Was wondering what the cheapest way to boost my hp up would be on my 86 N/A Rx-7.., already have exhaust and k&n.

Thanks!

 

Alright you want to go faster? Go to the top of the tallest hill in town. NOW FLOOR IT! With 63 posts you know there is a Search function on this site.
https://www.rx7club.com/search.php

The basics are free up exhaust and intake, porting, fuel mods as necessary. Weight reduction won't get you more hp but it will improve your weight to hp ratio. Look around I bet I can find 4 links to other posts in 3 minutes, that answer this exact question. Good luck!

--Fritz

 

 

nitrous is cheap and makes you go fast

 

take a **** in your fuel tank

 

I can give you five ways.

Number One:Go with a P-Port.

Number Two:Go turbo.

Number Three:Go SINGLE turbo.

Number Four:Buy a 3rd gen.

Number Five:Go 20b

That answer your questions?

P.S. You can also put a 13b-REW engine in also.


Sarcasm.

 

Well to help answer your question, the first few things you should do to an n/a to get more power are: cold air intake, header, exhaust. You can run low-mid 15s with that setup. For more tips, SEARCH.

 

same...thing?

 

Ya, don't mind the newbies.

 

turbo II means 2 turbo right?

 

Well to Boost your HP get a Jspec or Apsec TII engine and drop it in.

The cheaper way would buy a TII.

I've gone to the Dark side though so my opinion is a little one side though heheh

 

not EVERYONE likes the powerbands and tuning responsibilities of turbochargers

 

NO NEWBZ! The II is Roman numerals!!!! It's a single Dual boost Roman made turbo! (Zues made it himnself)

 

Most any modern turbo can give the same powerband and low-end power as any supercharger. That is unless your are running a oversized drag turbo. Plus turbos are more efficient.

 

well given the fact that were talking about N/A rotary engines.....i was talking about turbocharger vs. N/A .... no clue where you got SC from and threw it into this thread

and superchargers are WAY more efficient than turbochargers.....they last 5 times as long, dont generate as much heat, dont burn or use any oil or coolant

 

This is gay advice, well most of it.
Why would somebody that obviously doesnt know what they're doing, get a perhipial (sp?) port or put a fd engine in an FC? wtf. or a 20b.
Anyways, search the thread, "beefy n/a" or "beefy na*" or something like that: "How to make a beefy na"

After exhaust and intake, I removed the PS/AC and some other **** that I didnt need, freed up engine space and a few HP.
Anyways, i have to get off this computer now.

 

well i herd u cant drop in an 13B-REW cuz it takes more work than a 3 rotor...........but u can drop in the cosmo 20B or the 13B-RE so yea....im new but jsut thought id add taht info i herd from others...

 

well you have to make a whole new subframe for all of those motors....the difficulty of dropping in a 13brew and a 13bre is the same since they are virtually the SAME engine....but by no means are those 2 HARDER than a 3 rotor...

3 rotor you have to do a whole bunch of extensive things

 

Unless u have shitload of money and/or resources and/or youre bored and want to do something weird, an FD engine shouldnt be considered.

 

Wrong...
The 13b-rew has mounts totally unlike the 13b-t,13b-re or the 20b-rew..

The 13b-re and 20b-rew have identical mounts (makes sense, they're from the same car... )
The 13b-rew has mounts the mean you need to make a new subframe, or get very creative in some other way.

You can buy off the shelf mounts for the 13b-re and 20b-rew engines.



and to reiterate(sp?) what BDoty311 said, turbos _are_ more efficient than belt driven superchargers... Not that this matters if you want to stay N/A.


~300hp is the absolute most you'll get out of N/A 13b.. This requires alot of money aswell as rather crazy porting/powerband.

~200hp is more realistic for a road going engine.

 

Lol 300 hp out of an NA?
Some ugly bridge port and nitrous?

 

No? just a normalish BP, no NOS.......

I've posted it before, and i'll do it again....
Have a read of this......

In it you will find many examples of very seriously powerful brideports......

ie.. "At the fly we made 180hp 3500rpm, 260hp 6000rpm & 303hp 10200rpm."


Like i said before though...
ALOT of money...

edit: FWIW, the class these cars are running in, IPRA, does not allow the cutting of the rotor housing AT ALL. It must all be contained in the side plate..
Just a bit of interesting info...

 

Well you need to be alittle more specific. Turbo RX-7 around here are referred to as "TII"s. Not just "turbochargers"

And I was referring to fuel and power effiecient. Doesn't boost when you dont want to, and uses the exhaust to power it instead of a pulley and a belt.

 

wellll...kboneRX7 has an NA and he wants more power out of it ...Digi7ech said to get more power to get a "Jspec or Apsec TII engine and drop it in.

The cheaper way would buy a TII."


so i said "not EVERYONE likes the powerbands and tuning responsibilities of turbochargers" meaning, maybe kbone LIKES having an NA ... and doesnt want a TURBOCHARGER (as they come stock on the Jspec or Aspec TII engines).... i know what a TII / TurboII means, i have one myself


then you came up with superchargers from that.... dunno where it came from...but i know what im talking about, and i made sense

 

I have a intake, headers, and a cat back, pullies and the TB mod it runs a 9.8 @74 in the 1/8 which takes out stock turbo II around here