gas tank/chain question

jonnypyro

New Member
Nov 3, 2008
2
0
0
massachusetts
hi i just recently installed a 80cc kit on my 20" bmx. it wouldnt fit inside the frame so i mounted it up top. the supplied chain wasnt long enough so i went out and bought a no. 40 chain. will this work ok? also, is it possible to mount the gas tank on the side of the engine or below it? or does it have to be above ?thanks for your help.
 

misteright1_99

New Member
Mar 21, 2008
716
0
0
Treasure Coast, Florida
The gas tank has to be ABOVE the carb because it is gravity fed, unless you get some kind of pump. The chain MIGHT be too wide, although the pitch and roller diameter are the same. The stock chain is #415, they dont list it in the chart, but as I remember it is 3/16" wide. I use #41 it is 1/4" wide on my MB, the #40 is 5/16" wide, so it is 1/8" wider than the stock chain, so check your width for engine clearance. See the link for dimensional info.

Chain, Links and Guards for Go Karts and Mini Bikes
 
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2door

Moderator
Staff member
Sep 15, 2008
16,326
124
63
Littleton, Colorado
Weird! I even looked at that thing in a mirror and it still looked backwards. But, if you're going to have a gas tank I guess it has to go somewhere.