Peripheral Port 12A Rotary Turning Over (Long)

Manually cranking a freshly built 12A peripheral port engine. The engine is built with 3 window bearings, is doweled and has a shimmed oil pressure regulator. Ultimately it will run EFI and be turbocharged. Plugs are installed (listen to those pops!)

Category:

Autos & Vehicles

Tags:

• peripheral
• port
• 12A
• rotary
• wankel
• rx7
• mazda

[rayvdub]

Well I know you must be tired or overly excited of seeing so much question but.

I got a few more :D, I am planning a TII swap on my 86 rx7 (that's not where I'm going) so on the stock N/A engine (housings turned out beautiful) I'm planning to 1.- turbocharging as per your specs on your page. 2.- aggressive porting (No need to pass emissions, I'll explain in a sec) 3.-Do a rotary swap keeping the FI system on a VW Bug (Love em). So would peripheral ports be good on the bug? it's gonna be light.

[aaroncake]

@rayvdub A PP NA would be awesome in the bug. The stock EFI system will be useless though so you'll need a standalone. 300HP NA would be easily done with a good tune. Or, stick wtih side ports, don't port the 6 port irons much, and turbocharge. Keep the aux ports working and use a smallish turbo and you'll have an awesome ~300HP car with a great powerband. I'd suspect a 300HP Bug would be frightening.

[rayvdub]

@aaroncake I think I'm going to turbocharge the NA block, and keep the aux ports working, i am thinking of using boost to open the ports, don't know if it will work though, but should since I think it uses back pressure from the exhaust. I should be able to keep all the stock intake stuff, since I'll have plenty of empty space in the engine bay.

[aaroncake]

@rayvdub Boost and a solenoid controlled by your EMS. You really don't want them open below 3500-3800 RPM. Basically this is my plan with the 13B I built for my Cosmo, with a few other details you'll eventually see in the videos. This I think is the evolution of the 6 port turbo, for a very drivable car, with good low and midrange, excellent fuel economy and the ability to carry the powerband high into the RPM range like the 6 port engines were designed.

[racedriver52]

What is the port in between the 2 yellow rotor housings? is it the intake port?

[aaroncake]

@racedriver52 The stock primary intake ports. For this engine they were left open and then blocked off with a plate when the intake manifold was fabricated.

[DtoxTNT]

blop blop blop blop ;)

[Polar5g]

"We're gonna need a longer ratchet!..." Sweet engine though!

[yumyumtofu]

that's what it sounds like when i get a blowjob.

[DutchDennus]

goood, get that dust in there nice and firm

[TomLocura]

@aaroncake but dont they sound fucking awesome!

[aaroncake]

@tpvalley Too much port area and the flow from the side ports hitting the flow from the peripheral ports at 90 degrees would interfere. Plus there would be so much airflow into the engine that there wouldn't be much velocity until 8000-9000 RPM.