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nice, I mostly use sand because I'm just making aluminum ingots that will be milled.

cool, im gonna be doing a lot more aluminum can melting with my 'forge', because I bought a mini lathe and I'm gonna buy a mini mill. I cant wait to make a gun out of melted aluminum cans lol

looks pretty dope! I have a blowtorch I use to melt aluminum cans in a steel container and I just surround the steel can with old/broken roofing tiles.

Well, at least it looks like they did a good job repairing the block. looks like you got a nice little raptor, only thing I would be worried about is the little dents on the piston.

If I were you I would get a Comet 40 series and put a higher stall kit on it, the horsepower limit is more of a suggestion. If you don't want to go that route you might want to make a jackshaft (gear reduction) setup with a Hilliard clutch. And if you want to do neither and have some money to...

Thanks, I have a lathe (sort of) that I will use to shave off material from the rollers.

Merry Christmas everyone! Hi I own a Comet 40 series TAV and I want to up the stall speed without paying for it, so I am going to shave material off of my stock heavy cam rollers. What I need help with though is the weight of the medium cam rollers (Comet part # 203649) could anyone here please...

it will be moderatly heavy

Correct, but those are more of suggestions when it comes to small blocks, but when you get into big-block single-cylinder and twin-cylinder engines (301cc, 420cc, 670cc) a 40 series becomes mandatory, due to the fact that these engines can produce more raw torque than any 'built' small block...

I would use at least 10 gauge or thicker and reinforce all welds with flat iron or rebar

I have had the same issue with my predator 420 on my minibike and I have changed the springs before. It is a fairly simple operation you just put the clutch in a vise and I use a giant adjustable wrench (available at harbor freight for $20) to take the big nut on the top off. The springs come...

try Monster Scooter parts: Scooter Parts & Accessories: Scooter Batteries, Scooter Chargers, & More : Monster Scooter Parts that's where I get all my 50cc Chinese stuff

If you are running a clutch you WILL NEED a gear ratio of at least 6:1, otherwise, you will burn clutches instantly (I've done this with $150 clutches) so if you go the clutch route you have to build a jackshaft. As for the CVT option, I highly suggest the go power sports 40 series it's much...

you are going to get high-end power, but less power at the low end. As for your CVT you definitely don't need a 40 series just get a genuine comet 30 series from go power sports.

This looks really promising! It reminds me of what my builds could be if I spent the money! haha, that little engine is gonna be a blast once it's assembled! btw I can't believe that you had these parts sitting around since 2013! cool project so far! #bigblockgang

@RB55_2018 forgot to ask are your valve measurements hot or cold?

the juggernaut is a 30 series driver with a 3/4 shaft diameter. I have a 40 series TAV with a 1in shaft diameter

right now I have a gopowersports 40 series going to a 50t rear sprocket making 46MPH at 3.6k RPM

Thanks I actually have a 34mm carb I am going to put on it forgot to mention, When I get some more $ I am going to buy a .308 cam as well as 3.1 rockers, moly rods, custom oil cooler, pcv valve, and a supercharger

I recently purchased a billet rod, billet flywheel, and 65Lbs dual valve springs for my predator 420 engine the only issue is I don't know the valve lash for this engine... anyone know the valve lash for this engine? p.s anyone have suggestions on what to upgrade next?