Pig stopped running last week, suddenly.
Engine would turn backwards some but not forwards. A quick look in the top end didn't reveal much. We suspected a stator screw had come loose. Unfortunately no such luck. After removing the exhaust and lifting the barrel a bit we could see swarf in the piton bosses. The Malossi barrel won't seem to come out with the engine in so set about dropping it.
On removing the barrel a chunk of seal shook out of that casing. Splitting it now unavoidable.
Got the crank out to find this
[URL=http://s1223.photobucket.com/albums/dd5 ... 47437e.jpg][IMG]http://i1223.photobucket.com/albums/dd5 ... 47437e.jpg[/IMG][/URL]
Supposedly a genuine seal too.
Spring has taken a good run round the top end -
Anyone think this piston is salvageable?
Problem with the pig
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rosscla
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Last edited by rosscla on Sun Mar 22, 2015 8:58 pm, edited 1 time in total.
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
fixted it for yarosscla wrote:Pig stopped running last week, suddenly.
Engine would turn backwards some but not forwards. A quick look in the top end didn't reveal much. We suspected a stator screw had come loose. Unfortunately no such luck. After removing the exhaust and lifting the barrel a bit we could see swarf in the piton bosses. The Malossi barrel won't seem to come out with the engine in so set about dropping it.
On removing the barrel a chunk of seal shook out of that casing. Splitting it now unavoidable.
Got the crank out to find this
Supposedly a genuine seal too.
Spring has taken a good run round the top end -
Anyone think this piston is salvageable?
Last edited by Muppet on Sun Mar 22, 2015 8:59 pm, edited 1 time in total.
C’est la vie
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rosscla
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Something funny going on with the pics
What did you change?
What did you change?
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
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rosscla
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Piston , if you can fix that I'd be grateful...
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
Personally I'd junk it, suppose you could clean it up a bit if you wanted but pistonkits aren't overly expensive although I've not looked at Malossi stuff in quite a while. Is the bore itself alright?
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rosscla
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Bore's not bad, no bad scores to speak of.
Piston kits are 75 - 99 £ unless there's another option, might be woth looking at it in €...
Piston kits are 75 - 99 £ unless there's another option, might be woth looking at it in €...
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
you could clean it up and put new rings on , ive seen far worse running. that's a heat sieze on the exhaust port side, nowt to do with the seal spring. locktite and dot punch your new seal in.
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rosscla
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No, that's the recess to access the circlip, you can see it both sides, just not a pretty casting I suspect
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."