Buddy of mine has a spare 13b to play around with and we were joking why not strip the coating off the rotor face, MIG in the combustion 'pocket' and then re work it to bump compression. Then go back and coat it.

The goal Diesel Rotary on mazda parts. But then the idea on what seals to use came up, steel obviously, but are the steel ones heat treated? He has access to heat treating , surface plating, and most other tools(mill) needed for this

Are we outta our mind or is it possible, also before I try and CC the combustion chamber to get an idea, anyone know offhand the size?

 

Yes, you are outta your minds. Diesels work on approx 22 to 1 compression and basically "preignite" on their own. This is very bad on stock mazda parts.

 

Well, he is modifying the stock parts. But, you would also need to re-balance each rotor, balance the whole rotating assembly etc...

~T.J.

 

And i know we are outta our minds, i mean come on, imin mid process of strapping a 10hp brigs&stratton motor(thinking about sprayin it too) to a shopping cart(legally aquired of course) with a seat in the basket and a stearing wheel, will be a great track/car show tool-a-round ride

I know it would have to be balanced. no biggie.

but again are the stock seals heat treated? and the diesel just works on pre-ignition detonation still is bad on a diesel they just work on controlled detonation, like a petrol car. One advantage i see is that a slight increae in power and maybe fuel economy

On average, 1 gallon (3.8 L) of diesel fuel contains approximately 155x106 joules (147,000 BTU), while 1 gallon of gasoline contains 132x106 joules (125,000 BTU)

and unlike boinger diesels, rpm is not a factor due to rotaries design. mmm stupid ideas festering in head.

 

Diesel has been tried in rotaries before, as well as 67octane gasoline with decent results. Isn't Diesel considered a fuel oil or something like that? If so, it would mean the elimination of the OMP and premixing.

 

i got stupid idea's coming up all the time in my little head, and some get really detailed too. i got the full 3d CAD drawing rotating inside my head..

i like the trolly idea.. i can picture it now smoking up the fat gokart tires on the back as its taking off..

and as for the Diesel engine idea, that would be exciting if it actualy work.. keep the thinking cap on! and the thinking juices flowing

 

i just wanna know; what in the hell would it sound like?

 

forget the diesle get it to like 15 to 1 and port the hell out of it! lol

that thing would be a beast!

 

like i posted weight for weight diesel produces more power, and burns a little better. It does have lubrication so i doubt you would have to premix.

And many manufactors make diesel rotaries, I remember seeing online a 3000cubic 6 rotor diesel wankel that made like 2500hp and 3000 ftlbs of trq at a whopping 1500 IIRC

They do make them, i just want to do it outta of mazda components and look at the possiblity of somewhat cheaply making

Mostly i want to reshape the combustion pocket on the rotor face to raise compression for diesel or Alky


If it is I will attempt some 13:1 rotors for my Alky motor going in.

And i would like to know if the steel seals are hardened, if not woulcnt that be great to heat treat the increase detonation resistance

 

You may want to take your question to the Rotary Performance section.

 

We have had leangthy discussions about this in the rotarys performance section, and we basically decided it cant really be done by any at home or shop means. im referring to increasing compression. We talked about inserts, welding etc. The mane reason why it wont work is beacause any material that wouold be used to fill wont expand at the same rate, therefor causing cracking almost immediatly. Al wont hold up steel wont expand right etc. Just can be done without casting new rotors, and no one has the casts or a foundery.

CJG

 

ok food for thought, what is the rotor cast out of?
anyone, and i still havent seen/heard if the steel seals are hardened or not. if so how if known: cryo or heat treated?

 

Ive definatly thought about diesel in a rotary. i know its been done before with good results. Its worth playing around with.