Falcon

I was thinking something for the last couple of days, and it hit me when I was staring at a picture of a rotar for the engine. Is it possible to make that groove(bowl?) a little bigger to eek out some more displacement? If so, what would happen? I'm looking for positive and negative results here, because to be honest, I've got nothing better to do... and I'm ordering a pair of lightweight rotors soon, so.... ;> Any help here would be appreciated.

'79rx7

that would just ruin your compression, and balance unless it was perfect

BigTurbo74

what about the compression on a turbo engine? if they were balanced perfectly wouldn't this be a big improvement in power? maybe ito will have another field to master...

1Revvin7

That stuff is unheard of, people just add more rotors.

Falcon

My uncle is a machinest, and with equipment he has access to, it really shouldn't be hard to do. I expect it's going to take a day at most per rotar, and like I said, I have nothing better to do, so I'm going to give it a try. I'll post the results in a few days. The way I figure, it's going to help the powerband all the way to redline, and the worst case, I might just launch a piece of the rotor through the block. Either way I'm curious about both. Here's how the rotar faces will look like.



______ ______

\______/ (this is the normal looking 'bowl'



________ ______

\__ __/

\_/ (this is what I'm aiming for)



Wish me luck

Falcon

Oh hell, the diagram didn't work :P Anyway, what I'm trying to do is add a second bowl in the middle of the larger bowl at the bottom. Hope that clarifies it.

j9fd3s

wont that just lower the compression?



mike

djgiantrobot

it'll actually make less power all the way to redline unless you boost the **** out of it.

ILUVMY88CABRIO

The way Mazda bumped up the displacement from a 12A to a 13B was by making the rotor and rotor housing 10mm (I think) wider. Messing with the "bowl" will just screw up your compression ratio.

1Revvin7

Yes, he is right..