13b extend port in first gen tuned
 

Hi so I put a 13b s5 extend port in my 1980 rx7 ,running na with ida electronic dizzy extractors twin 2" exhaust to 3" under diff to boiler style muffler got it dynod today at 200hp well 202 hp to be precise, and it goes real well I think , just wondering if this is what you'd all expect I was quite impressed !

not sure if that result is to be "expected", but it is a great result. you should feel good about it. what rotors did you use and what size IDA?

What is an extend port?????

it's Kiwi/Aussie-speak for a streetport; though the size varies,

is this horsepower at the wheels? Pretty solid numbers

Fd rotors crank 48 ida fc plates (as you can buy ida manifold easily ! Yes at the wheels !and 420 nm of torque !

Pretty shure you mean 220 nm.

:smoker: nah, he meant 420... :smoker: :nod:

https://cimg5.ibsrv.net/gimg/www.rx7...3b6db76273.jpg


There's a pic of dyno sheet at the wheels , dyno power tauranga ! Brilliant tuner!

Iv just posted the dyno sheet for ya

At the wheels !

https://cimg7.ibsrv.net/gimg/www.rx7...018e62fdf8.jpg


Pic of the old girl off to the beach

good power but arnt webbers illigal because of polution on a 1980 mazda
thats ok till the epa gets you then you gonna have to go back to the nikki carb or efi

??? No ? Not here in nz ?? It just got a wof no problem ..

yeah EPA in Nz ha ha.... nice ride... which dizzy you running, seems like you got some more on the table if you ever get the EFI itch :P

The scaling on the Torque axis is probably wrong.

Here is a sheet from a stock rx7 Turbo 2, and one from my Na 13B with streetport for comparison.

https://cimg1.ibsrv.net/gimg/www.rx7...ddbbfabfce.jpg

https://cimg5.ibsrv.net/gimg/www.rx7...72f750eb8d.jpg

on one scale torque is equal to hp, the other it is not, that bugs the hell outta me.

on one scale torque is equal to hp, the other it is not, that bugs the hell outta me.