Cracked piston pin bosses

Jethro · Post by **Jethro** » Wed Nov 24, 2010 8:50 pm

Not sure if this is a common find or not, I searched the forum and couldn't find anything about it. I hope these pics come through. What does the 5 inside of this standard piston mean?

Jethro

LOUD MOUSE · Post by **LOUD MOUSE** » Wed Nov 24, 2010 9:00 pm

Nothing there. .............lm

Jethro wrote:Not sure if this is a common find or not, I searched the forum and couldn't find anything about it. I hope these pics come through. What does the 5 inside of this standard piston mean?

Jethro

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Jethro · Post by **Jethro** » Thu Nov 25, 2010 12:47 am

Sorry that was my first attempt at that feature. Got a couple of pics up this time.

Jethro

jensen · Post by **jensen** » Thu Nov 25, 2010 2:25 am

Hi,

No info about the 5, but I have seen these cracks more then once, sometimes (mostly) they will run to the piston floor. The strangest thing is that the cracked piston is found mostly om the right side by me.

Jensen

LOUD MOUSE · Post by **LOUD MOUSE** » Thu Nov 25, 2010 7:57 am

It is a mold identifier.
Can ya send that piston to me?. ..............lm

Jethro wrote:Not sure if this is a common find or not, I searched the forum and couldn't find anything about it. I hope these pics come through. What does the 5 inside of this standard piston mean?

Jethro

Jethro · Post by **Jethro** » Thu Nov 25, 2010 3:20 pm

Sure LM, I'll get it in the mail some time next week. Any significance?, or just wanting to take a gander? So one of the pistons from this engine has both bosses cracked and the other piston has just a small hairline in one boss. I am assuming that these pistons are useless. What causes the cracks?

Jethro

LOUD MOUSE · Post by **LOUD MOUSE** » Thu Nov 25, 2010 4:35 pm

I would really like to look at both pistons for sure.
Were the pins difficult to remove?. ..........lm

Jethro wrote:Sure LM, I'll get it in the mail some time next week. Any significance?, or just wanting to take a gander? So one of the pistons from this engine has both bosses cracked and the other piston has just a small hairline in one boss. I am assuming that these pistons are useless. What causes the cracks?

Jethro

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Cracked piston pin bosses

Cracked piston pin bosses

Re: Cracked piston pin bosses

Re: Cracked piston pin bosses