Cylinder bore honing

[shyster]

Hi, I am replacing my piston rings and wanted to 'bust the glaze', hone my cylinder walls before I refit the pistons. Any advice anyone? I've borrowed a honing tool that attaches to a drill, it's got 3 stones on it, not sure what grit they are. How fast should i run the drill and for how long?
The bores don't look glazed, just look polished, is this what I should be aiming to get rid of?
Cheers

[european voyager]

use oil with it down the bore , you want to to the sheen off the bores , dont use the tool dry

[stagmuffin]

you need to break the hardened glaze on the bore with a gentle haning action with the tool revolving about 350/500 rpm using oil to reduce the friction and aid the stone move the tool up and down the full length of the bore until you achieve cross hatching ,a nice pattern created by the tool which extends verticaly up and down the bore with an even pattern until the shiny surface has been removed.you will need to clean /wash the block thoroughly afterwards because the residue will eat your engine if not removed.im sure others will give you further advice.
steve.........

[milothedog]

Hi, I am replacing my piston rings and wanted to 'bust the glaze', hone my cylinder walls before I refit the pistons. Any advice anyone? I've borrowed a honing tool that attaches to a drill, it's got 3 stones on it, not sure what grit they are. How fast should i run the drill and for how long?
The bores don't look glazed, just look polished, is this what I should be aiming to get rid of?
Cheers

You need too get a crossed hatched pattern "90 degrees", lubricate it with a mixture or parrafin and engine oil when doing it. what you need to achieve is a surface that will retain the slightest amount of oil in the honing marks as the piston travels down and back up the bore. a decent cordless drill should be OK.

Ian.

as Steve as already said !

[martin]

Just a thought, but if the bores are good, and there's any trace of the original cross hatching left, I would leave well enough alone. I came on this phenomenon on a P6 RV8 with 98.000 miles on it, so it does happen. Martin.

[elvimto]

Your cross hatch should be 45 degrees thats 22 1/2 from verticle in relation to the cylinder make very sure the stones are clean and see if you can check the grit it sounds like in your case the bores are in good shape watch out for the stones becoming loaded they will not cut and give you a lot of extra work. If you are going this far I would buy a new set of stones or use the bottle brush type hone which is more of a clean up type than the other. Google cylinder honing you will get the idea.

Stuart