Inexpensive Power Mod

[boneswood]

2 3/16'' of pipe was added from a shower head plumbing tube. Just sand the threads off of the straight end and it fits in your stock carb. Add to a cheap offset intake and you have 7.5'' from the piston to the carb, which helps these engine run efficiently and negates the need for a bottle booster.

 

[springfieldscooter]

glad you like it!
Ive found that the shorter the intake, the better.

 

[springfieldscooter]

Especially with a performance exhaust.

 

[springfieldscooter]

Interesting chain adjuster! Tell us more!

 

[butre]

the further out you stick the weight of the carb the more force it puts on the joints. it acts like a lever. it's best to mechanically isolate the carb from the engine using rubber hose

 

[butterbean]

the further out you stick the weight of the carb the more force it puts on the joints. it acts like a lever. it's best to mechanically isolate the carb from the engine using rubber hose

This actually gave me an idea for my carb. I'm working on a predator build with an aftermarket carb, and the angle of my intake manifold makes the carb stick out to where my legs will hit when I pedal. I was going to try cutting the manifold and sticking some pipe over or in it. But I like the hose idea better. Any particular type of hose I should look for (temperature resistant?) The manifold is separated from the engine already by a thermal baffle, if that makes any difference.

 

[butre]

intakes stay relatively cold, the only requirement is that it has to be fuel resistant.

 

[butterbean]

Cool, thanks.

 

[Deleted member 12676]

longer intake tracts benefit low rpm power more. a small engine needs all the help it can get with low rpm power. rubber hose is best. any hose will do. I used hose that wasn't gasoline resistant and it held up just fine.
also add in 6" of pipe in the header before the muffler. that also helps.

 

[butre]

I've used rubber hose that wasn't gasoline resistant and ended up with a squishy gross mess