212 vs 301 vs 420?

[Cartinfun]

I have a yerf dog 3202 that needs some work including a new engine and torque converter. This one is gonna be mainly for me and or my wife to drive, kids wont be driving it. What are the possibilities and draw backs with putting a bigger engine in it? 212 vs 301 vs 420?

I know the 301 and more so the 420 are gonna be bigger and heavier. Is the trade off of weight/size worth it? Is it possible without drastic modifications to even put the 420 in the Yerf Dog 3202? The series 40 torque converter would be needed for the 301, what about the 420?

 

[redflash]

I see it as a dollars and cents trade off. The 420 comes with 13 horsepower, and for $100-150 you can kick it up to 15+ horsepower.
The 212 comes with 6 1/2 horsepower.......to achieve 15 horsepower ( if you at all can ) you'll need to invest an additional $400-500 dollars, and the engine will be screaming for help at hi rpms. And the 420 will be loping along at a comfortable rpm.
the 212 with motor and upgrades will top out at about $650.00.........The 420 with motor and upgrades will cost you about $550.00 and require a lot less work........there Ya go ! If your rider weighs upward of 200 pounds then the 420 will last longer.

Da redflash

 

[Cartinfun]

I see it as a dollars and cents trade off. The 420 comes with 13 horsepower, and for $100-150 you can kick it up to 15+ horsepower.
The 212 comes with 6 1/2 horsepower.......to achieve 15 horsepower ( if you at all can ) you'll need to invest an additional $400-500 dollars, and the engine will be screaming for help at hi rpms. And the 420 will be loping along at a comfortable rpm.
the 212 with motor and upgrades will top out at about $650.00.........The 420 with motor and upgrades will cost you about $550.00 and require a lot less work........there Ya go ! If your rider weighs upward of 200 pounds then the 420 will last longer.

Da redflash

That's kinda what I was thinking. So does it take a lot more to get the 420 in there? What about the 301? 301 kinda in between the 212 and 420.... I was already thinking about getting the 301, should I just go up to the 420? I'm around 215lbs and 6ft. Don't know if the wife would ride with me, she's about 110lbs. The kids are all smaller.

 

[redflash]

it's a bit larger, different bolt pattern...why waste time on the 301......you're just halfway there. Someday your wife will be 200 lbs., so why not now?

Just kiddin
Da redflash
just my 2 cents

PS. to add the 420 you would have to weld on a new mounting plate with 420 dimension mounting holes. or just get a 3/16-1/4 plate of steel, drill your own mounting holes, and weld it in perfect position to line up with sprockets, etc. a little trouble, but I think worth it in the long run. The 420 will also increase the resell of your Kart. ( that's what I tell the little woman !)

 

[ezcome-ezgo]

Someday your wife will be 200 lbs

Dang. Just....dang.

 

[MTScott]

If you go 301, go 420. Waste not to.

If you go 212, well you can stick to a series 30 torque converter, for which there are many simple cheap effective plate kits for the driven pulley. Finding the right 40 series plate kit can get tricky, and expensive, and may not work well anyway. Many do run them, and just end up reversing the driver. I ended up building a jackshaft on to the cart to run the driver/driven the way it was intended.

On a yerf dog, I'd strongly consider the 420. Anything more than a single seat kids cart I'd go 420. If it'll haul up to two adults, I think you'll find the 212 runs out of guts.

 

[MTScott]

P.S. My wife is still 120 lbs, and I still went for the 420. I made up for it at 260 lbs.

 

[panchothedog]

The 301 needs different engine plate as well. The plate available has holes for both the 301 and the 420. It is VERY thick and robust, but the best part as compared to making your own is it is slotted to allow movement for and aft. A pain for sure on metal that thick. I bought a very rough Manco Intruder kart that came with a brand new 301. If I didn't already own one then the 420 makes a lot more sense. Only about $130 more to buy and if you want to hop it up
( as I did mine ) the price of parts is almost identical between the two. I run a
40 series torque converter ( plate system ) that I bought from OMB Warehouse.
usually $219, but they put it on sale quite often. It was $197, and includes the reverse wound spring. So no building a separate jack shaft or 2nd chain. It is litterly bolt on, line up the axle sprocket and go. After adding the heavier springs and lighter weights with my current engine mods the kart feels as fast as many cars from 0 to 40. Absolutely blew me away after the clutch mods.
Not to mention put a BIG sh#t eaten grin on this old geezers face. I VERY confidently recommend the 40 series system that they sell.

 

[Denny]

Just upgrade to a Genuine Comet belt!