What are the options and pricing for increasing the horsepower of an NA and keeping it NA ?

Sites that sell parts/tools ??
Porting how- to ?

thanks

Chad

 

There is some good porting info on Pineappleracing.com. They do porting, but they are not the cheapest. Do a search, you can find TONS of info on porting.

 

one word.
SEARCH
look at this one https://www.rx7club.com/showthread.p...threadid=31410

 

Add another rotor... AKA the 20B. Heheh.....

 

I think you missed the memo. It had to do with the search function on this site...

 

One quick question(this is for anyone who wants to make a n/a fast).

WHY do you want to stay n/a? If you cant think of a good reason(money is not one, its more expensive to make a n/a fast), then you are wasting your time. If the only thing you want is a fast car, look no farther than a turbo.

 

we want a fast NA so we can **** the turbo guys off when we win..... or thats why i want to stay na.

 

Yeah, it's always fun to tell the guys with turbos that yours is N/A.

Off Topic: I just bought some of that soda and it's awesome. Plus the bottle is entertaining in itself.

 

Lets be realistic here. 14's arent fast, neither are 13's. To me 13's are quick at best. Sure you can beat plenty of turbo cars running 14's, even more running 13's, but with the amount of money you will spend compared to what they will spend, is it *really* worth it? Do you want to spend a few thousand to have a n/a that runs high 13's only to be waxed by a S5 TII with exhaust and intake?

As much as I love being the underdog and being original, if speed is what youre looking for, n/a is the WRONG direction to go, unless you have the money to run a 3 rotor(or 4 rotor). If you can afford to build a fast n/a, you probably have a turbo already. Like I said, building a fast n/a will cost more than an equally fast turbo.

Im still experimenting with n/a motors, and learning a lot while Im at it. But the only only good reasons I can come up with are a linear powerband for autocross, and I have some people and issues to prove wrong. Theres a lot I dont like about the way n/a motors are looked upon, and I can see why they are looked down on so much by the turbo people. Quite simply, the people with the resources necessary to build a "proper" n/a spend their time on turbo motors. And now that im acquiring the resources necessary to do so, Im so very close to goign turbo. The only thing keeping me from doing so is Ill be applying what I learn here to my next project.

 

Ilike the feel and power delivery of the N/A. And it is much easier to drivt becouse the power doesn't come when the boost hits, its all the way through the RPMs

 

Sorry, i prolly should have kept searching. When i did the pics didnt load up because they were old and archived. I was trying to get some information on porting and making it pretty high revving. Its not that i dont like turbos, i would love to find a turbo one cheap but i cant.


Chad

 

Honestly, building a NA IS BETTER, yes if you have the money why not go w/a turbo, we all have different tastes, im gonna build a FC all motor and a FC turbo'd/t2 or give that na turbo bolt on thingy a try/and a fd sleeper...im not trying to argue, we all just have different tastes

 

for me the answer to that is simple...emissions

doing a full TII swap is out of the question cuz i dont have that kind of money, the supercharger that camden/atkins is making is going to not be emissions legal, and according to the guy developing the fc3s.org turbo for the n/a it will also not pass emissions...

so i guess im stuck with an n/a and trying to make it "quick"

 

First off, you're assuming you can win...

Drag times are a poor way of measuring a street car's performance. You spend most of the run over 5000rpm, which is where you spend the least amount of time on the street.

A 14sec NA is going to feel much slower on the street than a 14sec Turbo, because on the street there isn't the opportunity to spend a lot of time at the revs where the NA engine works best. A stock turbo has ~15% higher power/weight ratio right through the mid-range compared to a stock NA, let alone a modified Turbo, which responds better to the same mods.

There's nothing wrong with building a nice, quick NA, as long as you don't fool yourself into thinking you truly are as fast as a Turbo.

 

torquecentral.com


Everybody knows an NA LS-1 has a lot more potential than a two rotor. And besides, it takes a lot more fabbing and general mechanical ability to do an LS-1 swap than build up an NA rotary. You will get a lot more respect with an F body motor in your FC than a worked NA two rotor. Come on, real men use pistons.

 

I have the video of the FD with the LS1 engine on my computer.

Im just out to make my car sportier than it would be stock, and to **** on annoying civics pretty much.


Porting info anyone ?? please ?

 

pistons suck *****

 

all I can say is that I'm saving up to rebuild the NA block.

Renesis rotors + big streetport + lightweight eshaft + 488 gears = quick enough FC

 

Well said Mazdaspeed7. I wish someone would have told me this years ago, I'd be soooo far ahead...

 

This is an example of a perfect reason to build a n/a.

dDuB, since emissions is a reason, and a swap is out of the question for the same reason, why not buy a TII in the first place? Youll make more power while still being emissions compliant, and have a more civilized car to boot.

Canadian Rotary Man, do you realize youre talkign about a $4-5K motor if you pay someone to do it, and around $3k if you do it all yourself? Have you answered my first questions yet(not necessarily on the board, but to yourself)? And you do realize than youll need a standalone(figure $1500-2k for everything youll need and tuning), and a custom intake manifold and exhaust to compliment this motor, if you expect it to make decent power? You will be sorely disappointed if you fail to take this into account. Have you actually sat down and thought about what you want from this motor, and what its actually going to take to achieve your goals?

What are you going to do to make the 4.88 gears work. You do know they do not fit into the long pinion diff on the FC, right?

 

So, how much research have you actualy done on rotary engines? RENESIS rotors huh? Did you know the RENESIS's rotors are not compatable with 13b's?

 

How much research have YOU done? They are. Theres a few people already running renesis rotors in a 13B, including Mazdatrix.

 

How much research have you done on rotary engines dude? Obviously not much cuz you would know that Renesis Rotors have already been used in a 13B. It wad a usuall Pport exhaust, and Intake.
Damnit Adam, my IE window crapped out first time I tried to post that.

 

when i was buying my rx7, there were about 2 turbos in the state that i could find, and both of those were very expensive...i had a limited budget so the turbo was out of the question unfortunately

im not saying that there is anything wrong with the n/a, i love my rx7...sure i'd like it to be as fast as a TII, but my goal is to keep the n/a all motor and make it fairly quick...i mean, if i was looking to get into 12's or lower, sure i woulda waited and got a turbo, but its really not that big of a deal to me to go that fast