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Buell Motorcycle Forum » XBoard » Archive through August 25, 2009 » Honing a Cylinder, reliable? « Previous Next »

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Jraice
Posted on Friday, August 21, 2009 - 02:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

As seen in my "Heart Surgery" thread, my bike had some problems with the intake valve seals and excessive ring wear. The rings were replaced (as well as the seals) and the cylinders honed. A member on a different forum feels I should go in there and demand a new engine or at the least new heads/rings/cylinders.

He says honing an engine is what you do when your selling a bike not fixing a brand new one.

What are your guy's thoughts?
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Fullcircle
Posted on Friday, August 21, 2009 - 08:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Honing is no problem, fully acceptable for field service when wear is not evident but rings are being replaced.
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Pogue_mahone
Posted on Friday, August 21, 2009 - 08:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

well yeah honing is what you do to any engine for new rings.
a new engine would be honed so it can get its rings seated and sealing correctly.
your situ is few steps up from minor engine repairs,but certainly doesnt warrant a new engine.there is nothing wrong with the bottom end,so fix the problem and move forward.
your friend is wrong
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Deadduck
Posted on Friday, August 21, 2009 - 08:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

What happens when you are trying to "unload" the problem on someone else is a quart of oil treatment that fills in gaps between the rings is added to hide the problem.
Its common practice, at least for me, if I take the trouble to dismantle the engine and replace rings, honing is simply part of the process to do things right. Honing ensures scratches are removed, and roundness is obtained so that the new rings have a good surface to seat to. If the honing process hadn't been done, I would have had an issue with that, and it would have raised serious questions about the ability of the shop.
You're in good shape, and hopefully on the way to many trouble free sMiles.
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Fast1075
Posted on Friday, August 21, 2009 - 10:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Cylinder honing is a finishing process to insure the rings will break in. It is used as cylinder refinish IF the cylinders are within acceptable tolerances for wear.

There would be a problem if the cylinders were NOT honed...

On the ring wear issue...make sure you run an air filter if for some reason you haven't been...if you are running a wetted gause "air filter"....go back to a pleated paper filter.
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Sifo
Posted on Friday, August 21, 2009 - 10:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It is used as cylinder refinish IF the cylinders are within acceptable tolerances for wear.

Fast1075 hit it on the head. On such a new engine I can't imagine the cylinders being worn out of tolerance. As long as there are no scratches from broken rings, debris, etc. it should be fine. Honing is required for seating the new rings.
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Jaimec
Posted on Friday, August 21, 2009 - 11:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

What are the cylinders lined with? From what I recall, the nicksil (sp?) liners used in a lot of modern engines CAN'T be honed or bored, but they don't scratch either...
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Fast1075
Posted on Friday, August 21, 2009 - 11:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The 1125 has nikasil or equivalent cylinders...the XB's have ductile iron sleeves.

The nikasil can be refinished, but he process is completely different than boring and honing.

(Message edited by fast1075 on August 21, 2009)
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Jraice
Posted on Friday, August 21, 2009 - 11:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks guys...

When I go in Ill confirm that the cylinder damage was minimal.

And I am running an OEM air filter, but how could that cause problems with rings???
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Teeps
Posted on Friday, August 21, 2009 - 11:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It shouldn't unless there was a leak.
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Jraice
Posted on Friday, August 21, 2009 - 11:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

How might one check to see if there was a leak?
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Teeps
Posted on Friday, August 21, 2009 - 12:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Look for a hole in the filtering media or a dirt trace on the sealing surfaces.
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Marshj
Posted on Saturday, August 22, 2009 - 11:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Honing also creates ridges and groves for oil to hold in on the cylinder walls. allowing for increased lubrication= less wear
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