Would like some feedback please!
If there was a company that made aftermarket rotor housings and side housings, what types of changes, improvemants, and or choices would you guys want from a aftermarket perspective? And how big of a market do you think it would be? Who would be interested?
Please, let your imagination run wild. What would be the best rotor housings and side housings that you could think of? Aluminum? Re-inforced areas? Coolent flow? Spark plug configuration? Injector pocketing? Port design?
Feedback please!
Oh, and try to take this seriously please...
Thanks!

 

*shrug* To the rotor housings, a bit of alteration to the casting where the lead plug is and some changes around the water jacket in places, neither of which changes I'm going to get very specific about. Possibly added 3rd late trailing plug (R26B style) if only to experiment with. Maybe the RX-2 style additional dowel up by the oil gallery.

Side housings, I'd really like to see a normal-width intermediate plate designed from the start to take a stationary gear (one of the 20B ones or otherwise) complete with oil journals to it, and an iron modified to feed coolant into the middle iron of a 4-rotor engine as well for more balanced flow. Larger oil pump passages on the front iron, or possibly the pump provisions eliminated entirely for dry sump usage. In the case of keeping the pump, no provision for the front cover to get oil, and both oil gallery plugs on the side left out and the holes threaded. Larger port runners without running out of metal on the intermediates too, and 13B-RE size runners on the end plates. That and provision to do all of them out of aluminum with flame sprayed cermet, ala the RB jobbies and for the same reason.

Market and whatnot, damfino. I'm an engineer, not a business major.

 

I'm a business major, don't try to re-invent the wheel.... Or don't expect to see profits from it anyway.

 

Some aluminum street-ported side housings would sell like crazy if you could keep them around the $500 range.

Also, it would be nice to see a decently priced 20B thick housing to ease concerns about the supply drying up. Sales would be minimal due to the small number of 20B engines, but it would make for good advertising.

 

+1 on aluminum side housings (both old and new styles) that are affordable to the small-fries (like myself) - include injector port on the old styles a la SE. the $500-range is good ...

keep the ports (as sold) limited to stock sizes and timings, but keep enough material around them to allow us to port as radical as we see fit.

 

I've always wondered why an aluminum side plate couldn't be made with a steel insert or wear plate. It could be inserted at the casting point or, just maybe, afterwards and thus being replaceable.

That would be sweet.

 

This is good! Keep'em coming....

 

Lynn E. Hannover on Nopistons posted a picture of a aluminum housing w a replaceable wear section. It was cool. You might look over there. I know it was made by a aviation fellow.

 

I thought Racing Beat sold Aluminum side housings?

 

I don't think any of the previous aluminum housings required a steel wear plate. The old Mazda racing aluminum housings worked great in endurance racing, and I assume the Racing Beat aluminum plates have excellent wear too.

I'm not sure, but that may upset the special treatment on the housings. If it doesn't cause problems, then the stock porting would be good. Otherwise, street porting would sell the best in my opinion.

http://www.racingbeat.com/resultset....rtNumber=11051

 

I knew I wasn't crazy.

That was your 5,555th post also. Keep rocking!

 

The new larger displacement 16x rotary will have aluminum side plates. Hmmm maybe Mazda will manufacture a set for the older 13b's? Fingers crossed!

 

well, i don't really understand what you mean, but if there is a problem with it, then a decent streetport would be my next choice. i just figured since some guys actually want stockports, then it should start there. personally, a big streetport would be MY first choice, but whoever is actually selling these would probably have to think in terms of covering all customers.

on a more self-serving note, could you explain a little more on the "upset the special treatment"-part?

 

My assumption (which may not be correct) is that the aluminum housings have a surface treatment that reduces wear. If one were to cut away any metal, the surface treatment on that area would be gone, which would expose the untreated aluminum, weakening the component.

 

peripheral port with an actuator to turn it on and off!!!

 

Lots of metal around the dowels. Stationary gear bores machined for a slight interferance fit with helicoils installed.

I personally like the idea of a stock port with extra material. This will allow it to be bolt on while still permitting everyone else the ability to port it the way THEY want it. This is the way the manufacturers make cylinder heads for racing circuits. When we got our heads from dodge for our cup engines the ports where about the diameter of a quarter, we then cut them how we wanted them. I also think that having "taller" secondary ports, that have a more gradual curve rather than being straight with a 90 deg bend at the end will produce more power. This would also give more beef for those doing bridgeports on those housings.