Wanting to start 212 Hemi harbor freight build Need some guidance

Mini Bike & Go-Kart Parts

#1
Hello! First post to this forum, Im a kid who knows his way around an old car (for the most part :) ), engines as well, so Im not really asking how to build one (although pointers for building a small engine would be helpful, as Ive only built V8s). Anyway I would get a Hemi as they usually flow better (same applies to small engines right?) and its been recomended.

Could one of you share a build sheet or a parts list?
I want decent power (torque, really), enough to throw my 210 pound dad down my street at some velocity, good acceleration would be nice. Im a teenager and money is not something I have all that much of... Im sure my expectations are too high. Please be real with me and tell me if me and my expectations are crazy.

Anyway like I said, Im new to building small engines and any and all tips/advice/ recommendations is greatly appreciated.

Thank you for your time and have a great day,
G
PS Sorry is there are some unclear questions/statements. Im writing this with post with really bad jet lag. Please ask for clarification if there is something you need some specifics on.
 
#2
Do a Google Custom Search at the top of this page. There are LOTS of previous discussion threads on this which you can learn from.
Michael
 
#3
Whats this motor going in? I would start with a stock predator and add a torque converter. This seams to be the best bang for buck and is suppose to be a great reliable and powerful set up on just about anything.
 

CarPlayLB

Well-Known Member
#4
A lot depends on what direction you want to take it. The engines come very lean from the factory, so a header and air filter kit will help you. Once you have better flow in the engine, we need to add more fuel. Typically a .037 or .038 jet will help you.
Throw away the stock spark plug and get one of these
https://www.OldMiniBikes.com/ar3910x-racing-spark-plug.html

advance the timing with one of these. Stock is 24 degrees BTDC, and this will get you to 32 degrees
https://www.OldMiniBikes.com/8-degree-offset-key.html


If you really want to move, you need some billet parts and remove the governor. Billet parts keep you safe and will give a solid foundation to build on.
 
#5
A lot depends on what direction you want to take it. The engines come very lean from the factory, so a header and air filter kit will help you. Once you have better flow in the engine, we need to add more fuel. Typically a .037 or .038 jet will help you.
Throw away the stock spark plug and get one of these
https://www.OldMiniBikes.com/ar3910x-racing-spark-plug.html

advance the timing with one of these. Stock is 24 degrees BTDC, and this will get you to 32 degrees
https://www.OldMiniBikes.com/8-degree-offset-key.html


If you really want to move, you need some billet parts and remove the governor. Billet parts keep you safe and will give a solid foundation to build on.
I second the billet pieces. If you get a billet rod, a good flywheel and some stiffer valve springs the motor pretty bullet proof after that at least with some bolt on's.
 

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