Nike's Ad agency approached a number of performance shops in Portland for an Ad campaign they are doing for a new running shoe. I signed a release today, was paid $300, and they did the photo shoot at Corksport. So if you are flipping through a future copy of Men's Health or a Runner's World, you may see my engine! This picture is a bit dated, but you get the idea.

 

Cool. Good deal. Don't spend all your money at one strip joint.

 

That is so cool!

 

Thats a great pic of the 20B in your RX-7 mate. best dressed triple rotor I have ever seen...........

 

How does it run? Will it pass DEQ?

Jim

 

It is running with the modified stock computer. Just working on getting it buttoned up and back on the road. I don't expect a problem with emmissions. It passed before and it wasn't nearly as well put together as it is now. However, that was 2 plus years ago. Now that they have this new system, we will have to see.

 

so what have you got this stock computer setup to make for boost?

matt

 

This computer was modified by an outfit down in So Cal. Too early to tell, I'll let you know!

 

can you explain why nike wanted a rotary?

 

Actually, they were more interested in it because of the colors and how it looked. They weren't actually looking for a particular engine, just one that appealed to them visually. Since they are based in Portland, their ad agency called around to a variety of performance shops and the gus at CorkSport suggested mine since it was there. They came and took a look at it and made a decision a few days later. They took the pictures and gave me a check. Who knows what will ultimately happen...

 

who moddified it, how much, and how was it modified? do you know what psi you can run? please tell me about the computer heath

 

CorkSport would know the specific name of the company. They had it done for me. I remember that we had considered sending it to Japan (RE Amemiya), but the cost was pretty high. From what I understand, there were three limiters removed - boost, speed, and rev. Rob Golden, who built my motor, said that my motor will handle all of the boost my twins would ever be able to produce. In talking with a variety of people, the twins will likely be able to be in the mid teens for boost. I am using an APEXI AVC-R boost controller. However, all of this is speculation until we actually get it on the road, broken in, tuned, and dyno'ed... Before someone else points it out, I made a deliberate decision in going the "modified stock computer and rebuilt stock sequential twins (engine also was rebuilt with a small street port, ceramic apex seals and a level 3 oil mod)" route that I was sacrificing maximum horse power for realiability and ease of operation. I should still post some pretty respectable numbers - I am hoping for 4xx in both hp and torque. I am hoping to be ready for a dyno run in late April/Early May - Apple Blossom time!

 

https://www.rx7club.com/showthread.p...hreadid=233692

check out this thread about the turbos... NOW and i, and a few other people have been talking about it for a long time. You WILL run out of volume with the stock twins. they can be modded (what i am planning on doing) check out the thread to see what pettit does w/ the stockers. Im considering BNR doing the turbos. NOW says you will see 10psi max on stock twins.

anyway, NOW has a RE-Amemiya modded computer. i want to go with a modded stock computer too! he says his is modded to 16psi. do you knwo the specs for yours? i dont think mazda has maps all the way up to 16psi do they???? how much was your mod and what can it do? are you running the stock injectors? im hoping to make 550max hp with stock motor, modded twins, modded computer. i tryed emailing RE but they never responded about the computer. if i may ask...what did you pay for your computer and what did RE quote you? thanks so much!! heath

 

https://www.rx7club.com/showthread.p...hreadid=233692

check out this thread about the turbos... NOW and i, and a few other people have been talking about it for a long time. You WILL run out of volume with the stock twins. they can be modded (what i am planning on doing) check out the thread to see what pettit does w/ the stockers. Im considering BNR doing the turbos. NOW says you will see 10psi max on stock twins.

anyway, NOW has a RE-Amemiya modded computer. i want to go with a modded stock computer too! he says his is modded to 16psi. do you knwo the specs for yours? i dont think mazda has maps all the way up to 16psi do they???? how much was your mod and what can it do? are you running the stock injectors? im hoping to make 550max hp with stock motor, modded twins, modded computer. i tryed emailing RE but they never responded about the computer. if i may ask...what did you pay for your computer and what did RE quote you? thanks so much!! heath

 

Thats cool, I hope to see it.

 

ive seen 14psi out of mine, it drops way off near redline though.

mazda has maps up until boost cut, where that is i dunno, i would like to though

mike

 

so did you expierience boost cut at 14psi? what i thought boost cut was @ like 12 but maybe not. NOW saw a max of 10/11 psi from his turbos measured at a point before the intercooler. so (supposing) we have maps all the way up to 16/17 psi (which i highly doubt)... and a company can mod the computer (you said boost, speed (of car im assuming) and rev. limitations), what would be the advantage of going with an aftermarket computer besides a little room to fine tune it? how much extra power are we talking from an aftermarket computer???

also if all those limiters are removed how would we protect our engines from leaning out? just bigger fuel pump and boost controller? i dont know if the stock injectors are up to the job of providing enough fuel for 16psi.......

last question: how much HP are we talking about assuming we can run 16 psi, and is that boost level ok on pump gas 91/92 octane.... thanks

 

i have always run mine on haltech, so there is no boost cut. um the factory ecu has a 2 bar map sensor (kept that) so it only can "see" up to like 15-16psi. i have only run pump gas 91-92 cause its a street car

mike

 

I was told that 16psi= 450hp on a stock cosmo.
I was also told that the stock fuel cut is at 10 to 11 psi,
even though i have hit these numbers before with the
stock computer, also seems that air fuel ratio stays
quite rich at 10 psi all the way to 7800 rpm.
stock injectors are good to 16psi from what RE Amemiya
has said.
thats all i can tell ya
matt

 

thaks matt!

pettits 20b is 550 RWHP no? what else are they doing?

 

not sure but i am sure that with some porting of the
motor and the turbos even if i dont get the turbos
upgraded it will be better than it is now.
still thinking of the level 3 bnr upgrade, just a lot of
money to put into the stock turbos
matt

 

wont the stock computer not work if you get the motor ported?

 

if the motor were running lean to start with i would
think there might be a problem with porting it and
running the stock computer, but since i am seeing rich
most of the time a little porting might just help things out

matt