Cascade Crew

kurfbird · Posted: Wed Aug 22, 2007 9:27 am Post subject: Honing cylinder

I have a few questions

Okay #1 cylnder had low compression 75 PSI. I checked the valves and they look good when I removed the head. Dont seem to be burnt nothing missing.

I purchased a set of stock rings. From reading Looks like a ball hone would be the best to hone the cylinder and then installed the new rings.

I have never hones a cylinder before. Can you take me through the steps.

How do you measure the ring gap on the cylinder.

Is there anything else I need to do on this evelution.

alloy · Posted: Wed Aug 22, 2007 11:24 am Post subject:

A ball hone is really best for a used cylinder. The ball type hone conforms to the cylinder taper, and a hone with stones on it doesn't really work as well on a used (worn) cylinder. But on a fresh bore I'd only used a stone type hone, and I'd only let a professional do this with a Sunnen machine.

To measure rig gaps, push the ring into the cylinder past the top 1/2" or so, make sure it's square on the bore (a piston to push it down works great) and use feeler gages to measure the end gap.

kurfbird · Posted: Wed Aug 22, 2007 7:41 pm Post subject: Made some decisions

Pulling the motor out of the car.

Going back to my orginal motor

Taking low compresson head to the machine shop and have them do a valve job and see if the valves were my problem.

If its the valve were the problem I wont hone.

A few people on TGO dought that the compresson would drop to 75 psi and all the rest were good between 135-150 PSI