Does anyone know of a car that has a supercharged 20B in it aside from the Mazdatrix race car? I'm interested in doing something like this because it seems like it could actually save some money, time and trouble in a conversion (although it would still be very expensive). If nobody has done one, what would you guys estimate a mildly ported supercharged 20B running 9psi of boost would make?

 

I don't personally know of a car with one but I do know that Atkins sells one

 

I saw a 20B with a HUGE centrifugal SC on it at a local rotary shop. Looked pretty nice! The shop owner said it made about 600HP on the dyno...

 

There was an Aussie supercharged 3-rotor drag car that blew up. The video is on the internet somewhere, but I can't seem to find the link for you.

This page shows a picture of one that was used on an air boat:
http://cp_www.tripod.com/rotary/pg20.htm

$4,000 Used 20B-REW with stock turbos

vs.

$4,000 Used 20B-REW with stock turbos
-$500 Sell turbos to some sucker on Ebay
+$3,500 Supercharger setup and a LOT of work
$7,000 Total

I'm not seeing the savings here.

Assuming a roots type supercharger, about 10% less than it would with a turbocharger at the same boost level, and it would require super unleaded fuel.

 

Ah, seems less practical now. Besides, with a supercharged and carbeurated 20B, you'd probably get about 10 miles per gallon. And I do have that video of that car blowing up. I guess I'll save up so I can get a new shortblock when my current engine goes in two or three years.

 

Saw a few of them at Sevestock the last few years.
One was in a B2200(?) flatbed truck with pro-street tires.
I think I saw another in an RX-3 if I remember correctly.

 

that aussie car had a whipple on it if im not mistaken. i think i have an article on it somewhere, ill see if i can find it. i remeber they were having trouble with belt slip cause of the high RPM.

 

actually alcohol was leaking and then the blower backfired, nearley blew the hood off the car.

 

I was talking about before it blew up, they were having trouble increasing the power because the blower belt was slipping, and therefore losing power. The article said they were about to go to ribbed belt to reduce slip.

 

there was a feature in a magazine here on a surpercharged 20B making approx 1000hp, just bought the mag. ill post some snippets soon.

 

Check this site out
www.blown3rotor.com

 

Oh yeah. Great site with archived updates and tons of photos/videos.
Thanks for the link.