec engines" and Im sure you will find a long list of sellers.

Evil Aviator

Some links that may be helpful:
http://fc3s-pro.com/sitemap.html
http://members.aol.com/solomiata/index.html

This is not possible because those two types of racing are mostly mutually exclusive. Choose one and stick with it.

The 93+ engine is superior in most cases. However, if you want to save some money, then the 87-88 or 89-92 is fine. You should probably just choose whichever engine your mechanic likes, since it looks like he will be the one who has to deal with it, anyway.

Your stock transmission should be able to take a stock 87-92 13BT for road racing. Otherwise, you will probably need to upgrade to the TII ribcase. Note that the TII transmission has a different sized flywheel and clutch, and takes a larger driveshaft yoke. You may want to consider a racing transmission if you are serious about that 400hp mark.

All 12A engines were carbureted, and all 13B engines were fuel injected (including 1Gens).

BDoty311

Rotary engines respond best to "air mods". For example Racing Beat offers an exhaust system that is dyno'd at adding 59 hp. You will need to get a Fuel Cut Defender to run this exhaust though. So intake and exhaust co add a significant amount of HP if combined with the right parts.

Icemastr

iTrader: (2)

In response to Evil Aviator, ok maybe I shouldn't say competitive in drag/track. Maybe I should say I want a car that halls ***** in the 1/4 mile, will blow by unsuspecting WRX's, Hondas, Corvettes, Mustangs, etc., a car that will be fun to drive around but still be able to take it to the drag strip maybe put on some slicks and turn out a few good times at the strip a few times a year. However I want the car to still handle good and take it to an autocross event or to and embarass myself with terrible driving skills. Is that doable? My mechanic seems to prefer the the 2nd gen engine for reasons I said before. What are the plusses about going with the 3rd gen? Thanks for the info.

-QuentinC

Evil Aviator

Hehehe, yes, you can race anything you want, but just don't plan on taking a lot of trophies. You may want to check first, but I think your car will be in E Mod autocross vs. the killer Lotus 7 kit cars. At least you will have fun blowing by the Hondas on the street. My 20B FC will not be competitive in any of the few race classes it fits into, either, but then again it is nice to be able to build a car based on my likes rather than on some stuffy race rules.

http://my.engr.ucdavis.edu/~pko/13BTvs13BREW.html