Jetting, and a Question about new cylinder

[Mr. Herron]

Is that a big crack I see inside the cylinder on the right???

View attachment 217533

It's a line that he drawed

 

[Mr. Herron]

Here is some better pics

 

[Mr. Herron]

Well I installed the cylinder, after I sanded down the cylinder for a better squish gap. Had a hard time running the new pwk21 carb but finally almost have it dialed in. I got rid of the air filter that came with it and put a velocity stack style one and runs a lot better. Went thru so many different jets before finally finding the correct ones. I'm about to take it for a good 10 mile trip and see how it does. Definitely noticable power increase from the ported cylinder and carb. At first a closed off the power jet but then tried it out and for sure can tell a difference at top speed..

 

[Mr. Herron]

Here is some pics

 

[Mr. Herron]

Does this plug look ok?

 

[DAMIEN1307]

Does this plug look ok?

You have hardly run it long enough to find out how your plug is burning yet.

 

[DAMIEN1307]

Ideally, you will want it to look more like this one of mine.

 

[Mr. Herron]

Quick question, if I running to lean does that mean I need to go from a 100 main jet to a 102?

I'm running a 100 main, 38 pilot and needle is on 2nd slot from the top. But my plug looks a little greyish and seems like it's running a tad bit too lean

Oh and 32ounce to 1 gallon 93 gas

Also what does this mean? Took the air filter off and put a velocity stack on and it ran so much better?

 

[SanTanfan]

Looks like u were sold a used cylinder that someone tried to clean up like new... Get a refund not worth blowing up your piston too

 

[SanTanfan]

Quick question, if I running to lean does that mean I need to go from a 100 main jet to a 102?

I'm running a 100 main, 38 pilot and needle is on 2nd slot from the top. But my plug looks a little greyish and seems like it's running a tad bit too lean

Oh and 32ounce to 1 gallon 93 gas

Also what does this mean? Took the air filter off and put a velocity stack on and it ran so much better?

32 oz ??