Cummins two stroke - Page 2
 

Cummins two stroke

Started by benherman1, August 23, 2020, 11:11:24 AM

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chessie4905

Yeah, we worked on those Mazda rotaries. When they were still using points and dual distributors setting points and timing was a real bitch. The early engines drank oil. Mazda started replacing the engines. The newer RX7's didn't  burn any. Interesting power curve. Torque didn't  drop off, just kept building. No valves. You could rev the rx2's to 10,000 rpm and it wouldn't  hurt them. No valves, just ports.
GMC h8h 649#028 (4905)
Pennsylvania-central

pabusnut

I am not sure it will make it to the "street".

If I remember my dark dark Environmental Engineer days, the military tactical engines were somewhat exempt from all current "street" engine requirements if strictly tactical off-road, i.e. TANK!!  I think that is why they can and still do run at least some two strokes in TANKS.

I did love "my" military multifuel diesel truck engines, where I could "dispose of" old gasoline without having to pay hundreds of dollars to dispose of gasoline as hazardous waste(yes-toluene is hazardous and in gasoline).  I had help shielding the last one from transfer to disposal for a couple of years, but eventually the accountants found it and made my unit turn it in!
Steve Toomey
PAbusnut

uncle ned


I remember rotary engines having oil injection to oil the side seals and main seal on the rotary.

Most experience came from Suzika and Hercules engines.

one of the reasons for bad emissions.

been a few years.


uncle ned
4104's forever
6v92 v730
Huggy Bear