Keisuke Takahashi

What's the max power can i squeeze out of a n/a 13b rotary? It will be a while until i can perform a full turbo swap so i want to see what i can work with for the time being. Man it's hard being a college student.....

Twofer

You don't even have to search, just scroll down. This topic comes up almost every day.

Short answer: Not more than you have now, without spending thousands of dollars.

Things to look in to:

Porting
Removing emissions / Rats nest removal
V8 or 20B swaps (which are a lot of work)
Intakes (and how they don't help much)
Exhaust systems (and how they can screw up your AUX ports)
Ignition systems (and how they don't help much)
Individual Throttle Bodies (and how they don't help much)
VDI swap on to a S4 (which is a pain the ***)
Lightened rotating assemblies (and how they don't help much)
High compression rotors (and how they don't help much)

Kyrasis6

lol.

The concensus seems to be about 170-250 hp depending on how much porting, money, and skill you throw at it.

TehMonkay

iTrader: (-1)

If you have an S5 get a full exhaust and intake and advance the ignition timing 10degrees and make sure you do a full tune up first though. Around 172 to the wheels has been obtained with stock ports this way. Had some sort of fuel adjustments too though.

Rxseven7

so basicly, sorry for thread jacking, you ppl are saying jsut to wait till you can do the swap?

TweakGames

iTrader: (3)

The absolute max horse power you can get out of a n/a 13b is 437.588 DUH.

But be warned, even .001 over that and any 13b will open up a black hole right in your engine bay and 437 horses will pop out. I have seen it twice. You were warned.

Aaron Cake

iTrader: (1)

A more appropriate question is "how much do you want to spend and what do you consider streetable?".

If you want a 350HP 13B NA, you can make one. It will be peripheral port, loud as hell, and make peak power somewhere around 11,000 RPM. More power is possible with nitrous (though some argue that this is not NA).

lkz

with a good intake and exhaust whats the hp gain for a j port or street.........just bought my first 7 and i love it soo much i am buying me a spare 13b just to build it maybe turbo?????? what would have to be done to internals to make it hold say 25psi????

Sideways7

iTrader: (7)

With a fresh rebuild and a street port on an s5 motor, you can get 160-170 hp. With a standalone you can bump those figures up to about 180-190 with 200 being about the absolute peak. With a bridgeport you can get more like 250-260 but it won't be very streetable, and as Aaron mentioned you can get very high numbers with a p-port, but it really won't be driveable on the street, if for nothing else than the sheer loudness. Don't get me wrong, you can drive a p-port on the street, just not one with that much power.

Aaron Cake

iTrader: (1)

J-ports are a horrible port. It's the most unreliable port ever created with engine life in the hundreds or thousands of kilometers. Generally engines fail due to water leakage since the coolant o-ring must be cut and sealed into place in order to accommodate the port. J-ports were developed strictly for racing to get around rules that banned peripheral ports.

Street ports are for the street, hence their name. A good set of headers, resonator and catback and a homemade cold air intake will make a world of difference.

Turbocharging is an entirely different animal.

Goofy

If you plan on doing a turbo swap, a good choice is to worry about suspension and other parts you're not going to change when you go turbo. There's no point buying a header for your N/A engine when it's useless after you get a turbo.

wanna_be_dk

can someone give me more info on these port that you keep talking about, and i need help with a rebulid

Aaron Cake

iTrader: (1)

http://www.rotaryengineillustrated.c...orks/index.php