87 N/A hp potential....
 

I purchased a 1987 n/a rx7 not to long ago with only 48,000 miles. I just need to be steered in the right direction with power gains. I was woundering what mods I would need got get my 87 n/a from 146 hp to around 200 hp? Any suggestions would help. I was also woundering if the car is still capable of running a 15.5 since thats what the factory times say for 1/4 mile... Do they loose alot of power over the years? And what 1/4 mile time should I expect out of a 200 hp 87 n/a Rx7??? Tanx alot guys. :bigthumb:

get a full tune up first. no exceptions.
full exhaust and intake are pretty much all an N/A can do, unless you get into porting and such. 200hp will be hard. im currently turboing my 86n/a though.

Search please, this topic is covered constantly :(!

Don't forgot standalone/piggyback, the NA's BEST friend when it comes to making more power.

If you want 200hp, I think your going to need the following to get it with stock porting.

-Full removal of the 6pi for maximum peak airflow
-Ported manifolds
-Polished and smoothed out intake as well
-Piggyback/Standalone (standalone will be a shitload better)
-Full exhaust including header
-Cone filter intake

That would be a pretty damn badass NA.
If you go as far as an agressive street/bridge port, you could get much much higher HP.

I beg to differ, porting is the NA's best friend for power added per mod. It's just a lot harder than most bolt-ons. :) Second would come exhaust, third would come a cold air intake and intake manifold porting, fourth would come EMS.

In my opinion of course. :)

Not going to happen unless you go forced induction or NOS.
Trying to get it NA up to 200hp (at the wheels?) takes a lot of custom work or a lot of money!


-Ted

Read the archive at the top of the page.

https://www.rx7club.com/2nd-gen-archive-72/how-make-beefy-n-need-your-recommendations-31410/

Imho:

Porting (Kahren agressive stage streetport) (s5 rotors)
Extrude honed manifolds
Full exhaust
Cold air intake of a sort
Adding a piggy back or perferably a stand alone ECU

Then NOS! That should be good for 200 HP.

(Since its what I'm planning). I say search under Kahren and see the numbers he was making in his NA's.

theres alot of things you can do, just ask your local rotary drivers and find out what they did to there cars. If they did something you didnt do and are able to then do it. You would be suprised what can be done to these things. Turbo's and Nos arnt the end all to be all of power.

v8 conversion lol

BHP or WHP?

I thought he meant brake, as he compared it to the "stock 146hp" rated at the flywheel.

No, but they are the cheapest and "easiest" way to get power out of these engines...


-Ted

Thats true. But id rather tell someone im getting 300rwhp out of the engine as opposted to needing a turbo to do it. I wont even go in to nos i consider it cheating. just my opnion though.

i agree i'm just not as impressed to see a fast car if its using nos... you dont deserve any extra power you dont normally have. that is unless youre just trying to see just how fast you can get it and dont have anything left to do

i encourage turbos though sometimes it just makes more sense to have it turboed($$$$$)

How the hell do you people think NOS is cheating? I mean what kind of test do you think this is? Last I checked, the goal was to get from point A to point B as fast as possible by any means possible, under the same regard I considering engines cheating, run your ass down that 1/4 mile, ya lazy bastard!

Nos is cheating b/c once you run out of the juice your car nolonger has that power and until its on the juice your car doesnt have the power. Before you do it dont compare nos to gasoline.

?

So how do you feel about forced induction? That's something that isn't supposed to be there.

NOS is just another power adder. I bet you got pwnt buy a Civic running nitrous?

NOS is like gasoline. Go race your car without it ;).

Amazing the crap people come up with....almost sounds like a piss poor excuse for not being able to afford it, just like most people who bash turbo's, generally they can't affford it..... Either that or someone dropped them on the head, because the goal of 'modifying' a car is to make it go faster... and a turbo is always going to net more than without one, and the same goes for NOS/

I said it once, I'll say it again:

Nos is cheating the way i see it. Turboing i dont ahve anything against it but i dont think ill be bothering to do it to my car.

Yeah, "I won't bother." means I can't afford it on pizza delivery driver wages.

people who say it's cheating are full of poopy...but my opinion of it is that if you're going to toss natural aspiration out the window, there's more bang/buck with supercharging or turbocharging. Plus, when was the last time you heard someone say they couldn't run you because their turbo was empty?

Pretty much.... There's no way to *cheat* to go faster, you either do it, or you don't. Just because something runs out.... It either stems from the can't afford it, or they're trying to act all cool and be against the F&F trend, god forbid they say nitrous actually has a benefit and works, they might end up lookin like a ricer!

No the I wont bother means id rather kicked the guys asses that use turbos. It gives me more to gloat about.

As for the NOS yes it does work but it only works if you have the bottle filled up. A turbo or supercharger work. NOS isnt exspensive so who the hell woudl use that excuse as in not being able to afford it. Hell if you own one of these cars you knwo the person can afford NOS.

2nd gens are cheap, what exactly does owning one have to do about implying money?

Makenzie: The bang for buck only comes over a time frame, for the first couple of tanks, NOS is going to be a lot better.

Also, how many N/A 13B's do you know of that can beat a turbo that has an equal ammount of money tossed in it? Better yet, whens the last time you saw a 600hp N/A 13B?

Number one, "NOS" doesn't exist.

In some areas, affordabillity is a moot issue. The closest place to me that would fill an NO2 bottle is 2 hours away. A lot of the places that fill bottles with quality gas for reasonable fees are industrial and it's hard to make it to fill sites if you work a typical 9-5 schedule.

If you have 2 cars one is faster stock then the other theres no way the slower car can keep up with the faster one if you put the same amount of money into the cars.

Yeah the cars are cheap to have but between gas and fixing shit it takes money to do that.

NOS exists, it's a company that sells Nitrous products.. Did I mention my Fiance works for a gas company? I could get LH2 if I wanted!

Yeah...I look at it in more of a "I'd like this to last a couple years" perspective..lol.

[qoute]Also, how many N/A 13B's do you know of that can beat a turbo that has an equal ammount of money tossed in it?[/quote]

Given that they were modded by folks of equal intellegence, none. I've seen some people with TII's really blow their money on stupid shit, though.


lol...I haven't seen many 600hp Turbos.

Oh yeah...forgot about them. But they're a company, not a product.

slick shit! I want some! How do you ship that?

NOS itself doesnt exist. its a acrynom for Nitrous Oxide System.

Haha.... we're located in Texas, why bother shipping lol! :)

lol...where in Texas? it's huge...

Houston

750 miles...lol.

I visit my family in Cleveland a few times a year, though...I might hit you up...my favorite part of chemistry class was blowing shit up with hydrogen products...

To clear things up, NOS(the company) does exist, but they dont sell NO2 like Makenzie71 suggested, because that is Nitrogen Dioxide. N02 is not same as N2O which is Nitrous Oxide. Basic chemistry people!!!

...yeah it's been covered, guy.

typos don't suggest anything.

(too tired today!)

I'm pretty sure that's exactly what they said Ted.

NO2 is not the same as N2O, which is Nitrous Oxide (being that N2O = nitrous oxide)

damnit!
4 hours of sleep + 16 hours of work
I knew I was seeing things! :P


-Ted