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2 stroke 80cc engines
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Posted by: sweet300ex

Ok say you would take a 80cc 2 stroke engine and put it into a 300ex or blaster frame how would it perform compared to a stcok 300ex or blaster?

Posted by: lex luger

you know crack/cocaine is illegal?

Posted by: sweet300ex

dude i was just curious you dont have to call me a druggy

Posted by: jarred15801

he was talking about like a yz80 or cr80 engine not some 80cc fourwheeler engine that goes 35

Posted by: lil400exman

there fast and light man good combo for young racers.................................

Posted by: lex luger

80 cc dirtbike motor, thats what 5hp? thats not hardly moving a 150-200lb wheeler frame, well it wont be worth it...

Posted by: Fred55

5hp??? YEAH RIGHT! Those suckers are FAST! You would deff beat a 300ex and a Blaster. They are liquid cooled, 85cc 2 strokes....that make like 20 or more hp??

Posted by: bradley300

i got my buds cr85 to pull 4th gear off the ground, i'd say with a little motor work, a cr85ex would walk all over a 300. the 300ex is only rated at about 15 horse, i gauruntee a cr85 has that at the least

Posted by: zfire_28

Im not sure what magazine it was, either atvSport or Dirtwheels, but I seen someone sent in a pic of their kids 400ex with a 80cc 2 stroke motor. it said the kid races it.

Posted by: KrazyKid300ex

in one dirtwheels there were 3 kids, two with 300ex's with cr80 engines and then a 250r arens frame with a cr80 engine. A kid i saw in my pit area has a blaster with a cr80 in it. That thing walked all over my 300. i was thinking of doing this mod one day but getting a different 300 to do it with. i'd bore as big as possible and put it into a 300 frame with sus. mods. Oh and this blaster had hipers in rear and elka front shocks, piggyback. (didn't see rear) i thought it was a blaster until he stopped and i pulled up to say nuice quad and noticed a radiator. i asked and it was a cr80. this kid is 9 years old and is 9th in the state. this thing was awsome and i didn't race because i knew that thing was going to walk all over me. IMO go for the engine swap. Maybe bore the engine first.

Posted by: kwatts400

It should turn out alot faster than your 300. Those little 80's are really quick.

Posted by: CHAUNCY

If your not gonna race it just get a kx100 engine and put it in the frame of the 300ex. Someone make a 117 kit for it.It will have more power than a 80 but I dont know what class you would race it in

Posted by: Glow Plug

why not a 125 engine?

or even a 250f that would be cool

Posted by: Jellyrolls

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Posted by: CHAUNCY

quote:
Originally posted by Jellyrolls
.

I dont think it worked if you were trying to post a pic

Posted by: Jellyrolls

i wasnt trying. the forums are screwed on my pc..??? and i was makign sure it was still working

Posted by: yamahaCal

my 02 yz85 has 29 hp on the title this thing has the front tire popping up through all the gears with my 200+ pound friend and uncle. those have serius balls.

Posted by: CHAUNCY

quote:
Originally posted by yamahaCal
my 02 yz85 has 29 hp on the title this thing has the front tire popping up through all the gears with my 200+ pound friend and uncle. those have serius balls.

Yeah, they are little screamers. They are a blast to ride

Posted by: bodge

maybe 29 hp at the crank, but like 18-20 at the wheel. and in a quad chassies it would be even less. id say like a 125 or bigger 2 stroke or like a 250f engine would be the ticket.

Posted by: Butters

had anyone ever done this or have pics? i am interested in put like a 125 motor in my 300ex and wondered how hard it would be. any ideas?