how much money, what kind of mods would be required to make a 1st gen rx7 (probably non gsl) beat a 5l mustang(which runs 14's usually)?

Im assuming an exauhst ststem would be a good start(though i don't wan't something that's going to be annoying to the neighbors).

perhaps a nitrous kit?

porting?

lighter wheels?

your estimates on how much your reccomended upgrades would cost?

 

I have a streetable, emissions passing mid 14 second 1st gen! Its a 13B GSL-SE though.

Just for a little FYI: When I did the streetport I gained on average about a half a second in the quarter mile. When I did the direct fire conversion and readjusted the timing I also gained about a half a second average in the quarter mile! Do the direct fire!!! Cheap, easy power. The exhaust system I have is a long primary system from Racing Beat. I am actually in the process of replacing it with a custom made one but it is good for some power and the tone is very nice. Not loud either. get some cold air to that motor somehow. A light flywheel does some wonders too. Some people say that you can't notice it but believe me the aluminum one that my 2nd gen has did wonders for acceleration. I still haven't done it to the first gen though. Any lighteneing will help also. Go on a diet

 

errr.. what is "direct fire"? also, i heard light flywheels are bad for hilly areas.. its not thaaaat hilly here, but there are a few mountains around...

 

oh yeah, and just what is the 1/4 mile time of a stock non-gsl 1st gen?

 

thorin, he is talking about direct fire ignition if I'm not mistaken.

Check out www.hitman.hm/ported.htm

He has a mild streetport efi 12a making 178rwhp. He's put a lot of money into that car (efi, porting, standalone ecu) but I think it probably runs mid 13's.

 

13's with 178 to the wheels? I think not...rofl

 

I beleive the hitman is located in Austrlia which rates horsepower differently. Also this 12A happens to be sitting in a 750 KG Mazda 1300.
* The engine is RX-7 12A with 13B 6-Port centre plate for in-port injector capabilities
* Haltech E6-A Fuel / Ignition Engine Management with RA-3 Reluctor Adaptor
* Injection Perfection 2x50mm Weber IDA style throttle body
* 4 x 550cc injectors ex-13B Turbo Series 4
* Fuel rail and Regulator from a 13B 6-Port
* 13B Turbo Crank Trigger
* 3x Haltech Smart Ignitors (Bosche "008" Self Dwell)
* A 13B Turbo Series 5 LEAD Ignition Coil without the OEM ignitor
* 2x Bosche Coils (transformer style) for TRAIL side
* NGK BUR7EQ and BUR9EQ spark plugs. Same as Series 5 & 6 RX-7.

Seems possible to me, although I don't have a calculator handy.

 

Opps, forgot to mention that his car is a shade under one ton. However, I would think that a full interior 7 should be able to break into the 13's with a similiar setup with a more extreme streetport. It might require better gearing but I definately think it's doable.

 

ok if its under 2000 lbs then maybe its possible with an experienced driver. I totally disagree with it being able to do 13's with a more aggressive sp. How much do you think street porting adds? Not that much. Sorry it aint happening with full interior.

 

thats what im looking for right now, 14's. doesnt have to pass emissions. i want to be able to hang with the other honda's around here (i know that sounds bad, but im friends with a couple people that have REALLY fast honda's, one being a mid 13's car all motor) i figure, im going to get a dual webber or something of that nature, switch to electric fan, new fuel pump. then get a street port that will probably be done myself. but its going to be alot of money and time... which sucks. sometimes i want to get rid of my rex because of its lack of torque but i love her too much

what do yall think the quickest i could get my car on stock ports? thats the draw back, i really dont want to open up my motor and **** with internals right now. but i guess its something i gotta do

 

I think that people severely underestimate the potential of the 12a. If hitman can put down 178rwhp with a very mild streetport then I don't see why he wouldn't be able to put down 15+ more horsepower with an extended port. Combine that with better gearing I totally think that 13's are a possibility given an experienced driver.

 

what kind of carb mods would i need (essential) to run decent times? im thinking, with that, a K&N, carb mods, along with the mods i already have (racing beat header, high flow cat, 2.25" piping, ractive muffler, gsl rear end, short shifter) i think mid to high 15's would be possible. im hoping, i would be really happy with that right now, till i can afford some more stuff to push me lower into low 15's to high 14's. im really hoping i can get into 14's on stock ports.