Honing

[Nathan S]

I am working on a rebuild of a 200 Johnson. It is about time to re-ring and put it back together. I think I should knock the glaze off the walls before I put the pistions and new rings back in. I dont know much about honing, so if you guys could help it wouls be nice. What I need to know is what size ball hone do I need, what type of fluid do I need, and also any tips you guys might have so I dont mess it up. Thanks in advance for your help.

 

[R.Johnson]

Re: Honing

The proper hone is not a cheap tool. You would be better off to go to a shop that offer's this service. Plus, they can measure the block to see if it is in spec.

 

[mthieme]

Re: Honing

The proper hone is not a cheap tool.

Huh ?
Stone hone or bead hone ~$25. Got several in my toolbox from 1" to 4".

 

[Faztbullet]

Re: Honing

It depends on what you want to do. If your deglazing only, a "ball" hone will be fine. If you need to true or remove light scratches or scuffs, you will need a Sunnen style hone. Also depends on year as the 1987 and back are 3.5" bore and the 1988 and up are 3.7"(rounded up) bore. When you hone use a drill with a min of 400rpm and stroke the brush 55-60 times a minute.Do not stop brush once you start and remove it from cylinder running when you finish. I use PB blaster for honing fluid and wash block with hot soapy water when finished. Take a white towel and wipe cylinder and ports, if you have any grey material on towel rewash untill clean. A pressure washer will not remove all this and must be done by hand. I also use a tapered bottle and regular toliet bowl brush to wash the blocks.

 

[James R]

Re: Honing

Auto Zone carry a Stone Hone you can borrow. As long as the stones are long enough to span the ports it will do the job. Dont do it too much or instead of improving the geometry it will make it worse. The best is to have it professionally done by a reputable shop.