1300 pound go kart? How fast will it go?

bob58o

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I'm really liking that exhaust.
You should show up to the Detroit minibike races with that. LoL, It would be a hit.

Can't wait to see what cam you teased us with.
Waiting for episode 5.
 
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chimmike

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I love the fabricated header to use the slip-on motorcycle muffler. Where did you find the flare part to fab that, or did you make it?
 

Jimbo67

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The exhaust system was one of the hardest sub systems to put together. The primary concern was not to lose any power while trying to quench the bark of the 212 cc engine.

The cylinder head flange was purchased on ebay for $8.00 The Sport bike muffler came with the adapter flare and that was also purchased on ebay for something like $60.00

The one inch in diameter exhaust pipe is somewhat controversial .... its electrical conduit. Before welding the conduit, the ends were dipped in muriatic acid to remove the galvanized coating. It takes about 10-15 min in the acid bath to fully remove the poisonous galvanized coating... never weld galvanized metal.

Anyway, the exhaust has a nice tone and after it was fitted the engine was running a little bit on the lean side... which is sort of good, because that allowed me to change the carb jet for more fuel.
 

Jimbo67

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I'm really liking that exhaust.
You should show up to the Detroit minibike races with that. LoL, It would be a hit.

Can't wait to see what cam you teased us with.
Waiting for episode 5.

LOL, it might take me a couple of days to drive the 60 miles to Detroit...

Episode 5. has been released a few min ago. More on the way!

 
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chimmike

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The exhaust system was one of the hardest sub systems to put together. The primary concern was not to lose any power while trying to quench the bark of the 212 cc engine.

The cylinder head flange was purchased on ebay for $8.00 The Sport bike muffler came with the adapter flare and that was also purchased on ebay for something like $60.00

The one inch in diameter exhaust pipe is somewhat controversial .... its electrical conduit. Before welding the conduit, the ends were dipped in muriatic acid to remove the galvanized coating. It takes about 10-15 min in the acid bath to fully remove the poisonous galvanized coating... never weld galvanized metal.

Anyway, the exhaust has a nice tone and after it was fitted the engine was running a little bit on the lean side... which is sort of good, because that allowed me to change the carb jet for more fuel.

yeah I am never, ever keen on messin with anything galvanized via welding process. Wondering if it can be adapted onto the header that comes with stage 1 kits or something.
 

bob58o

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That is decent gas mileage. Now you just need a bigger tank. Maybe with an electric pump and put in the trunk. I'm not sure if you still have a 12V battery in the car. I found a 12V 1 amp pump (1-2psi IIRC) that should work with a stock carb.
 

Jimbo67

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Hi Bob58o,

Thanks for posting the link to episode 6 !

I was very surprised at the gas mileage as well. Prior to the test I thought the car was getting less than 30MPG.

Another 212 cc non-hemi engine is currently being built with all the performance mods shown in the last video. The new engine will also be getting a Mikuni fuel pump. All the engine mods will be documented in the next video...
 
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