Re-honing cylinder walls

J

JHFORD51

Senior Member
I'm putting an 8BA back into service that has been sitting for probably 15 years. Pulled the heads and found just a slight amount of oxidation where a couple valves were open. So I'm going to re-ring it with new iron rings.

Qustion: this is a real low mile engine and I can see the cross hatch from the rebuild. I'd like to gently run a brush type hone over the cylinder walls before putting it back together to avoid it smoking and get the new rings to seat quickly. Would 240 or 320 grit be better for the iron rings?

Thanks
 
Hastings says 220-280 grit.
Plain cast iron is really forgiving...get the crosspattern as close to 45 degrees you can...and most important for a good job get it cleaned after you are done.
 
If you go down that road make sure the after cleaning of cyl wall is done correctly no gas diesel or solvent just hot water and tide detergent.


R
 
Ronnie said:
If you go down that road make sure the after cleaning of cyl wall is done correctly no gas diesel or solvent just hot water and tide detergent.


R
Click to expand...

Yes - I usually run a hose from a hot-water heater . . . get the block hot, soap scrub the Hell out of it, rinse with hot water, use an air-gun to blow the water off and let the hot metal dry everything.

If it was mine, I'd run a rifle brush through the main oil galley tube (have to pull the plugs out) - as well as some brushes through the main galleys. You can't get enough of the dirt/crap out of it . . . only takes one piece of junk to score the bearings.
 
Spray the cyl walls with wd40 rite after the wash. Test is a wipe with a clean white rag if there are any smudges you need to wash more.



R
 
Thanks for the replies. After deep cleaning I have always used shop rags dampened with ATF to see what, if anything, remains. Was planning to use go-jo as the home lubricant. Ties in great with a hot water rinse...
 
JHFORD51 said:
Thanks for the replies. After deep cleaning I have always used shop rags dampened with ATF to see what, if anything, remains. Was planning to use go-jo as the home lubricant. Ties in great with a hot water rinse...
Click to expand...




Go Jo with no pumice and a flex hone makes for a easy cleanup with hot water.


R
 
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