Hey all, I recently picked up a 2 stroke motor from a snowblower to use on one of my projects. Rated at 6.5 hp with 141cc, what size carburetor should i run and what kind of pipe? I was thinking a 24mm carburetor and i recently picked up a world circuit pipe from a kx250 that im going to cut and weld onto my flange (and make it shorter), is this a good pipe to use or do I need something different? also, are there any extra mods I can do besides a carb and pipe? i know I can port the cylinder but thats really all i know
snowblower 2 stroke modifications
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sorry if i didnt give enough information in my first post
its a toro R Tek which is a piston ported lawnboy Duraforce
i pulled it from a toro ccr 3650 and and im planning to put it on the back of an e scooter i gutted and stretched 6 inches
i just wanted to know if an MX pipe like that one from a kx250 would work with some modifications (id be willing to cut and re weld if needed for a better suited pipe or just to fit in general) and any other performance besides a carburetor and pipe
its a toro R Tek which is a piston ported lawnboy Duraforce
i pulled it from a toro ccr 3650 and and im planning to put it on the back of an e scooter i gutted and stretched 6 inches
i just wanted to know if an MX pipe like that one from a kx250 would work with some modifications (id be willing to cut and re weld if needed for a better suited pipe or just to fit in general) and any other performance besides a carburetor and pipe
Sorry, I have no clue. I think maybe you are asking the wrong crowd, but there are a whole diverse bunch if individuals here. Maybe someone can help you.
Is there a forum for people who modify 2 stroke snowblower engines to use dirt bike carbs and exhaust on electric scooters?
I do some oddball stuff, but that is a new one for me. Good luck,Friend!
Is there a forum for people who modify 2 stroke snowblower engines to use dirt bike carbs and exhaust on electric scooters?
I do some oddball stuff, but that is a new one for me. Good luck,Friend!
Put your cylinder in a lathe and machine .030 from case surface to increase squish and compression. This also advances port timing. Find a expansion chamber for an 80cc motocrosser. It has volume better suited for your motor. 250cc pipe will make it a dog. Be sure to check squish when reassembling motor and add base gaskets to give it about .020 for starters. If you don't understand what these things are I have described, you may want to study a bit of 2 stroke engine theory before attempting this project. A good air cooled 80cc motocross motor will pull 18-24 horsepower. It's probably a better plan to find one of those and use it.
im newer to 2 strokes but i have done a little bit of research. Ill see if i can find a 80cc exhaust. But would a 125 exhaust work as well? reason i chose this engine is i wanted more power than the smaller 50s or 35s ppl put on scooters like these, but also not go too crazy on. I also seen that 2 strokes like bigger carbs, so what size should run on this? ive been thinking either 20-24mm is a good size for this motor but let me know if im wrong in assuming
i want the response and powerband to feel like im on a 80cc mx bike
edit: i also wanted to have the same feel of using industrail purposed engines and making them more powerful, like the predators and honda clones
i find it much more fun than somrthing like an mx engine
i want the response and powerband to feel like im on a 80cc mx bike
edit: i also wanted to have the same feel of using industrail purposed engines and making them more powerful, like the predators and honda clones
i find it much more fun than somrthing like an mx engine
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Your engine was never designed for high performance or throttle response. Your yard engines are built for long service life at mostly fixed speeds. Lower your expectations here. You can give it more power by increasing air flow and helping scavenging at running speeds but it will have its limits and will shorten its service life and possibly break stuff. Most industrial engines peak at 4000 RPM. Spinning it faster will make more power. Most 2 stroke engines use small carburetor to limit engine speed. Bigger carb will increase airflow and speed. Too big will make it a slug at low speed. Machining cylinder base and increasing compression will make it respond to throttle better and porting cylinder will make it rev harder. You can raise exhaust port and cut an inverted rain drop shape and raise intake port ends in a smile shape to help port timing. Your engine was not built for performance and probably doesn't have transfer ports so there isn't much more you can do for it. Be sure to run a rich oil premix also. 25-1 is best for performance and reasonable engine life. Maxima 927 castor is the hot shit 2 stroke oil for performance. Be sure to source correct heat range plug in platinum for the weak stock ignition in that thing.
im planning on going around 45-50 mph. I want it to have that range so i can cruise around at lower rpms as to not be revving it out all the time. Im building it for college travel and to cruise with my buddies, i do want to get fatter tires but im not sure if they will fit my forks or my rear wheels
what size would be good to run?
what size would be good to run?
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In which state is it legal to go 50mph on the street on a 2 stroke scooter?
2 strokes live at high RPMs i'm not familiar with that particular engine but if you're looking for low RPM performance, a 2 stroke would not be my first choice.
Not trying to discourage you at all, just trying to answer the question.
2 strokes live at high RPMs i'm not familiar with that particular engine but if you're looking for low RPM performance, a 2 stroke would not be my first choice.
Not trying to discourage you at all, just trying to answer the question.
yeah it seems like they are just typical scooter wheels 10x3.00-4 tires
i seen that 4.10/3.50-4 tires are bigger and i did find some higher performance street tires. if switching to 5 inch rims is an option with good street tread, then i will definately hop onto that
currently its a 35 tooth rear sprocket cause i didnt want to go past the diameter of the wheel. probably going to use a 10 or 12 tooth front sprocket on a 40 series converter (since it has a 1 inch shaft)
i seen that 4.10/3.50-4 tires are bigger and i did find some higher performance street tires. if switching to 5 inch rims is an option with good street tread, then i will definately hop onto that
currently its a 35 tooth rear sprocket cause i didnt want to go past the diameter of the wheel. probably going to use a 10 or 12 tooth front sprocket on a 40 series converter (since it has a 1 inch shaft)