How bad is this!?! **UPDATE**

[chaterlea25]

Hi  Musky
"Nulon" doesn't seem to exist on this side of the planet ????

John

[bsa-bill]

"Nulon" doesn't seem to exist on this side of the planet ????

Think it might exist or similar exists as ZX1
I've used it in a rebuilt engine to cure a sticking valve, it worked fine, did a couple of hundred miles then drained the oil (keep it in a tin for future use)
it's not thick or sticky

[RichardL]

To stay out of trouble with the moderator, I'm trying to stay away from the oil issue here. I am on rebuild and repair topics so I was glad to see, so far, nothing that appears to be damage induced by the wrong oil.

John, I'd never heard the term "swiss file" before, but the term seems to be in common use and, strangely, I own some (swiss files, not terms). Also strangely, I found this posted about using swiss files to work down piston high spots. It's three paragraphs from the end.

http://groups.yahoo.com/neo/groups/The_Sunbeam_Motorcycle/conversations/topics/97

Anyway, I'm going to see what buffing does first.

Musky,

Really, replace the rings? On first (not maginified) exam, they don't appear to have any damage. I hate to do it because they are original Hepolite, now 3700 miles old. I will look with strong magnification to see if there is an issue. I'll, no doubt, be back to discuss it.

Richard L.

[trevinoz]

Richard,
                 Measure your pistons and bore. Usually seizing is caused by too little piston to bore clearance.

Trev.

[Rocket Racer]

if the rings have marked from the seize, bin them.
I would do a light hone just to ensure the bore is cleaned up irrespective of clearances (which should also be checked)
in my opinion a failure has occurred, it wont just go away. some remedial action is required to prevent recurrence.
just my 10 cents worth