ok as you might know from other thread im trying to put together a rx7 that will have a 12at engine. i want to know if it will be able to keep up with the wifes car and hopefully beat it. only thing i know right now is factory engine has 160-165 hp and i am going to add an intercooler (didnt have one from factory) do a custom exaust prob 3" and do some form of standalone engine management. others that have done this say about 200 hp came from setups like this. the rx8 is just stock but has 238 N/A hp so its not as reactive as some off you know but it has more i know that my t2 rx7 with just a rb turbo back exaust walked all over it. so if it wont win help me come up with a winning car without putting low test in the rx8 and putting a bunch of stuff in the trunk?

 

FB with 12AT > Stock RX-8

 

or i could just paint mine like yours and let u race her mabe she wouldnt notice?

 

How much do the 8s weigh? I think you could get the 12AT well past 200 hp with a turbo upgrade and weight reduction down to 2200 lbs would leave the 8 at home, wondering what happened.

 

the 8 is 3,809 pounds its loaded with rear spoiler aero kit, 18" wheels, sunroof. mine has weight to its advatage for sure, i have no roof, manual windows, my new wheels are 14" light weight volks and i cant find a spoiler for less than 300 that doesnt need work. plus i will not have carpet and insides in when i first get it running so weight will on my side. so hope thats enough, but with your imput trochoid &

 

Directfreak. im feeling better about my chances!

 

I have a CP Racing whaletail that I will be getting rid of if you want something that big. I have some minor repair to do on it from shipping and thier poor finishing. This one needs to molded to the body, it is not a bolt on. $150 plus shipping and it's your's.

I didn't know the 8's were that heavy of a pig, you should be able to kill it nicely with 200 hp..

Post pics of the 12AT when it's in and running.

 

Sorry. DP.

 

I don't think you will need much to take the 8. Mazda "exagerated" on the HP on those cars. I believe they put down about 160-170 HP to the wheels. Your car is much lighter, so you shouldn't even need that much to win.

 

[QUOTE=mazdadude7]ok as you might know from other thread im trying to put together a rx7 that will have a 12at engine. i want to know if it will be able to keep up with the wifes car and hopefully beat it. only thing i know right now is factory engine has 160-165 hp and i am going to add an intercooler (didnt have one from factory) do a custom exaust prob 3" and do some form of standalone engine management. others that have done this say about 200 hp came from setups like this. QUOTE]

The 160-165 hp quoted is the JIS measurement for the two 12AT engines from Mazda. In SAE tems it's around 145hp flywheel. In real terms this is about 120rwhp.

A 12AT engine with bolt-on modifications including FMIC and digital ecu will achieve 190-200rwhp depending on the local legality of the exhaust set-up. This is based on retaining the stock Hitachi turbo. Adding a T04 turbo willup the power and then it's a question of the level of porting and matching with yet larger turbos to give a reliable 350+rwhp.

A 12AT gen 1 with some modification will beat a stock RX-8, which is a luxury 2 door 4 seat car with only looks to make it appear to be sportscar.

 

I doubt very highly that your 8 somehow gained 800 pounds by adding an aero kit considering that the fully loaded version tips the scales at 2970 pounds.

Yeah, Mazda did such a good job on the disguse that the RX-8 handles and drives every bit as good as the old Gen 3 RX-7 and is currently dominating its class in SCCA.

I'll never understand the elitism that some 7 drivers have when it comes to the 8. It's quite literally the best sports car for the money today.

 

at the shop, we've got a slightly modded gsl-se (exhaust, intake, missing a/c and some interior), and a stone stock base rx8 6 speed.

we actually wanna race em, i think it would be pretty close

 

you could always stick a bag a sand in the wifes trunk, oop's

 

I assume that you talking about in a straight line?

 

I voted for the RX-8 because your wife is probably a superior driver.

 

MosesX605 "I doubt very highly that your 8 somehow gained 800 pounds by adding an aero kit considering that the fully loaded version tips the scales at 2970 pounds."

its also a shinka edition which also includes injected crossmembers idk how much that adds but its what it says on the door.

RacerX7fb "I assume that you talking about in a straight line?"

straight line 30mph pull... curves but its going to be hard to beat the 8 in that...

 

I voted 12at because I love the 12a, and a turboed version just makes me love it that much more. I don't really care either way though.

 

I raced a RX-8 with my car when it had full RB exhaust, and a weber 45dcoe, not tuned at all (not running right even). The 8 pulled about 1 length from 0-70 km/h, im sure if the setup was properly tuned it would be ahead of the RX-8.

 

The sticker on the door lists the fully loaded weight.

 

^^^yeah the sticker on the door is the weght of the car with people in it. i still vote 12aT but i think it would be a very close race.

 

a turbo 12a any day unless its not tuned properly dude..btw you don't even have to take it to far , use the T2 turbo and you can dog alot of cars on the street .

 

I drove an RX-8 and it felt sluggish to me, but the only thing I have been in when we raced one was an EVO and that wasn't even fair.

 

Comparing a RX-8 with a gen 1 12AT is like comparing an apple with a bowl full of oranges. A 12AT can be anything from a stock 145hp to 700+hp full race.

A 5 speed SA with a 190-195hp 12AT will marginally beat a RX-8 in a straight line but to get equivalent handling will need wheel, tire, and suspension up grades.

My 12AT puts out 220rwhp and by using a stock turbo has better power over the whole rev range compared with the stock Renesis engine.

The advantage of the RX-8 is it will take two young kids in the back, so is better for a young wife who does not know whether the engine bits go round and round or up and down.

 

the wife is smart and knows the workings on the 8 she wants to remove some of the sluggishness that some have nocticed by putting a intake and exaust. shouldnt have told her about the greedy turbo kit she wants that but idk the quailty of the kit and i want to race her without it first b/c i know it would be easyer than trying to race it afterwards. if you read my first post you can see my mods and est hp, and look in my sig to see that it will have full suspension upgrade.

 

The 3800lb number was the GVWR which is the maximum recommended weight including passengers and cargo. The curb weight is 3000lbs give or take a few pounds.

The 8 will always handle better.