Buying first engine

[Big Boy]

Buying my first engine. I'm starting my go kart project now and I've been looking at different ones. During my research, on harbor freight to be exact, I've found that there are the same name engines, but with different specs. For example, here on the top row are 2 sets of engines with the same name. Upon clicking, they have different specs. How do I know which one is better? I also noticed one uses a higher octane gas than my truck.

So what I need help with is figuring out differences between the engines with the same names. Just need to figure out a good engine for my project. Thanks for any help.

 

[Doc Sprocket]

I looked them over briefly. The answer? California. 11hp engine #1 is not CARB certified, and therefore not available in CA. 11hp#2 is. It's an emissions thing. I don't understand why overall dimensions differ. Maybe the muffler? I have a hard time believing that a CARB-choked engine can perform just as well as the same engine unrestricted. There's gotta be a compromise somewhere. If you're ordering online, I'd get the non-CARB. Yeah, environmental rebel!!!

 

[Big Boy]

Thank you. So, which one would you recommend? I'm new to motors as a whole, big or small and am willing to learn.

 

[Doc Sprocket]

I edited my answer. Check it again.

 

[Big Boy]

I edited my answer. Check it again.

Lol. Thanks. I'll be an environmental rebel

 

[r_chez_08]

I would be an environment rebel :L what kinda kart, and what kinda speed/ accelaration are you looking for?

 

[Big Boy]

Not looking for anything special. Just something with enough power to tow light garden things to/from the house/garden. Preferably something with bigger wheels.