Maintenance & Technical > KX500 Super Motard
Need an answer to my Ignorance please
Dragondude:
With my limited knowledge of 2-strokes, how is it possible to turn a 2-stroke into a street machine? I always thought they would blow-up or wear out so much quicker because they weren't made to run at an high RPM for long periods of time like a 4-stroke. I know that out-board 2-stroke engines on boats do it but I still can't wrap my head around it. Please do explain how you guys can run them on the road without blowing them up.
motopunk:
4strokes are better for street...
2 strokes need a much richer jetting for street use. with mx- or offroad-jetting on longer high-rpm-distance on street, makes them run to lean and kaboom... :evil:
the guy who bought my 2000 gasgas ec300 in 2003, had blown this engine in only a week, on street use only. as he picked up the bike i gave him a list with the right jettings in mx, offroad and street . he ignored that and a few days later i had the engine back on my workbench for a complete and real expensive rebuild . the piston was new with only 3 hours as i sold it... and the idiot had damaged the cylinder so hard, that the welder said : no way! and the engine needed a new one ... :roll:
alward25:
Ran my 500 on the street a lot for 3 years. Lots of fun gear and jet accordingly. Use a tach like a tail tech vapor to tell how hard u are turning at cruising speed and keep on top of it mixture wise so you can ride it a long time. Great parking lot conversation starter too :-D
Dragondude:
--- Quote from: motopunk on May 06, 2013, 08:46:05 AM ---4strokes are better for street...
2 strokes need a much richer jetting for street use. with mx- or offroad-jetting on longer high-rpm-distance on street, makes them run to lean and kaboom... :evil:
the guy who bought my 2000 gasgas ec300 in 2003, had blown this engine in only a week, on street use only. as he picked up the bike i gave him a list with the right jettings in mx, offroad and street . he ignored that and a few days later i had the engine back on my workbench for a complete and real expensive rebuild . the piston was new with only 3 hours as i sold it... and the idiot had damaged the cylinder so hard, that the welder said : no way! and the engine needed a new one ... :roll:
--- End quote ---
So in other words, run the carb with more fuel and bump up the oil:gas ratio? Another stupid question, are they more for around town bikes or could i run it 5th gear, half throttle for a long time without blowing it up?
Ims Roll:
you wont have any fun running it as anything besides a run around town bike, even my ktm530 xc-w dosn't enjoy cruising at anything over 60 and thats a wide ratio big motor 4 stroke.
Navigation
[0] Message Index
[#] Next page
Go to full version