Hi everyone,
we`ve got an interesting order to build triple 4 rotor engines for the boat.
each engine should be turbo and provide 1200HP or so.

who is making lately best 4 rotor cranks and modified center plates?
i bought parts from Jeff Bruce before ( 3 rotor sets) but was actually not 100% satisfied with quality...

kiwi , as long as i know, is using jeff bruce`s parts as well.

please advice!
Ivan

 

READ THIS LINK

Can you please provide more information about "the boat"? Your car is really nice, and as such, I have a higher than usual (as in existent at all) belief that something may actually come of this, and I want to see it.

That link points to MPS in canada, which is apparently the best money can buy, but it's gonna take some serious money for what you're talking about.

More info please.
ryan

 

One of these three links may help:
http://downingatlanta.com/downingatlanta/
http://www.hurleyrotary.com/
http://ccn.aitai.ne.jp/~engineer/

 

lots of money and most of lots and lots of time

 

I am sure he hadn't figured that out.

 

Dude your best bet is to contact Rohan at Xtreme rotarys/Guru because they are currently replacing the 20b from their ski boat to a 4rotor.. Jeff Bruce stuff seems to be the future of multi rotor setups because he's the only one thats making a kit for the public.. Autotechnic (sp?) in CA built a 12A based 4rotor engine, but im not sure if their kits are available to the public..
A few months ago I was speaking to a well known Australian tuner about the kits that Jeff has and he told me that the idea is right but the workmanship needs improvement... Bacically he told me that the "machining wasn't all that great, it's kind of half ***" BUT if the right workshop get those same parts and do the final touches then you would have a stout engine... ie. KiwiRE = Major League
Speaking of Major League... When Siguel was at Etown with MJ over the summer, I spoke to him about the "short Crank" motor and weither he likes it or not.. He told me that he prefers his 20b, and the other thing that caught my attention was how his 20b had a higher red line than the short crank.. The shorter motor does seem to have its advantages but from what it looks like, it needs fine tuning...

Maybe if someone send out the billet shaft & rotors to Racing Beat to have them lightened & balanced then maybe this could help with the machining issues those guys talked about? dunno, guess we'll have to wait till i get my kit ;-)

 

Try http://www.autotechmotorsports.com

 

thanks for all your replies!
i do understand how complicated this task is and we are enough experienced with rotary engine assembing and tuning. we did several 1000+hp 3 rotors including short crank based.
i just wanted to know who is making 4 rotor cranks and modded housings at this time...
probably there is an also solution to order some new custom ones from crower...

i met Rohan at the PRI in Orlando a year ago, thanks for reminding me to ask him!
but before his reply on any of my questions was just like the following "buy ready to use product from us, we do not share our secrets"
this is well understandable but unfortunately ( or fortunately?) reselling engines is not our business...

 

I understand your concern with the Precision engineering 4-rotor kit. rather than tell you about the defects that have been pointed out in them. I would rather point you in the right direction.

Contact "Rohan Ambrose" from GURU motorsport at http://www.xtremerotaries.com

You will be very impressed with the 3 + 4 rotor kits they do plus the 4-rotor engine they are doing for a race boat now that their 3-rotor race boat engine has peaked in development & been removed.

They also do their own centre bearing plates in a 2-piece aluminium design. Made on a CNC machine they have far more "meat" around the stationary gear than the OEM centre bearing plate that allows more boost to be pumped into the engine without the fear of breakage. To look at them closely is to admire a work of art

REgards