Miller VS coolhead

[James-26]

I was going to buy a coolhead for my banshee with 20 or 21cc domes but was told a milled head is just as good at half the price of a coolhead. IMy elevation is around 890 feet. My banshee has a stock head now with 66.5 wiseco pistons. I checked my compression and I'm right at 100 psi on each cylinder. From what I read that is normal compression for my elevation and stock head. I'd like to see 115 to 125 psi on each cylinder as I feel that will give me a nice increase down low. Will a milled head be able to put out the numbers I'm looking for or will I need to go with a coolhead? Again I'm new to 2strokes and really have no idea what I'm talking about.

[J-Madd]

I was going to buy a coolhead for my banshee with 20 or 21cc domes but was told a milled head is just as good at half the price of a coolhead. IMy elevation is around 890 feet. My banshee has a stock head now with 66.5 wiseco pistons. I checked my compression and I'm right at 100 psi on each cylinder. From what I read that is normal compression for my elevation and stock head. I'd like to see 115 to 125 psi on each cylinder as I feel that will give me a nice increase down low. Will a milled head be able to put out the numbers I'm looking for or will I need to go with a coolhead? Again I'm new to 2strokes and really have no idea what I'm talking about.

 

 

I would think that compression is low. 890 ft elevation is not enough to loose 20 psi over sea level. Imo, a milled head is just as good as a cool head for a stock cylinder, stock stroke motor. I have mine milled 0.020". Put the compression at about 150 psi at 300 ft elevation. Are you holding the throttle wide open and kicking until the gauge stops moving?