Weed eater engine conversion

[Mark Wo]

Originally Posted by GOOSE316

This was a monster scooter engine... i posted a few threads back on the issues with them.

The fuel tank CAP leaks when the cap is under the motor, the cap sticks out to the side and spits fuel when engine running...so i mounted it straight up on the handle so it wouldn't spit or leak... will also allow for a little more fuel to get sucked out... and should be easier to fill.

Also i am running 89 octane in this, it reduces smoke... 89 octane, and stihl oil..at about a 50:1 or 55:1 mix..

Ever consider a new, bigger o-ring inside the cap? I had a similar issue and just bought a different o-ring and problem solved.

Don't you love the quality of the chinese scooter motors?

Mark

[GOOSE316]

Yea i woudln't recommend a monster engine to anyone..

[Bob Eames]

I have a friend of mine that runs a 31CC Ryobi in his RC plane, and he was talking about switching to white gas. According to him, there's no alchohol in it, and it starts and runs better, with alot less fouling on the plug. I tried it in my weed wacker at home, and there is a difference, it definitely runs better.

Just thought it might help some of you!

Bob

[GOOSE316]

i'm from kansas...

[Bob E]

White gas is pure gasoline with no additions. You are from Kansas, home of Coleman. White gas is what Coleman fuel is.

Bob

[GOOSE316]

Yep, never heard of it put that way.

So your saying just white gas, and no oil? Or use white gas and mix with oil, to get the mixture? Wouldn't the lack of oil cause the motor to burn up? Or am I missing something?
Thanks for the info

[Bob E]

I'm sure that they mean white gas with the normal oil mix.