I was wondering if anyone on the forum has done it before...PERIPHAL PORT TURBO.

 

Most likely.

 

Turbo or not,PPs are tough to drive on the street.No idle and bad torque.
Turbo PPs are used on race cars,but thatd be quite a beast to drive on the road,not to mention LOUD!!

 

Currently, there is a all motor 13B P-Port doing mid 9's in a drag car. I can only imagine what it would do with a turbo.

I'm sure its been done, but I've never read about it on here before.

BTW, its not that it has a "bad" idle. The only things that make a P-Port unstreetable is that it idles at 2000 rpm (or higher), peak power is above 9000 rpm, and it probably would only get 5 mpg.

 

Thanks for the response.

 

I thought that since there was so much overlap in a peripheral port that if you put a turbo on it it would just blow through the motor without doing much.

I might be wrong, but I thought that's why I you don't see them at all.

 

if someone has one I would love to see that beast in action.

 

About halfway down this page there is a short blurb on what you are looking for: http://cp_www.tripod.com/rotary/pg15.htm

Sorry for the pop-ups, this was the only example I found on the subject.

 

Yea,Bonneville Salt Flats car.Thats kinda what I expected to see one in.Your right,it probably does lose a lot of intake charge with the PP,but at 10,000RPM and 200MPH,there isnt much time fo that to happen!
Not likely to see a PP turbo on the streets Id say!

 

WRONG WRONG WRONG
PP are loud and nasty because they are almost always build in race-trim.
Ever seen/heared/driven a NSU Ro80 or Wankel Spider??? PP and smooth, silent, comfortable,... But they won't last aslong as a sideport one (about 100k miles with modern materials)

 

Not to mention a torque curve that ***** over side port engines.

 

No,yes,no.Pretty rare cars there,but you are correct.

That said,assuming a rotary built to Ro80/Spider peri-port specs would be based on a 12A or 13B block(NSU blocks would be rare),is it possible to dial back the 12A/13B exhaust ports far enough to reduce overlap? I mean,you can increase port duration,but you cant really decrease it from the factory positions.Filling side ports with Devcon is one thing,but closing the stock exhaust port sooner would be........????

Maybe some throttle bodies at 12:00 O'clock on the rotor housings!

 

You mean sweet idle and "MAD" torque.

Even a race peripheral port will make more torque at any RPM you could ask for compared to a stock port.

The louderfulness is generally because of two reasons: many people open the exhaust ports way earlier, causing lots more noise. (MFR P-port housings have practically the same exhaust opening timing as stock) The other issue is that the more overlap you have, the more free-flowing the exhaust must be to crutch up the low load/low speed issues. (At the top end you want free flowing no matter what, PP or SP)

Did you know that Mazda's speced idle speed for their race PP engines was 1000rpm? But it's so much nicer to idle them up to 1500-1700... then you get the brap brap brap instead of sputitisputtering.

- Pete (My PP is in the works, and no it's not to full race port timing specs either)

 

Peejay,
Any update on your PP project?

Thanks
CW