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Beavertail/Honda 13hp Upgrades
https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=6&t=48702
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Author:  JtrottaNY [ Mon Dec 30, 2013 9:31 am ]
Post subject:  Beavertail/Honda 13hp Upgrades

Any bolt-on upgrades that would help squeeze a bit more power out of my GX motor? It looks like this is a fairly popular karting engine, have found a few parts, carbs, cams etc. online... anyone have any experience that can vouch for the results of these upgrades? - Im not looing for 1/10th of a second on the track but hopefully some noticable difference in speed and push through the muck...

Author:  SouthernWake [ Mon Dec 30, 2013 8:48 pm ]
Post subject:  Re: Beavertail/Honda 13hp Upgrades

Get a candy cane header and rejet the carb. Also add an aftermarket air filter/more open. Then pull out the governor if you haven't already.

Author:  Mark F. Cheney [ Tue Dec 31, 2013 4:52 am ]
Post subject:  Re: Beavertail/Honda 13hp Upgrades

I have looked at this question long and hard for several years. If you're going to mess with your motor:

There are some good tutorials on affordable go karts web site

put a tack on it. stock components will generally go to 5,000 Rpm with out a problem. A tack will keep you out of trouble , they are cheep and give invaluable feed back.

up grades are worthless with the governor still in the motor.

the most bang for the buck comes from a more free flowing exhaust.This is next after a tack.

You should rejet the carb to get the max out of exhaust improvements. This is just a bit of fiddleing to do and costs maby $5 - 6.

after the above you will probably need a new prop to take advantage of the difference. This is likely to be the most expensive part of the up grade.

Mark F. Cheney

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