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the chimera kit would probably work. but without any bodywork it would assuredly be ugly. i still say the best way to 300 swap is with a custom frame. the single spar doesn't lend itself to vertical engines.
 

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Takes away from the bike totally. I get the appeal of having a faster monkey, but a 300 engine doesn't really make the monkey a fast bike. It's quicker with a better top speed for sure, but what's endearing to a mini-ish bike like the grom/monkey/Z125 is that it is small displacement.
 

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Discussion Starter #4
Takes away from the bike totally. I get the appeal of having a faster monkey, but a 300 engine doesn't really make the monkey a fast bike. It's quicker with a better top speed for sure, but what's endearing to a mini-ish bike like the grom/monkey/Z125 is that it is small displacement.
Thanks for the reply, kinda what I thought. I NEED a 181 though. Just a punched out 125, kinda.
 

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i'm not sure i'd say the 300 takes away too much from the bike. it makes it much much more useful for daily riding if you need to go freeway speeds. it pulls to 60mph without any issue at all and charges right past it without hesitation.

the weight penalty isn't as severe as people think it is. the biggest buzz kill is the range you get per tank of fuel.
 

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Not only do you need to fit the engine, but also the radiator. Most (all?) 300s are water cooled these days as on the R3, Ninja 300, RC390, and GSX250R. Even if you can pair the engine, I would not think the Monkey's 4 speed or clutch would be capable of holding the power from such a big increase in displacement. I would abandon the idea of the bike's appeal as a small approachable machine as the engine would look disproportionate to the rest of the bike.

A BBK seems to be the most logical solution which would give you enough power to comfortably cruise around 65 - opening up a lot more highway routes. How long is the factory warranty again? :)
 

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Discussion Starter #7
Not only do you need to fit the engine, but also the radiator. Most (all?) 300s are water cooled these days as on the R3, Ninja 300, RC390, and GSX250R. Even if you can pair the engine, I would not think the Monkey's 4 speed or clutch would be capable of holding the power from such a big increase in displacement. I would abandon the idea of the bike's appeal as a small approachable machine as the engine would look disproportionate to the rest of the bike.

A BBK seems to be the most logical solution which would give you enough power to comfortably cruise around 65 - opening up a lot more highway routes. How long is the factory warranty again? <img src="http://www.hondagrom.net/forums/images/smilies/smile.png" border="0" alt="" title="Smile" class="inlineimg" />
Well said. I agree on all points. I never really considered it. The appeal of a mini bike is paramount. Follow the Pimp Chimp build on this forum.
 

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Beatle, the transmission is part of the engine. The monkey gear box goes with the motor. When you swap you get a 6 speed.
 

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A better swap would he to find a old 2 stroke 175cc with the 30 degree cylinder and air cooled. Some of the old sub 250cc bikes even had 6 or 7 speed trans. Plus it would look stockish.
 

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Discussion Starter #10
A better swap would he to find a old 2 stroke 175cc with the 30 degree cylinder and air cooled. Some of the old sub 250cc bikes even had 6 or 7 speed trans. Plus it would look stockish.
Almost made me cry, I had a 70s Yamaha DT175A 2 stroke. That would be incredibly cool. Kick my Monkey!!
 

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I had an old DT175 too. Still have my 79 CR125. I think that swap could be fun, but it'd ruin the spirit of the Monkey!
 
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