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 Post subject: Oil change - what's this
PostPosted: Thu Mar 27, 2008 10:31 am 
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I was doing the oil change on Ribena yesterday and this was stuck to the magnetic sump plug
Image

It looks like a circlip from the side of one of the pistons -keeps the gudgeon pin in place.

Number one piston oils up the spark plug pretty quick but what's the worse that could happen assuming this is where it's from.....scoring of the bore??

Compression test shows all 4 cylinders are up around the 160 to 170.

What do you think.

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PostPosted: Thu Mar 27, 2008 10:34 am 
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i reckon thats of the gearbox

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PostPosted: Thu Mar 27, 2008 10:35 am 
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It looks like a gudgeon pin circlip, but could also the gearbox outrigger bearing circlip - though that is less likely.


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PostPosted: Thu Mar 27, 2008 10:36 am 
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Looks identical to the ones I pulled out of my old pistons recently...

I'm not familiar with the intricacies of the gearbox, so I don't know of any circlips in there...

Someone else want to confirm?

EDIT: Well that's two :wink:


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PostPosted: Thu Mar 27, 2008 10:45 am 
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Looks a bit big for a gudgeon pin one- they are only 5/8" and used on smallbores only. My bet is the idler gear bearing one from the case, it doesn't do much- the bearings are as `tight as' in there.

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 Post subject:
PostPosted: Thu Mar 27, 2008 12:18 pm 
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Here's another pic and the good Doc is right again (top[ of the class...as per usual). The circlip on the right is from an old set of pistons and as you can see, the two are completely different - So, it's got to be from the gearbox somewhere.
Image

Forgot to say that stuck in with all the usual bits and pieces stuck to the sump plug was the remains of one of the rubber valve stem seals. Could be from Number 1 which is why I'm going through the oil and spark plugs in number one cylinder. Better take the head off soon and do some investigations.

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PostPosted: Thu Mar 27, 2008 12:28 pm 
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How the hell does a stem seal get down there?? :lol:


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PostPosted: Thu Mar 27, 2008 12:30 pm 
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smac wrote:
How the hell does a stem seal get down there?? :lol:


Pushrod hole?


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PostPosted: Thu Mar 27, 2008 1:10 pm 
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smac wrote:
How the hell does a stem seal get down there??


It was a bit mangled :lol: 3 or 4 pieces but you could tell what it was

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 Post subject:
PostPosted: Thu Mar 27, 2008 1:55 pm 
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I wanna know how the hell he got the 50 cent piece out of the sump hole :shock: :shock: :shock: :shock: :wink: :wink: :wink:

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PostPosted: Thu Mar 27, 2008 2:14 pm 
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Magic :!:

Abra-ca-bloody-dabra.

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 Post subject:
PostPosted: Thu Mar 27, 2008 3:32 pm 
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Gadgets mini wrote:
I wanna know how the hell he got the 50 cent piece out of the sump hole :shock: :shock: :shock: :shock: :wink: :wink: :wink:


Gawrd your thick - you just roll it up and it slips though the hole easy - schi :roll:

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 Post subject:
PostPosted: Thu Mar 27, 2008 3:35 pm 
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ROFLMAO :lol: :lol: :lol: :lol: :lol: :lol:

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 Post subject:
PostPosted: Thu Mar 27, 2008 3:51 pm 
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I agree with the Doc, I also think it is from the gearbox idler gear.


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 Post subject:
PostPosted: Thu Mar 27, 2008 4:30 pm 
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its the circlip for the drop gear bearing. there are two, one on each side of the bearing to hold it into place. I just replaced this bearing and it looks to fit the bill. :cry: It may or may not become and issue....

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