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I know tons of RXs/RDs which pollute less than any 4 stroke and would pass BS3 and all easy. They just run the RDD CDI.
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AMD Me
http://torqu3e.blogspot.com/ -
From what I know, no matter how brilliant the CDI is, it will never eliminate shorting due to port overlap. It's a design defect that can only be supressed.
Some doubts, sir. Mostly pertaining to my ignorance on injectors.
1) Won't the flame propagation time available reduce due to relatively late fuel injection?
2) If the bottom half is acting as the supercharger, won't the pressure come in about 180 degrees too early? Is there a buffer?Comment
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To give u a better picture ,it is a 4 stroke fiero engine being modded to a 2 stroker.So no need for the bottom engine to do any pumping work,the exhaust valve is eliminated and using a port at BDC for exhaust.Inlet is still via the regular 4 stroke valve.Originally posted by Jokerman View Post
cheersComment
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eagerly awaiting further developments sir.. i've been hooked onto your engine development escapades.. i do believe if someone can make 2s's work today with regard to meeting pollution norms it'll be the best thing that happens to automobiles in a long time esp to motorcycles.. do keep us updated with some tech details and pics sir..all the best !!Comment
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planning to get some pics,will post em .
cheersComment
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Venu sir - A few questions:
1. Having the exhaust port at BDC raises a few issues in my head. The first is that the piston crown in a 2 stroke engine is cooled by the incoming fresh charge. By having the exhaust port at BDC - the fresh charge is used to push out the exhaust gases? In this case there may be overheating of the piston crown?
2. Will the piston sleeve block the exhaust port when piston is at TDC? Stupid question possibly...but if not - won't the exhaust gases get sucked back into the crank case as the piston moves from BDC to TDC (similar to 2-stroke crank induction)
3. Do you foresee any other issues in converting a 4-stroke engine to 2-stroke? (particularly with the head/crank etc.)Kriss : 15.06.1981 - 11.10.2009
You will not be forgotten...RIPComment
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Dont get me wrong, but I can see a lot of excitement in your comments than the actual fact. Lets not talk about ANY-4stroke also then.Originally posted by torqu3e View Postsigpic
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1)The crown is cooled by a jet of oil from the crank case as in a regular fieroOriginally posted by gsferrari View Post
2)off course it does,with pics u can be a better judge
3)need to find that out myself
cheersComment
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Waiting for the pics.....Comment
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Yesterday the bike was despatched to tiruvananthapuram ,today being the last day to submit the project for the boys.Happened due to mis understanding of the dead line.It just needed setting of fuel injection pump timing and delivery volume.Too bad ran out of time,here are the pics.
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Did the engine crank up successfully Venu sir???Fun Starts at Redline!!!Comment
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Like i have said ,it had about a days work left.but no time.
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As a matter of interest, a picture of a Super Charged HARLEY noticed at Sandy Hook, New Jersey is attached.sigpicComment
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can we have more details on the build ?
how exactly was the 4S converted to a 2S ?Last edited by themadrussian; 07-02-2009, 10:29 PM.Comment
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Also what boost pressure are you planning to run and what internal mods will be done so that the piston etc. can handle the boost ?Comment
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