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[danzigfan]

Part of main bearings?

[danzigfan]

Fresh oil is in plus lifter aditiv and filter....I have 200km to drive today so, if it dies on me it will die with a bang

[dave the builder]

O ring from a cam cover gasket change dropped in 
spring clip  retainer for a little end 

has the knock gone ?
was the pock up blocked ?

[danzigfan]

Strainer wasn't blocked at all, what concerns me is those three metal parts...they look like part of the block or rod

[countrywoman]

Wrist pin retainer and I suspect a chunk of piston, that circlip is not working its way past the piston without damage and the little end pin will be rubbing on the bore scoring it. Strip down time.

[dave the builder]

Strip down time.

bore scopes are cheap

[YZ250]

Wrist pin retainer and I suspect a chunk of piston, that circlip is not working its way past the piston without damage and the little end pin will be rubbing on the bore scoring it. Strip down time.

Although this doesn’t change the outcome of a strip down, if memory serves me correctly, the V6 piston Gudgeon Pin clip can drop out and get past the piston with no damage as the piston doesn’t have a full skirt. It is cut away for the pin and clip on the sides and as the top ring, middle ring and oil ring are above the gudgeon pin, it has nothing to stop it falling downwards. The full skirt IS on the con rod stroke sides. As said above though, the un-restrained pin will do some damage. I may be wrong and stand to be corrected without being offended. 
As I say, it changes nothing as the clip needs replacing to stop the pin moving, so a strip down/rebuild is inevitable. 
Not what you need to hear I know. 

[STEMO]

Wrist pin retainer and I suspect a chunk of piston, that circlip is not working its way past the piston without damage and the little end pin will be rubbing on the bore scoring it. Strip down time.

Although this doesn’t change the outcome of a strip down, if memory serves me correctly, the V6 piston Gudgeon Pin clip can drop out and get past the piston with no damage as the piston doesn’t have a full skirt. It is cut away for the pin and clip on the sides and as the top ring, middle ring and oil ring are above the gudgeon pin, it has nothing to stop it falling downwards. The full skirt IS on the con rod stroke sides. As said above though, the un-restrained pin will do some damage. I may be wrong and stand to be corrected without being offended. 
As I say, it changes nothing as the clip needs replacing to stop the pin moving, so a strip down/rebuild is inevitable. 
Not what you need to hear I know. 

Just as well, really......tosser

[YZ250]

Wrist pin retainer and I suspect a chunk of piston, that circlip is not working its way past the piston without damage and the little end pin will be rubbing on the bore scoring it. Strip down time.

Although this doesn’t change the outcome of a strip down, if memory serves me correctly, the V6 piston Gudgeon Pin clip can drop out and get past the piston with no damage as the piston doesn’t have a full skirt. It is cut away for the pin and clip on the sides and as the top ring, middle ring and oil ring are above the gudgeon pin, it has nothing to stop it falling downwards. The full skirt IS on the con rod stroke sides. As said above though, the un-restrained pin will do some damage. I may be wrong and stand to be corrected without being offended. 
As I say, it changes nothing as the clip needs replacing to stop the pin moving, so a strip down/rebuild is inevitable. 
Not what you need to hear I know. 

Just as well, really...... tosser 

Well, within reason. 

[STEMO]

Wrist pin retainer and I suspect a chunk of piston, that circlip is not working its way past the piston without damage and the little end pin will be rubbing on the bore scoring it. Strip down time.

Although this doesn’t change the outcome of a strip down, if memory serves me correctly, the V6 piston Gudgeon Pin clip can drop out and get past the piston with no damage as the piston doesn’t have a full skirt. It is cut away for the pin and clip on the sides and as the top ring, middle ring and oil ring are above the gudgeon pin, it has nothing to stop it falling downwards. The full skirt IS on the con rod stroke sides. As said above though, the un-restrained pin will do some damage. I may be wrong and stand to be corrected without being offended. 
As I say, it changes nothing as the clip needs replacing to stop the pin moving, so a strip down/rebuild is inevitable. 
Not what you need to hear I know. 

Just as well, really...... tosser 

Well, within reason. 

You know I love you really 

[danzigfan]

Well...200 km later, the noise is gone It sounded like sewing machine for 150 km and then slowly disappered...Strange or just preparing for something worse