Random 2 stroke porting pics.

[oscaryu1]

 

[Kenny_McCormic]

Hows it run?

 

[sideways]

Very nice! What engine is that? I bet she'l rev now!

Hayden

 

[oscaryu1]

I only have one wish: That the cylinders I have weren't crappily prepped and coated with industrial chrome plating, but instead NiKaSil or similar. Even DECENT but thick[er] chrome would be godly. I go through cylinders almost monthly ($100/per)

Take in mind THIS scooter in particular is SPINDLE driven. I was giving it gas slowly as hell to prevent slipping (there was close to none when revving slowly, but if I floor it, I'd just either 1) wheelie, or 2) eat away the tire in seconds).

http://www.youtube.com/watch?v=lOVgNBW5OAY

 

[sideways]

I only have one wish: That the cylinders I have weren't crappily prepped and coated with industrial chrome plating, but instead NiKaSil or similar. Even DECENT but thick[er] chrome would be godly. I go through cylinders almost monthly ($100/per)

Take in mind THIS scooter in particular is SPINDLE driven. I was giving it gas slowly as hell to prevent slipping (there was close to none when revving slowly, but if I floor it, I'd just either 1) wheelie, or 2) eat away the tire in seconds).

http://www.youtube.com/watch?v=lOVgNBW5OAY

Perhaps you should get an old cylinder bored and sleeved? That'd be errr fun on a 2 stroke but anyways..

Hayden

 

[Kenny_McCormic]

What kind of oil mix are you running? What's your CHT? I don't believe you are dong everything right and eating a motor once a month.

 

[oscaryu1]

25:1, full synthetic... uh... Maxima K2.

The plating just sucks, the GP290 is a Taiwanese clone of the... well... Chung Yang (the ****ty company) tried to beast out Zenoah (Japanese company, first came out with these RC/industrial motors), and overall, CY plating sucks.

To the point people have had brand new cylinders SEIZE when first starting them, LMAO. Yes, they suck that badly.

 

[freakboy]

why run one if they seize? or why run one that blows after a month of use for 100 bucks? why not go get a different engine.....

 

[oscaryu1]

The potential and power of 46cc will amaze thee.

Just a bad prep of the cylinder I assume, didn't clean all the aluminum oxide formation off before zincating it... maybe only single zincation? Bad chromic acid formulation?

 

[Kaptain Krunch]

If a 46cc amazes you, you should look into a 80cc moto-x engine. L/C cr/rm/kx/yz 80 motor would be insaine on a scooter, andreally sketchy

 

[Kenny_McCormic]

Try going to 16:1, if you look at motors that really scream in racing, they usually run heavier than that. Some KT-100 guys that turn 15-16K in bursts run 12:1.

 

[oscaryu1]

****, seriously? These ****ty motors come outta the box with a "40:1" label. Yes, the ones who have peeling plating

 

[oscaryu1]

If a 46cc amazes you, you should look into a 80cc moto-x engine. L/C cr/rm/kx/yz 80 motor would be insaine on a scooter, andreally sketchy

You should look into Polini motors. 39.8cc, 14-17HP. No joke.

 

[juniordragsterkenny]

actually, a cast iron/steel sleeve would do good in one of these

 

[crazycart]

You should look into Polini motors. 39.8cc, 14-17HP. No joke.

Most newer 80's make 25-30 hp.....

 

[oscaryu1]

It's still <40cc's -.-

Anyone know where I can find a 36mm ID sleeve? l0l.

I wouldn't mind try it... I DO have machine shop access next year o.o

 

[oscaryu1]

nue

I'll look into it o.o

 

[oscaryu1]

Try going to 16:1, if you look at motors that really scream in racing, they usually run heavier than that. Some KT-100 guys that turn 15-16K in bursts run 12:1.

Would 15:1 actually hinder performance from... say 32:1?

In THEORY, I'd actually be running it lean. Less fuel, more oil.