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Exact Parts to Build a 4 Rotor
Hey guys.
Planning on building this beast. Could anyone tell me if I've got my parts list right to build a 4 rotor from (2 x FD engines - Series 6). Rotors x 4 FD plates x5 FD Stat gears f and r ? Oil pump FD Covers bolts 20a set FD oil reg x 1 Cheers Jase |
I think you're missing an e-shaft from that list. ;)
-M |
frog hairs, hen's teeth, board stretchers, left-handed-hammers...
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Was planning to machine both the standard E-shafts together.
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Originally Posted by jase03
(Post 11969404)
Was planning to machine both the standard E-shafts together.
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You will need something to support the center of the eshaft so a plate that holds a bearing and some way to get the shaft in that bearing like a two piece shaft
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1 Attachment(s)
Originally Posted by jase03
(Post 11969404)
Was planning to machine both the standard E-shafts together.
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Yes, that is a tried and true way to make a 4 rotor.
Its not as short as a Mazda Factory Race 4 rotor, but it is shorter than the two 2 rotors coupled together with stock eccentric shafts (which is also tried and proven). This should help the OP- http://grannys.tripod.com/4rotor.html |
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What's your budget on this op? I'd seriously get a 4 rotor done if it costed under 20k but from what I hear from shops it's like 35k+
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TomU
parallel, not in series. Something like... B6 A4 with twin-turbo V8 engine - AudiWorld Forums Depends on the chassis layout I guess. I was thinking F body bellhousing on Corvette transaxle with me sitting in the back seat of my RX-8 and 8 glorious rotors making noise in front of me. Budget 8 rotor RX-8 sounds great. Mines even got the navi (gonna need binoculars for that) so I can plot my routes to all the gas stations between wherever I am trying to go. |
But seriously, someone should do the 8 rotor RX-8 for a $20xx challenge car.
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^Hmmm turbo 4 rotor gonna need a very large gas tank. ;)
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Defined asks 39k for the top 4 rotor he offers on his web site....
By the way: do you guys know what do you get for those 39k? |
Originally Posted by gmonsen
(Post 11969834)
Hey, Blue. I'm in stitches... ;) I know Logan is doing a 4 rotor twin turbo. Should be a smooth 1000 whp or so. I guess the guy just can't get his jollies off anymore with 750 or 800. Just doesn't have that oomph. Logan's also doing a 4 rotor supercharged low budget project probably in the 750-800 range. His pricing is still wrong, so get in line now. His range of 4 rotor NA's is 500-750 hp or so and prices go from $32-35,000 or so. He's miss-priced the high end for sure. And for those us dumb enough to be among the first multi-rotor engine builds, I assure you these prices are cheap. I mean seriously attractive. Undervalued. A bargain. There are many, many people who spent as much as $50,000 or more on a single turbo build. Let's see hands.
The basic parts for a 4 rotor are at least $17,000 and that may be pretty low. The machining of oil passages and other things, the porting, and especially the balancing are all expensive. And you can't do the balancing yourself unless you happen to own a $15,000 balancer already. Trying to get to balanced by Carlos Lopez at CLR is like finding a unicorn in your back yard and adds hundreds of dollars of base cost for the DIYers out there. If you want one and can actually afford to build it yourself, you can afford to have to done right by Logan. Now, it might be pretty cool to add a supercharger to my 20b. Maybe if I get him a few 26b customers, he'll give it to me free... I guess I could see an NA 4 rotor making 550 whp or so in an FD. It would be nowhere near as nuts as getting on boost in a 20b turbo at 80 or so. The linearity of the power makes it more manageable. Actually, manageable, anyway. So, if you want 500-600 whp and can afford it, the 26b NA is about the best motor. A twin turbo 26b is indescribably nuts. It would be rude and insulting to be describe it honestly. I do have something positive to say about it though. It makes a very big statement. G |
Logan is part owner of Defined Autoworks
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Hey guys,
what exactly are the parts needed to make a 6 rotor? I'm thinking of machining two 20b shaft together by the way |
6 rotor is weak. 8 rotor!
See my post above. F body bellhousing on Covette transaxle is 36" long putting 4 13Bs end to end to end to end the front motor is in the stock location on an RX-8. No complex machining required, just couplers between the motors. Make a nice motorcycle like arcing backbone chassis to hold the motors and keep the car rigid after you hack out the trans tunnel. |
so OP you wanted a peripheral port right? Has anyone put a side port 4 rotor on the road before?
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https://cimg6.ibsrv.net/gimg/www.rx7...f4b14ed7a4.jpg
Side ports. Just saying, I think that little tractor has been doing its 4 rotor business for longer than I have been into rotaries (over 15ys)! |
Originally Posted by Monsterbox
(Post 11971916)
Hey guys,
what exactly are the parts needed to make a 6 rotor? I'm thinking of machining two 20b shaft together by the way when you are done you can machine 2 6 rotor shafts together and make a 12 rotor! actually fuck that, if you got 2 3 rotor shafts lying around you should just ship them to me. ill pay for shipping. ;) |
I'll add another +1 for Logan. I used to live in Columbus and was frequently at the shop. He has had a hand in my engine before, and really knows rotaries.
If you talk to him, tell him Fat Batman says hi. |
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