Author Topic: How bad is this!?! **UPDATE**  (Read 5431 times)

Offline chaterlea25

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Re: How bad is this!?! **UPDATE**
« Reply #45 on: 05.09. 2013 21:29 »
Hi  Musky
"Nulon" doesn't seem to exist on this side of the planet ????

John
1961 Super Rocket
1963 RGS (ongoing)

Online bsa-bill

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Re: How bad is this!?! **UPDATE**
« Reply #46 on: 05.09. 2013 21:41 »
Quote
"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
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Online RichardL

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Re: How bad is this!?! **UPDATE**
« Reply #47 on: 05.09. 2013 21:57 »
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.
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020 (if it's not cancelled and we are free to move about by then). Watch website at https://www.gentlemansride.com for details.

Online trevinoz

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Re: How bad is this!?! **UPDATE**
« Reply #48 on: 05.09. 2013 22:06 »
Richard,
                 Measure your pistons and bore. Usually seizing is caused by too little piston to bore clearance.

Trev.

Offline Rocket Racer

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Re: How bad is this!?! **UPDATE**
« Reply #49 on: 05.09. 2013 23:21 »
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
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand