Hey guys/gals,
I've looked through several threads (Highest Power Challenge: 2-rotor Non Bridge Non Peri, for example) trying to find some concrete information regarding port timing in terms of increase in performance for the 6-port NA 13Bs, but found nothing.

I realize what I'm asking for may be 'proprietary' information, but I would appreciate any help; if not actual port timing, just an idea of the differences in timing from stock to street port (and the difference between different 'brands' of street ports). Or at the very minimum, information on the best street port available. My ultimate goal is to build up a 6-port S4 13B, and create my own porting templates using the complete 13B model I have drawn up in CAD.

The car is a GSL-SE that will eventually be running a Megasquirt, will be used for daily driving and weekend lapping days. Power goal is 200hp.

Thanks.

 

drop me a line i think i can be of some help i do porting for 6-ports as well as offer a special mid pipe expansion chamber exhaust or call me at 954-825-8288

 

Thanks for the help.

I'd like to keep everything I learn out in the open so I can share results with other users. If you don't mind posting up some numbers here, I would really appreciate it.

 

I've got the stock S4 timing map figured out in Megasquirt if you want it. It's a foolproof place to start and then you can just work from there.

 

^ Thanks... PM'd!

 

do you have an s5 NA stock tuning map for megasquirt too by chance?

 

Unfortunately I don't have a screen shot and I only have timing figured out and so far only for the S4. I still have worked out the S5 yet. You are on your own for fuel maps though. What I can do is to just write it out by hand on a piece of paper, scan it and post it. That would probably be easiest.

 

I'd appreciate a screenshot of your timing table.

 

Has anyone else?

 

have you read the book, rotary engine yet? if you search on google there are plenty of PDF's. there have also been a few sae papers on the subject.

its also important to remember that the port is only as good as the rest of the systems, intake exhaust etc. i like the gsl-se intake, as it gives a really broad power curve, but 200hp with any port is probably impossible

 

gsl-se intake is not the best set up the second gen intakes and t-bodies flow more and still make good torque

 

You have to pay for most of the SAE papers though, unless your member and can get it through the organization your associated with which also happens to be a member.

 

occasionally they get posted up.

 

badass, now I hope when I need to find them that they are easily searchable here.

 

I am sorry j9fd3s 200hp with stock ports might be hard to obtain but with a good tuned system 200hp is easily obtainable.

 

What?

 

Kenichi Yamamoto?

 

yep

 

just to clarify, i was meaning 200hp with the stock gsl-se intake. i just dont think those manifolds flow enough to make 200hp.