1987 Force 125 Outboard - Honing the Cylinders

The process of honing cylinders is important because it removes the glaze that accumulates from running the motor. When the glaze is formed it reduces the amount of oil that sticks to the walls of the cylinder and causes extra friction and wear. It also reduces compression and reduces the power the motor produces.
There are several import things to note about honing.
There are 2 different types of hones. One that has flat stones ...continued at http://www.reinsmith.net

Category:

Autos & Vehicles

Tags:

• cylinder
• honing
• force
• 125
• outboard

[gradxg]

i thought u move the dril fast up and down an let it turn slowly when honing?

[mreinsmith]

I imagine that would work as well, and we are using the flat stones instead of the "Christmas tree" type hone. In either case, the aim is to break the glaze, get the cross hatch pattern so that the oil is retained in the cylider while removing as little of the actual steel of the cylinder. So I would say either method would do that using a flat stone hone.

[invisiballer3]

what kind of lube are you using for the hone job?? nice work by the way..

[mreinsmith]

That's funny, I had to actually watch it again to remember. At first I thought it was engine oil. But then I remembered it's simply 3 in 1 oil. I forget right this second where I read that, but the reason is that it is slightly lighter than engine oil and makes for a better grind. Hope that helps.

[LoveMySRT]

@ryanorr15 of course that is on a force. not sure what type of engine your working on but this applies to any chrysler, us marine force up to when they became mercury force not sure what they are like.

[LoveMySRT]

@ryanorr15 the studs come out. you can replace them. there pretty good steel could clean them up and reuse them i would imagine. ive had my motor off and on a couple times.

[ryanorr15]

When you took the engine off from the lower unit were the studs at the bottom of the block rusted? I am asking this because mine are and I was wondering if they are replaceable or not?

[grl8862]

Great video. Thanks for posting. I'm getting my 75 Mariner honed as we speak. New water pump. Not a cheap job when someone else does it. He's found pitting on the crank shaft as well, $450 for a reconditioned replacement. So the bill keeps rising. I figure the whole job will end up around $2300.

Should I dare say, they have "HONED" in on my wallet?....

[lumpy3553]

You cant use a " christmas tree " type hone on a 2 stroke engine . The " balls " get caught in the ports and either damage the port or get ripped off the hone .