Author Topic: A small rattle in the engine department....  (Read 2142 times)

Online bsa-bill

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Re: A small rattle in the engine department....
« Reply #15 on: 15.09. 2015 09:48 »
Quote
let me pull the barrels off and maybe all will be revealed

What!! and stop some of us making fools of ourselves  ;)
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 orabanda

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Re: A small rattle in the engine department....
« Reply #16 on: 15.09. 2015 10:15 »
It is possible that 20,050 miles = blocked sludge trap

Offline Guy Wilson

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Re: A small rattle in the engine department....
« Reply #17 on: 15.09. 2015 10:26 »
Lets not lose sight of how much fun this is...we'd all be driving electric scooters if we did.
Guy

Offline Guy Wilson

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Re: A small rattle in the engine department....
« Reply #18 on: 15.09. 2015 12:35 »
It seems like the left hand con rod gave up. There's nothing left of the cup, just bits..The con rod  looks as thought may have had an existing crack or metal fatigue - part of the surface looks clean, like a recent break, the rest looks dull, like its been like that for a while as seen in the picture?
Any opinions on whether I can sleeve the barrels?
I have few evenings work here...
Guy

Online Greybeard

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Re: A small rattle in the engine department....
« Reply #19 on: 15.09. 2015 12:37 »
Bloody hell; nasty!  *sad2*

Online RichardL

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Re: A small rattle in the engine department....
« Reply #20 on: 15.09. 2015 13:46 »
Guy,

Sorry about your woes, but I'm sure you knew something was badly wrong when you took off the head. The award for correct diagnosis, of course, goes to Muskrat.

Richard L.
Plan on signing up for the world-wide 2017 DISTINGUISHED GENTLEMAN'S RIDE on September 30, 2018. Watch website at https://www.gentlemansride.com for details.

Online muskrat

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Re: A small rattle in the engine department....
« Reply #21 on: 15.09. 2015 13:52 »
G'day Guy. *sick* yes she's been going for some time. I'd like a dollar for every " bottom end seemed/felt fine" only to let go shortly after.
Sleeve the barrels" Short answer is yes. The broken skirts would need to be blended (all rough and sharp edges removed) and crack tested.
 *sad*
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Australia
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Offline Guy Wilson

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Re: A small rattle in the engine department....
« Reply #22 on: 15.09. 2015 14:32 »
Yes, thank you all. It could have been worse.. the cases seem intact although I won't know until I split them. I have a spare bottom end and barrels from a later bike. I was due to rid the bike in a rally on the 27th, so maybe, maybe, I might be able t o get it running on the second engine.
Good to get your opinion on sleeving the barrels. Again, it a benefit of this site that all you have to do is ask and answers come flooding back - all in a day! Much quicker than a Haynes manual - no disrespect
More photos to come.
Guy

Online groily

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Re: A small rattle in the engine department....
« Reply #23 on: 15.09. 2015 18:16 »
Faced with that little lot Guy, you get my vote as 'Positive Thinker of 2015'.
For saying 'it could be worse' (let's hope it isn't when you have looked at the cases properly, but jeez, it's bad enough); and for wanting be out and about in 12 days' time using another set of bits. Why not??!!
The Very Best of Luck to you.
Bill

Online morris

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Re: A small rattle in the engine department....
« Reply #24 on: 15.09. 2015 21:51 »
Faced with that little lot Guy, you get my vote as 'Positive Thinker of 2015'.

And mine...
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Offline trevinoz

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Re: A small rattle in the engine department....
« Reply #25 on: 15.09. 2015 22:05 »
Maybe you should have opened it and cleaned the sludge trap.

Online RichardL

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Re: A small rattle in the engine department....
« Reply #26 on: 16.09. 2015 00:28 »
Have you looked to see if there is still a bottom on your crankcase?
Plan on signing up for the world-wide 2017 DISTINGUISHED GENTLEMAN'S RIDE on September 30, 2018. Watch website at https://www.gentlemansride.com for details.

Offline Guy Wilson

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Re: A small rattle in the engine department....
« Reply #27 on: 16.09. 2015 04:47 »
The sludge trap was clear and there appears o be no external damage to the crankcase.
I have to wait a few days before I can do much more..
Guy

Online RichardL

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Re: A small rattle in the engine department....
« Reply #28 on: 16.09. 2015 05:50 »
Guy,

I'm probably chiming in too often, but now I'm really curious. Since you are talking about the external appearance of the crankcase, I take it you have not parted the cases. Without parting the cases you could not know if the sludge trap is clear. This leads me to think you may be mistaking the oil sump plate for the sludge trap. (Please pardon me now, if I am vastly underestimating your knowledge.) The sludge trap lives within the crankshaft and runs through both rod journals. It consists of a tube with holes in it that serve to separate, by centrifugal force, particulate that would otherwise stay in the oil and clog up the ways. If the sludge trap gets overloaded over some years, chunks might get released and block the holes leading to the journals, resulting in frozen rod bearings.

Richard L.
Plan on signing up for the world-wide 2017 DISTINGUISHED GENTLEMAN'S RIDE on September 30, 2018. Watch website at https://www.gentlemansride.com for details.

Offline Guy Wilson

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Re: A small rattle in the engine department....
« Reply #29 on: 16.09. 2015 07:04 »
You're quite right, thank you,  I'd assumed the oil plate and wire filter was the sump trap. Just proves again how useful this site is how helpful it is to talk to people..My knowledge is expanding..
Guy