The universal minibike info/build/picture/parts thread.

So which is the one you had to carry home from work? :lol: Sorry, I shouldn't be laughing, but I did get a laugh out of the story.
 
I took the 3.5 briggs off my blue one tonight so I can test fit the new harbor freight engine. That old briggs was leaking oil pretty badly, boy what a pig.
 
Tin said:
So which is the one you had to carry home from work? :lol: Sorry, I shouldn't be laughing, but I did get a laugh out of the story.
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Like Matt said, blue jean bike. I bought the it for like 25 bucks, and it had been sitting in the shed. It was a Friday night, and me & all my buddies were going somewhere and bring our minibikes (sins of steel maybe?) Anyways, we needed a spare bike for someone so we threw it together in a few hours. I made the seat, and needed something to cover it with, so I cut up an old pair of blue jeans. Hence the name. That bike was the most maintenance free bike I had.
 
You can relocate the gas tank. As long as it's above the carb, you won't have any fueling issues. I had a similar issue so my brother found a Honda tank with the cap in a better position. Rotate the puller too so the rope handle is at the back.
 
My minibike had all the NRracing parts plus the head was milled .050........Had a blast at Milan in the pit area racing friends and kids...it did about 58-60 but you still could flip it over backwards sometimes.......Back then i was up about 4 hot dogs and a cheeseburger...






 
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Got to thinking after some searching on the web. All the after market add on tanks are pretty over priced.
So I drew up some thoughts/ideas for the stock/factory fuel tank. Then I fabricated up a couple brackets.
tank brkt.jpg
brkts4.jpg
I just turned the entire tank around and faced it backwards.
 

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We tried a 14cc GX140 head and the compression was way too high to use a recoil starter and broke the OEM Predator recoil. We replaced it with the OEM Honda shroud and recoil off of the GX140 we have :lol:
CC3Kann.jpg


Now the head is hogged out and port matched to the header and intake manifold, heading to Howard's today for bigger jets and higher stall clutch springs. Current springs engage at ~1200RPM, new ones will be 3000RPM, little bastard is gonna fly :D. We swapped the 75 tooth for a 60 tooth as well, now it'll top out at 70-ish at 8,000RPM.
4Vm6dtZ.jpg
 
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