MP Proj. 001 Honda CL360 Part 9: Cylinder Honing

3 stone hone

I was lucky enough to have a friend with a 3 stone cylinder hone tool, offer to lend a hand with the build, and get the cylinders up to snuff.  Unfortunately, I didn’t take any photos of the actual process, but suffice to say, it’s as simple as attaching this thing to a drill, and running it through the cylinder.  Ideally, you would do an equal number of passes in each cylinder, making sure not to overdo it.  You only want to get the glaze out, that has built up over the years, and develop a “cross-hatch” pattern.  This pattern is a very tiny peaks and valley system of grooves, allowing the oil to be trapped in the cylinder wall, in essence, creating a way for the piston to hydroplane on the surface. Read More …

MP Proj. 001 Honda CL360 Part 8: Piston Cleaning

Pistons Before & After

With the appointment to meet my friend, to help me hone the cylinders today, I figured I would take a little time to clean the pistons up. I had made a snap decision, which turned out to be a bad one, purchasing a set of used pistons and rings from eBay.  Everyone then told me that it was definitely better going with a new set of rings, and that the pistons I already have should be fine.  Lesson learned.  I will turn around and try to flip the pistons back on eBay. Read More …

MP Proj. 001 Honda CL360 Part 7: valve leak test

Head: Pre-leak test

Although the last few posts about this build have probably been less than riveting, I have wanted to make sure I document the process as thoroughly as possible.  The mundane is often as important as the big moves that will be made, and this test is no exception.  I knew from the start that I would need new rings, after doing the compression test, and then confirmed it when I took the pistons out, and found that the oil rings were both cracked in half. Read More …

MP Proj. 001 Honda CL 360 Part 6: Rocker Arms & Paranoia

Honda CL 360: To worry, or not to worry, that is the question.

Honda CL 360: To worry, or not to worry, that is the question.

Once you have a motor apart for the first time (this is my first Honda CL 360), there are some things that start to worry you.  The look of something scratched, or a little out of alignment, starts to make you wonder if you chose the wrong donor for a rebuild…  Read More …