Don't need the SBC, just a Turbocharger, A fuel injector, a combustion chamber, and some beer. http://www.youtube.com/watch?v=l-spt7y1v6Y
I grew up on YZ 80,s.....then honed my skills on YZ 125,s....I lived by the YZ 250 for almost 10 years. all I can offer is this... "the chewbaka defense" "Ladies and gentlemen of the supposed jury, this...is Chewbaka. Chewbaka is a Wookie from the planet Enduron. But Chewbaka lives with a bunch of Ewoks on the planet Endor. Why would an 8' tall Wookie live with a bunch of Ewoks on a different planet? Does that make sense? "It just dosent make sense"
tall deck truck motor (427 chevy), flat top pistons with high pin center, real long connecting rods, blower... maybe, but not worth it. definitely need direct injection. would have to have the exhaust start opening the lower part of combustion stroke (maybe 2/3rds down) and have the intake open about then as well, shut it as soon as the piston starts coming up again (fuel injected little before TDC). ignition is another problem that needs worked out. dont think she would live too long though even if you could get it running...
The next one to consider is a 6 cycle engine. Look it up on the net. Crane Cams owner got one running. Dosen't need a cooling system. Ice man
Pir8Darrell Come on. I still have the HRM that Borke was on the cover. For years the Borke two stroke generated more mail than anything HRM ever printed. Maybe still. I always heard the Scotch Yoke was the weak point, but don't really know. Love to hear more about it.
Read about that one. Sounds great until you remember that you still need to carry water around. Just not in the radiator. Clean running though.
Actually, I'd like to know more about the engine myself. I wanted to go and work for a company in England that was developing the engine for commercial and consumer applications. GM didn't want me to leave... Then some "things" happened with the company in england.... Then I quit working for GM... Then I contacted a lawyer. Unfortunately, that's all I can say about the situation. I hope you can understand.
Here's another thing to ponder about. Don't know why no-one has mentioned this yet... If at all possible, a V8-two stroke engine with a regular '4-rodjournal' v8-crankshaft will mean that 2 cylinders are firing at once all the time. It will 'run', but like a 4 cylinder.
General Electric was using a 4-stroke diesel the last I knew, but the Electro-Motive Diesel (which was formerly Electro-Motive Division of General Motors) used a 2-stroke up to the most recent models. Detroit Diesel also is (was?) a GM division.
Ok not to be a dick or anything But sometimes i think your just running your post count up...I am relieved that you covered your ass as far as Tman is concerned though with the spelling shit in the sigline but what about pronunciation ??? jesus christ thats a big word Dave
the way I this happening is first you would need a supercharger with exhaust recovery (basically a turbo with a extended shaft with a ac clutched pulley for low rpm spool up), second direct port injection and as the piston travels down from tdc: 3/16 to 1/4-exhaust starts opening 3/8-intake starts opening 1/2-exhaust closes 13/16-intake closes 7/8-fuel is sprayed this is just a suggestion but interesting trend
i disagree. in the last few years since 4strokes have taken over the mx world. 250cc's are probably the most sold engine size in a dirtbike. dont forget there where alot of 500ccs and also u have snowmobiles that get up to a 1000ccs and seadoos/pwc. if u had a small block v8, u wouldnt even need the head with valves or a cam. the ports would be in the sleeve. or atleast thats how id design it. also when it comes to smaller 2 stroke engines, i think they are way easier to tune then a car engine.
While there are many types of engines that are capable of converting a combustible fuel into kinetic energy, efficiency isn't the only factor involved in the design. There are many engines that are more efficient in terms of fuel in versus power out, Stirling engines being one of them. Gas turbines are terrible in this regard, but we still use them on airplanes, a field where billions are spent on research and design. Did they miss the mark on this one? Is there some conspiracy with court mandated gag orders involved? I don't have the evidence to know. The idea I'm currently entertaining is that the ability to manufacture an engine, be serviceable, to have a long service life, to be robust enough to operate in a large array of conditions, to be self sustaining and startable and a host of other parameters are involved with the decision to develop and use an engine. This whole deal seems to flash back the old water powered car and 200 mpg carb rumors that everyone knows to be true in spite of having no evidence to prove it. What are the touted virtues and evidence for them of this unconventional motor?
ya know, this is one of the most interesting posts and it's been civil. are you SURE this is the HAMB? i know jack shit about 2 strokes except i always had to kick start mine unleaded premium and belray smelled good to me....
http://www.aaenperformance.com/V4_racing_engine.asp Connect two of these and You will have a V8 "sort of"
I knew it.! You are an engineer! A tp secret super duper motor making engineer! I cant beleive this is still going on. There should be a prototype by noon today.
FWIW- "Back in the day", when I was in Hi Skool, there was an article in HRM (I think) about a gearhead that had put a Johnson/Evinrude V-4 two stroke on a VW transaxle in a 'Baja Bug'. His problem was cooling the engine; had a big ass radiator that added a lot of weight in the rear, but the SOB had a flat ,high torque curve that wouldn't quit. Anybody ever see one of these or have some more info? Hook two of these together and you'd have your V-8 without having to re-engineer a SBC into something it ain't and wasn't intended to be. I'd guess that the crank on such a monstrosity would have to be something pretty exotic to stay together. Damn good discussion- some really off-the-wall but viable ideas- keep it up!
dont worry jusjunk..post count dont mean shit..dont mean nothing to me, and im sure it dont mean nothing to you.. at least i dont post shit like some people i know..like one word replies..like Cool!..or awsome..or wow!
I'm gonna jump in and run my post count up too. Part of what was left out about how a Detroit Diesel is able to run is becaue of the supercharger. It pressurized the air box at the base of the cylinders to provide a fresh charge of air to the cylinder and to force out the exhaust when the pistons are low in their cylinders. A two stroke doesn't have the ability to create vacuum. The Detroits with turbochargers still had the supercharger to mechanically charge the ports. I think a guy would be creating breathing problems by trying to have the intake and exhaust action at the top of the combustion chamber.
Excuse me? But a two stroke creates vacuum every time the piston travels up the stroke. That's what pulls the charge into the crankcase in the first place. But I guess that doesn't count...
when its comes to power on smaller two strokes in regards to cc's a 2 stroke will ALWAYS make more power then a 4 stroke of the same cc.
Prior to the invention of the expansion chamber (exhaust) two strokes were nothing more than economy rides to get to work. Before WW2 DKW raced a blown two stroke 350cc. The blower doing the scavaging that the expansion chamber would later do. But without the expansion chamber the two stroke is not as powerful or efficient as a four stroke.
The Jalopy Journal
