2 stroke 7.3
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Lead Driver
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2 stroke 7.3
Okay, so I'm not planning on this, or saying it would work.... just a brain fart, so to speak.
1. Install centrifugal supercharger.
2. Change timing somehow so that camshaft is 1:1 with crank.
3. Install camshaft in way that intake and exhaust are open near bottom of stroke.
Anyone think it would work?
I think it might work, I doubt it would make much power, as it was never designed to run like that, but I actually think it might work.
If I ever won a million dollars, I'd buy some beer and try it
1. Install centrifugal supercharger.
2. Change timing somehow so that camshaft is 1:1 with crank.
3. Install camshaft in way that intake and exhaust are open near bottom of stroke.
Anyone think it would work?
I think it might work, I doubt it would make much power, as it was never designed to run like that, but I actually think it might work.
If I ever won a million dollars, I'd buy some beer and try it
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Lead Driver
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Like I said, I'm not seriously considering it; tell me why it wouldn't work?
I know it wouldn't work as an out of the box functional engine, but I can't see a real reason why it wouldn't run
I know it wouldn't work as an out of the box functional engine, but I can't see a real reason why it wouldn't run
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You'd have to force feed it halfway down the power stroke until about halfway up on compression. You'd blow unburned fuel out the exhaust most of the time.
Hours of reading enjoyment on the subject:
Engine & fuel engineering - Why no two-stroke diesel cars?
Toyota experimented with a 2 stroke 3.0 diesel. Nothing ever came of it afaik. Do you have more resources than Toyota?
There are other ways to make more power with the 7.3 or most other 4 stroke motors.
Hours of reading enjoyment on the subject:
Engine & fuel engineering - Why no two-stroke diesel cars?
Toyota experimented with a 2 stroke 3.0 diesel. Nothing ever came of it afaik. Do you have more resources than Toyota?
There are other ways to make more power with the 7.3 or most other 4 stroke motors.
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Lead Driver
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I'm definitely not recommending anyone to try it, but it's fun to imagine
Duct Tape Tech.
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From: San Antonio Tx.
You'd have to force feed it halfway down the power stroke until about halfway up on compression. You'd blow unburned fuel out the exhaust most of the time.
Hours of reading enjoyment on the subject:
Engine & fuel engineering - Why no two-stroke diesel cars?
Toyota experimented with a 2 stroke 3.0 diesel. Nothing ever came of it afaik. Do you have more resources than Toyota?
There are other ways to make more power with the 7.3 or most other 4 stroke motors.
Hours of reading enjoyment on the subject:
Engine & fuel engineering - Why no two-stroke diesel cars?
Toyota experimented with a 2 stroke 3.0 diesel. Nothing ever came of it afaik. Do you have more resources than Toyota?
There are other ways to make more power with the 7.3 or most other 4 stroke motors.
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The Toyota effort goes back a few years, and I can't find a decent link to it. They tried to use a 5 valve design with a supercharger to push air in and exhaust out via the valves, rather than ports in the cylinder. This was an effort to have a clean runner with all the advantages of a 2 stroke. This article may or may not be the right one, but a couple paragraphs down, they tell the tale. Short version: it didn't work:
Canada. Tekron engages in joint venture over new ultra powerful two stroke - bymnews.com
So yes, a 2 stroke diesel will work very well, if you build it that way from the start. Converting a 4 stroke to 2 stroke--not so much.
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Lead Driver
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OK, good point, DEE troits ran just fine. But, production stopped in 1998. They also used lights or ports in the cylinder wall to fill the cylinder. Can't retrofit that to the 7.3 or any other 4 stroke.
The Toyota effort goes back a few years, and I can't find a decent link to it. They tried to use a 5 valve design with a supercharger to push air in and exhaust out via the valves, rather than ports in the cylinder. This was an effort to have a clean runner with all the advantages of a 2 stroke. This article may or may not be the right one, but a couple paragraphs down, they tell the tale. Short version: it didn't work:
Canada. Tekron engages in joint venture over new ultra powerful two stroke - bymnews.com
So yes, a 2 stroke diesel will work very well, if you build it that way from the start. Converting a 4 stroke to 2 stroke--not so much.
The Toyota effort goes back a few years, and I can't find a decent link to it. They tried to use a 5 valve design with a supercharger to push air in and exhaust out via the valves, rather than ports in the cylinder. This was an effort to have a clean runner with all the advantages of a 2 stroke. This article may or may not be the right one, but a couple paragraphs down, they tell the tale. Short version: it didn't work:
Canada. Tekron engages in joint venture over new ultra powerful two stroke - bymnews.com
So yes, a 2 stroke diesel will work very well, if you build it that way from the start. Converting a 4 stroke to 2 stroke--not so much.
The issues with these was that they could not flow enough air at mid to high RPM's.
I knew as soon as I mentioned this, that the airflow would be an issue.
It would still be cool to see a 7.3 2 stroke even if it couldn't make it over 1600 RPM's.
Then again, it would make some nice power at low RPM's with 2x the injections.
I think the stock injectors run out of fuel around 2800 RPM's, so if you fired them twice as often, 1400 RPM's would be "getting ther" anyways.
It would just be cool to see, even though it wouldn't be all that practical.
