Clyinder bore check out

[Rickrod3]

Hi All:

I have sucessfully unstuck my motor, have pulled the head and have the cylinder almost totally off. For some reason I think it is binding on the 2 front bolts.

can some on tell me how someone goes about measuring the bores and checking the cylinder.
Also could you recomend tools designed for the do it your selfer.$$$.

I have seached but could only find the dimensions that they should be.
Thanks in advance and apologize if it is something I should have been able to find.

Rick

[dbeardslee]

can some on tell me how someone goes about measuring the bores

With something like this.

[trbig]

OR.....


Something like this..


http://www.harborfreight.com/cpi/cta...temnumber=5649

You set it in the cylinder and turn the knob at the base of the handle. The arms spring out against the sides of the cylinder. Turn the knob back to lock the arms where they are, lay the tool over at an angle to disengage contact with the sides of the cylinders and pull it out. Carefully measure it with one of these..


http://www.harborfreight.com/cpi/cta...emnumber=47257.


You need to take several measurements at the top, middle and bottom of the piston stroke area. What happens when the motors wear, is it gets egg shaped and longer from front to back than it does the sides.

Tod

[Rickrod3]

Thanks Dbeardslee A Trbig.

[Rickrod3]

called the local Harbor freight they have it in stock I'll pick them up tomorrow.

Thanks Again

[TADracer]

While you are there....

You also need to measure your pistons to get what your piston/cylinder clearance is. Measure the piston with a micrometer or caliper 90 degrees from the pin bore and about 1/2" down from there. Thats the part of the skirt where the most wear will be.

The telescoping gauge set from Harbor Freight works but is not as accurate as an inside micrometer. But if you do not do this all day long it is a great inexpensive tool to use but it is not the most accurate thing in the world. So you might want to take all your cylinder measurements a couple of times to make sure you are getting correct readings.

Also, while you are down this far measure your ring gaps. Insert the rings one at a time into the bore from the bottom and using a piston to make them square to the cyl. wall, push them in about an inch. Measure the gap with feeler gauges.