The_7

im planning on doing a 20B swap to my 7 but its going to be a long time before i can get the money for it.....in the meantime id like to try to get my 12A close to 200hp at the wheels without spending to much money. i dont want to port it because thats expensive and i can save that $ for the 20B. i found a site that i can get used oem turbos from other 7s for $250 so im planning on putting one one of those in...i was wondering if you think it would be possible to get my 7 to 200hp at the wheels with one oem turbo?....i am also doing all the other stuff too (high perf exhaust, ignition, etc.)

Pedestrian X

yup, but it will cost money. youll most likely need a new carb and soem sort of custom exhasut manifold for the turbo. but when turboing a rotary its a very good idea to rebuild it before hand and if your at that stage you mgiht aswell port it while you are in there. and theres alot of other stuff ot take into consideration those are jsut a few factors to think about.

web777

As said above, it won't be cheap. You need to fabricate a lot of your stuff. The 200hp mark shouldn't be that hard for a 12A turbo.

The_7

im planning on rebuilding it but im not gonna port it, i was just going to rebuild the carb but you say id need a new one so ill probably buy the lowest priced holley i can find. also...this is a general turbo question....when you turbo or supercharge a carbed engine, do you have to adjust the carb to deliver more fuel or does the more air forced through it suck in the extra fuel needed without changing the settings?

Pedestrian X

yea, you needa "boost prep" it cuz there will be lotsa of preasure goin through the carb assuming you are going blow through, you dont want any leaks. try and contact 680 rwhp he ocudl help you out wiht a cheap setup i bet. he specializes in webers

12abridgeport

If you are going to rebuild the engine anyways might as well port it and not turbo it. You will get close to 200 hp without the hussle of turbocharging...probably will be cheaper too.

WackyRotary

Why not porting+turbo? I did my own blow through weber setup siamler to MoreMazda's, except mine, I built my own carb bonnet and many other internal mod's to the engine. Its a mildport 12a+S4 turbo+weber blowthrough'd, many other minor things to make it work.

Porting alone, doesn't compare to a well done blowthrough turbo 12a mildport for broad power curve, but should be noted, turbo setup is a lot of work and not quick to get done with. I built it because my bridgeport I made was too peaky(but lots of reving fun) and not smooth enough for the road. Brappy idle and no power below 4000rpm make bridges not a city or commuter car at all, luckily I don't have the problem currently. Mildporting alone with everything else upgraded as well is too slow for myself after having driven a well setup turbo rotary.

Gatorgunner

could you explain mild porting? whats it like compared to lets say racing beats street port for example or something thereof.

WackyRotary

Guess that is what I mean "streetport/mildport" samething to me. Stock port is stock. Mild port is street porting, anything less then bridgeporting is mild to me. I used RB template for mild. I made my own bridgeport template. I forget what the extra duration amount is added without looking again. But transitions are as important as duration! That means don't hog ports out without good transitions.

O 16581 72452 5

Remember this... "you can't go fast going cheap"

moremazda

iTrader: (4)

But you can go easy.

RB exhaust $682, RB Holly Intake $770, Nitrou Oxide Systems "Power Shot" $400. The stupid look given to you by every V-8 lover you spank with parts made for THEIR cars,

PRICELESS

Good luck

Lookieme

1800 bucks isnt cheap....

Coal

He didn't say cheap, he said easy, lol.

I already have everything but the nitrous kit itself........ sooo tempting........

I prefer forced induction though, but I could do nitrous with one paycheque and be stupidly fast.

Agh, so many things you can do to a car, too many choices!

moremazda

iTrader: (4)

But how far will that $1800 take you into that 20b swap??? Oh just about to the intake manifold!!

FB II

agreed, go with moremazda's idea

The_7

like i said im swapping the engine when i get the money so i dont want to blow to much cash on my 12A. i can get a used turbo for 250 and a turbo header for 100 so thats not that much. i dont want to port it cause it would probly be more that the turbo setup and its my daily driver now. by the time i can afford a 20B ill probly be able to buy another car for my daily driver and then ill periphial port the 20B.

moremazda

iTrader: (4)

If you are thinking you will do a turbo for less than the nitrous set up you are looking at a lot of work. I have spent well over that on my blow through setup(s) and so has Wacky.

Fast, easy, and freak'n cool, go nitrous.

More money, problematic, head aches like you won't believe, go turbo!!

Ryan

Gatorgunner

where is this website where you found the turbo and headers for the 12a if you dont mind me askin?

Id like to look at it

The_7

http://www.revolutionrotary.com/parts.html

Metallic_rock

What Moremazda forgot to tell you is that if you get a used turbo, get it checked out to make sure the seals are good! Otherwise you will look funny driving around with smoke coming out of your exhaust only because of the turbo.