Oily Spark Plug

[Scrubcadet10]

I will get a hone like this and not the spring type.

That hone is worth more than that engine.
This will do ya, http://www.brushresearch.com/

 

[Shorter Grass]

That hone is worth more than that engine.
This will do ya, http://www.brushresearch.com/

Other hone was too expensive for the application

 

[Hammermechanicman]

The 2 hones are for very different uses. The ball hone is for what is called "glaze breaking" which just reconditions a smooth bore to prepare for new rings. It won't correct a tapered bore. The Lisle rigid hone is for honing a cylinder for an oversize piston. It will correct a tapered bore. What hone is used is dependent on whether just reconditioning the bore for new rings or fitting an oversize piston.

 

[Shorter Grass]

The 2 hones are for very different uses. The ball hone is for what is called "glaze breaking" which just reconditions a smooth bore to prepare for new rings. It won't correct a tapered bore. The Lisle rigid hone is for honing a cylinder for an oversize piston. It will correct a tapered bore. What hone is used is dependent on whether just reconditioning the bore for new rings or fitting an oversize piston.

Deglaze and standard rings being fitted

 

[Hammermechanicman]

Deglaze and standard rings being fitted

You will want an aluminum oxide 320 or 400 grit hone for your size cylinder

 

[Shorter Grass]

You will want an aluminum oxide 320 or 400 grit hone for your size cylinder

I am surprised as the grit is coarser than I would have imagined?

 

[Hammermechanicman]

If it was an sleeved cylinder it would use silicon caebide at 600 grit. Thoae numbers are from the Brush Research catalog

 

[bertsmobile1]

Unless you are using teflon coated or chrome plated rings the bore has to be ROUGH
The action of the rings running over the peaks weas the tops off but leaves to rootsThe roots hold the oil that actually makes the seal between the rings & the bore

 

[Shorter Grass]

Unless you are using teflon coated or chrome plated rings the bore has to be ROUGH
The action of the rings running over the peaks weas the tops off but leaves to rootsThe roots hold the oil that actually makes the seal between the rings & the bore

The cylinder looks remarkably smooth to the eye and touch but I will remove the piston later and inspect the cylinder and piston rings then

 

[Hammermechanicman]

The cylinder looks remarkably smooth to the eye and touch but I will remove the piston later and inspect the cylinder and piston rings then

Bert is correct. New rings put into a smooth cylinder will never seat in properly and will usually be an oil burner. The use or a hone to "break the glaze" or condition the cylinder for new rings is needed when you install new rings. Very important on aluminum bore engines is to change oil after a couple hours of break in running. Aluminum bores cast off more metal seating rings than an iron bore does.