user 8202

Whom do you guys know who i can refer to in getting one? Preferably in the states lol.

PercentSevenC

Dunno about in the States, but Jeff Bruce of Precision Engineering in New Zealand can help you out.

user 8202

Contact info?

any body in the states would cost me a whole lot less if anybody knows any one lol.

vipernicus42

iTrader: (4)

Out of curiosity: why?

12a rotor housings are getting bloody hard to find in good condition, and since most people don't make 3-rotors out of 12a parts there is going to be a HUGE amount of custom fab work for you to do to make a 3-rotor 12a work. For example, how are you going to get a stationary gear setup for the middle rotor?

Just thought I'd throw that out there, in case you might have been thinking that you've got a bunch of 12a parts and would just need a shaft to make a 3-rotor motor...

Jon

DriveFast7

iTrader: (1)

Yes, lack of usable 12a rotorhousings will be the nail in the coffin for 1st gens in smog controlled states.

Stricter smog laws in california and targeting older cars as 'test only' in CA put them in the coffin.

PercentSevenC

His email address according to Google: precisin@ihug.co.nz

You might be surprised on the cost. I'm tangentially involved with Jeff20B's "ghetto 4-rotor" build (that actually isn't particularly ghetto), and Jeff Bruce's fees and shipping to and from NZ weren't actually too bad.

PercentSevenC

That part is easy: send an intermediate plate to Jeff Bruce and have him do it for you.

I'm inclined to agree, though. I thought about doing a 12A-based 4-rotor but came to the conclusion that later 13B stuff was the way to go... UNLESS you want to do a side-ported engine. Cool thing about 12As is that the Y casting intermediate plates have really huge runners, narrower than the runners in the end plates but a lot taller. My theory is that they could probably be made to flow almost the same as the end plate runners. That way you won't be starving the center rotor(s) for air in a custom 3- or 4-rotor engine.

On the parts availability issue: getting side plates resurfaced and re-nitrided can be done. Old 12A rotor housings can be cermet coated for about $300 a pop, IIRC. There are those who have doubts about cermet coatings, but at that price, I'd be willing to give it a shot.

DriveFast7

iTrader: (1)

There have been quality assurance issues with cermet rotor housings. There are many other failures that put a rotor housing into the dead bin besides chipped chrome.