I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the
glaze, so the the new rings will seat properly. Is the same true of
2-cycle engines?

I expect it is, but I just thought I'd check.

TJ

On Sep 9, 8:50*am, TJ wrote:
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the
glaze, so the the new rings will seat properly. Is the same true of
2-cycle engines?

I expect it is, but I just thought I'd check.

TJ

TJ, any shop manual I've seen for any type of 2 cycles used the same
honing procedure as a 4 stroke. So, after checking taper, out of
round, and out of spec bore, I'd use a ball type hone if it were me.

"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the glaze,
so the the new rings will seat properly. Is the same true of 2-cycle
engines?

I expect it is, but I just thought I'd check.

TJ

Majority of the time. There have been a few 2 strokes that used chrome
cylinders. Those can not be bored or honed. It's unlikely that you have
one but pretty obvious when you look at them.

"jamesgangnc" wrote in message
m...
"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the
glaze, so the the new rings will seat properly. Is the same true of
2-cycle engines?

I expect it is, but I just thought I'd check.

TJ

Majority of the time. There have been a few 2 strokes that used chrome
cylinders. Those can not be bored or honed. It's unlikely that you have
one but pretty obvious when you look at them.


I was told that the cylinders become somewhat oblong rather than round in
diameter on engines with a lot of hours and usually require boring first
when rebuilding.

Eisboch

Eisboch wrote:
"jamesgangnc" wrote in message
m...
"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the
glaze, so the the new rings will seat properly. Is the same true of
2-cycle engines?

I expect it is, but I just thought I'd check.

TJ
Majority of the time. There have been a few 2 strokes that used chrome
cylinders. Those can not be bored or honed. It's unlikely that you have
one but pretty obvious when you look at them.


I was told that the cylinders become somewhat oblong rather than round in
diameter on engines with a lot of hours and usually require boring first
when rebuilding.

Eisboch



This was a used block, so I don't know how many hours it had on it
before I got it. However, since I've had it I'd calculate less than 1000
over the course of 20 years. Oh, and maybe five minutes of running
overheated. But considering the way it still starts and runs, I'm gonna
gamble that it's not TOO far out-of-round.

I have a hone I've used on small engines before. It's one of those that
goes in a drill and has three spring-loaded legs with small stones on
them. It should do the job OK. It worked on my garden tractor, and that
has many more hours than the outboard has.

TJ

On Sep 9, 10:03*am, "Eisboch" wrote:
"jamesgangnc" wrote in message

m...

"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the
glaze, so the the new rings will seat properly. Is the same true of
2-cycle engines?

I expect it is, but I just thought I'd check.

TJ

Majority of the time. *There have been a few 2 strokes that used chrome
cylinders. *Those can not be bored or honed. *It's unlikely that you have
one but pretty obvious when you look at them.

I was told that the cylinders become somewhat oblong rather than round in
diameter on engines with a lot of hours and usually require boring first
when rebuilding.

Eisboch

One thing to watch out for, is taper. If the bottom portion of the
cylinder bore is out of spec, you can get piston slap. If the bore
gets too large, it can slap so hard that the piston skirts break.

jamesgangnc wrote:
"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the glaze,
so the the new rings will seat properly. Is the same true of 2-cycle
engines?

I expect it is, but I just thought I'd check.

TJ

Majority of the time. There have been a few 2 strokes that used chrome
cylinders. Those can not be bored or honed. It's unlikely that you have
one but pretty obvious when you look at them.


Yeah, I ran into that once with a chainsaw. Had to replace the whole
block. These days, I probably wouldn't do that again. Chainsaws are
everywhere, and always on sale somewhere. Even good ones, sometimes.

TJ

On Sep 9, 12:26*pm, TJ wrote:
jamesgangnc wrote:
"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the glaze,
so the the new rings will seat properly. Is the same true of 2-cycle
engines?

I expect it is, but I just thought I'd check.

TJ

Majority of the time. *There have been a few 2 strokes that used chrome
cylinders. *Those can not be bored or honed. *It's unlikely that you have
one but pretty obvious when you look at them.

Yeah, I ran into that once with a chainsaw. Had to replace the whole
block. These days, I probably wouldn't do that again. Chainsaws are
everywhere, and always on sale somewhere. Even good ones, sometimes.

TJ- Hide quoted text -

- Show quoted text -

Yeah, I know what you mean! Used to be, I'd rebuild anything, now
days, it's almost cheaper to go buy another chain saw, blower, or weed
whacker!

All depends if it's a steel, chrome, nicksil, or nicom cylinder bore.


"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the glaze,
so the the new rings will seat properly. Is the same true of 2-cycle
engines?

I expect it is, but I just thought I'd check.

TJ

On Tue, 9 Sep 2008 17:33:28 -0400, "Lost In Space/Woodchuck"
wrote:

All depends if it's a steel, chrome, nicksil, or nicom cylinder bore.


"TJ" wrote in message
...
I know that when new rings are installed in 4-cycle engines that it is
generally recommended that the cylinder walls be honed to remove the glaze,
so the the new rings will seat properly. Is the same true of 2-cycle
engines?

I expect it is, but I just thought I'd check.

Most cars are plain cast iron: most outboards are plain aluminum.

Casady