I was reading an article on porting on the iluvrx7.com site and it said you can get 300 horses from porting, naturally aspirated that is but it also says that poeple dont think its reliable (street) thats why they dont do it.
Is this true or not can I just street port my ingine or bridge port to make this amount of power or no?

 

A street port isn't gonna do it, but you'll get great power. Well at least so far none of us have found a way to get that kinda power from a street port. The claims are true though, I've heard more than that (318bhp/264 rwhp). I'm sure that if we have enough time we'll find some more secrets...it seems that everyday we find a new way to do something.

 

To get that power from an NA 13B you'll need a P-ported engine plus all the extra modifications to allow it to spin up to higher rpms (ie: 10-12k)

Streetport NA almost impossible to get 300+ rwhp as far as I know. Bridgeport possible but still would be a large task.

It would not be streetable at all. Idle around 2000 rpm, good power STARTS at like 5000 rpm and all the way rushing to redline of 10-12k. Fuel consumption horrid, noise unbearable (definitely), and hard to drive. Some guys drive p-ports on the street... but they barely put any miles on them and it's not very nice to do, very rare.

 

Hey brigde port thanks for the advice i didnt think i could get 300 to the wheels honestly i was just trying to get someone to teoll me how much is possiable also if a na motor is not that much higher in compression than why is it not good to turbo it is it just the internals that are not as strong or what cuz some of the guys talk about it spools faster so what if you build the motor right and have all the right stuff then why wouldnt it be possiable just curious

 

it just wouldnt be worth it for a street car. Maybe a race car that can keep the revs up and has no restrictions of noise, etc. I would definately rather have a turbo rotary for the street. Lower end usable power, more modding possiblities and MUCH easier to get 300hp... or more

 

What do you mean a PP isn't streetable? If the aussies do it...

 

all I have is 1 word FORCED INDUCTION you want 300 or more to the wheels... FORCED INCUTION... CHEMICAL INDUCTION... IE NITROUS... no sense in haveing real bad gas mileage and a real high power band and a poor engine life when you can have FORCED INDUCTION...

 

like i said before the posts went away, 375 + is possible and its only limited by the strenght of or internals, and the size we can make the ports, if you wanna go big NA hp talk to judge ito for 6-port porting or rice racing for semi periphreal porting, both are streetable, the 6-port porting being the most streetable( almost like stock) but the semi peri's will give you more power

 

Forced Induction = 2 words !!.

 

if your dead set on a full peri port know that it will never pass smog, never be quiet, idles at about 1.5-2.5k(dependent on size) and wont last to long because of the RPM you have to run it up to to make power( this last part can be negeted with stronger internals like the guru e-shaft with center bearing, i heard it will extende reline to 15,000, i dont know if i beleieve that though, but with it id say 10k is alot safer)

 

dont go forced induction! thats to easy, everyone does that,........ be differnt!, well,.. unless you want lotsa streetable, (semi) reliable power,.. but you wont be unique!

 

thanks drago I will have to keep thinking about this cuz im really being torn many diff directions I dont know if i want to just fix up the na vert cusz it looks sweet, and just sell it to get a t2 and well you know put go fast goodies on it or put the all wonderful 20b in it i just dont know ...

but thanks for the info guys it helps you guys are a great keep rotary *** kick inn

 

Custom made 12.5 : 1 compression rotors.

 

or you could put a 20b in your vert,... same work is required as putting one in a t2, except youll hae to swap transmission, driveshaft and rearend aswell. But yeah, ultimatly a t2 will make more easy cheap power for you. but hey a 20b convertable would be awesome

 

can you give me more info on custom rotors? planning on a custom turbo 12a

 

Don't know much about them. I don't know any company that markets them, but I'm sure SOMEONE out there has some. You would just have to get a VERY trustworthy and reputable machine shop to custom make them for you. You'll end up paying more for your rotors than you did for your car also (unless you have a 3rd gen). There was a post in this forum about a week ago about high compression custom made rotors. Not much info was there, but check it out.

 

One of our local racecars named "el duro" (its a 1st gen that is purple with red/yellow flames and a big "rotorsport" logo) makes 212 rwhp with a gsl-se motor, no porting (because porting a 6 port motor is pretty much worthless), full exhaust, intake and old school electromotive EFI. Obviously its very loud and not at all emmisions compliant, but its quite reliable and 212 rwhp is really good for the minimal mods.

Id say do an 1990 NA motor with intake and exhaust, larger secondaries, T2 fuel pump and a WOLF 4.0 engine management and you should get similar numbers with good tuning. Just a thought....

By the way, PP is NOT streetable, swallows TONS of gas and idles at probably 2500 rpm. If you want big hp, you really do need to go turbo. Much more streetable, good cruising gas mileage and lots of power on tap. I have a 1989 T2 with lots of mods so i can verify that you do really need turbo for lots of good streetable power. However, 250 hp/212 rwhp NA is nothing to look down your nose at!