Ported ms660 professionally built entirely from new aftermarket and new OEM parts. Full ported cylinders and pistons. Makes for a really fast revving 660 that keeps its torque. Will easily outperform an OEM stock saw. Test ran and tachometer tuned a little rich at 14,000 rpm. I have several professionals running these with great feedback from them. I also build 440’s, 460’s and a neat big bore 361. Features are listed below:
- Fully ported cylinder and piston
- Muffler gasket matched and ported
- Lightweight tapered piston wrist pins
- NGK spark plug
- Piston ridges removed and lightened
- Cylinder base planed
- Squish set between .021”-.022”
- Increased compression
Here is what a professional who recently purchased a ported ms660 had to say:
Ran the saw at work today and I'm very impressed with it! Put on a 36 inch bar and full skip chain and It fits the power perfectly. Very fast trigger response and great low end power. I made a couple cuts on a large spruce trunk and then let it idle to give it a nice heat soak then let it cool and finished the rest of the bucking. Fires on the first pull and revs high! I adjusted the idle up just a bit and it hums. I have 7 spruce trees to do tomorrow and cant wait to use the saw some more. Great job Sir! He later messaged me that the saw really came alive in the middle of a cut and must have needed a couple tanks to break in and it was super impressive.
$900 plus shipping
- Fully ported cylinder and piston
- Muffler gasket matched and ported
- Lightweight tapered piston wrist pins
- NGK spark plug
- Piston ridges removed and lightened
- Cylinder base planed
- Squish set between .021”-.022”
- Increased compression
Here is what a professional who recently purchased a ported ms660 had to say:
Ran the saw at work today and I'm very impressed with it! Put on a 36 inch bar and full skip chain and It fits the power perfectly. Very fast trigger response and great low end power. I made a couple cuts on a large spruce trunk and then let it idle to give it a nice heat soak then let it cool and finished the rest of the bucking. Fires on the first pull and revs high! I adjusted the idle up just a bit and it hums. I have 7 spruce trees to do tomorrow and cant wait to use the saw some more. Great job Sir! He later messaged me that the saw really came alive in the middle of a cut and must have needed a couple tanks to break in and it was super impressive.
$900 plus shipping