Here's my setup:

82 base model, LSD and rear disks
S5 street ported 6-port
secondary sleeves removed
S5 intake, active dynamic chamber
stock fuel injectors
emmissions controls in place
2 1/2 exhaust all the way back
Haltech F10 fuel control

It made 167 rear wheel hp on the dyno over the weekend and 131 lb-ft of torque. The torque curve is beautifully flat from 4000-8000 RPM. The dynamic chamber switches over at 6000 RPM and makes a noticable bump in power.

It's mostly tuned for driveability, but it's seriously fast! I'll try to scan the dyno run in sometime soon.

 

s5 what is that, sorry, its probably been answered before

 

series'

s1... 79-80
s2... 81-83
s3... 84-85
s4... 86-88
s5... 89-91

and they dont call them s6's

 

Isn't S2=81-82 and S3=83-85?

Nice results purple82
Wish I had the cash to have a setup like that to play with.....

 

What kind of dyno did you use? CJ

 

That's pretty darn good!! That car must be fun as hell to drive! Who tuned it?

With a streetported S5 (high compression), I think you can squeeze a few more out of it. Do you have an E-Fan?

 

Nice!

enigma I think your right about the S2-S3 thing.

 

Good question. I'll find out.

 

Driveability and longevity have to take priority over max power. I want to drive it for a long time.

The fan is stock clutch.

 

Enigma is right about the model identification.We use series 1,2,3,4,5 and 6 here in good old Africa
karis

 

His name is Jim Berg. He's worked on a number of rotarys. If anyone living in CO want's his phone #, just send me a PM.

 

Sounds like a real sweet setup. If I was going to do a swap, that's the one I'd like to do. I have been keeping my eyes open for an S5 block.

I'll bet that the haltech wasn't cheap though.

 

It's 128 lb-ft, not 131. The green line is before tuning, the red is after.

Notice the bump at 6000 RPM, that's the dynamic chamber changing over.

http://www.nopistons.com/forums/inde...howtopic=40669

 

Why would the 83 be a different series than the 82? The only difference between the two was the deletion of the lock on the gas cap in 83?

 

No, the '83 has the beehive oil cooler, bigger clutch, and lighter rotors -- I think.

 

I thought the changeover was in 84 because 84 introduced the GSL-SE and the different dash design, amongst a few little other things that I can't think of right now.

Jon

 

Nope. The '83 is a sort of hybrid year. It also ditched the 85 mph speedometer.

 

I've got a stock '83 RX-7 GS...it has the dreaded beehive oil cooler...

 

Why do you have the secondary ports wired open?

 

We call them S6 in Australia. And S7 and S8 for that matter.

Anyway... Nice figures, congrats.

 

They're not wired open, the sleeves are removed and the port is modified. As you can see, torque isn't suffering.

 

rx7.com has a dyno sheet of a stock 91 13b, secondary port sleeves and all.

http://www.rx7.com/rx7rx8comparo.html

(the blue is an S5, the red is an Rx-8)

There could be differences in the dyno and with the engine freshness, but there isn't any spot on the stock torque curve that is higher than mine with the sleeves removed.