Cylinder chamfer
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Novice
Joined: Jul 2021
Posts: 19
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From: NC
Cylinder chamfer
I have an interesting question for the gurus of this forum.
I understand why the chamfer at the bottom of the cylinder skirt is needed. However, after boring and honing the cylinder, the top also becomes very sharp. It seems to me that the sharp edge would become a stress concentration point, and also a heat concentration point, which would increase the chance of detonation.
However, I have not found any information anywhere about chamfering the top of the cylinder.
Should I at least blunt the sharp edge at the top of the cylinder?
I would really like to read some experienced mechanics' answers on this issue.
I understand why the chamfer at the bottom of the cylinder skirt is needed. However, after boring and honing the cylinder, the top also becomes very sharp. It seems to me that the sharp edge would become a stress concentration point, and also a heat concentration point, which would increase the chance of detonation.
However, I have not found any information anywhere about chamfering the top of the cylinder.
Should I at least blunt the sharp edge at the top of the cylinder?
I would really like to read some experienced mechanics' answers on this issue.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,048
Likes: 990
yea/nay
sharp edge knocked off sure can't hurt as they can cut into the flesh but a chamfer not.
you load the pistons from the bottom right?? here a chamfer is useful to help the rings squeeze in but not really needed with the right ring squeezer.
the chamfer at the top is a void that will collect carbon and most gaskets now have fire rings that the carbon can insulate.
i never have and nary an issue be it old iron or new.
a top loader can benefit but it will be slight, but again with the right tool not necessary.
sharp edge knocked off sure can't hurt as they can cut into the flesh but a chamfer not.
you load the pistons from the bottom right?? here a chamfer is useful to help the rings squeeze in but not really needed with the right ring squeezer.
the chamfer at the top is a void that will collect carbon and most gaskets now have fire rings that the carbon can insulate.
i never have and nary an issue be it old iron or new.
a top loader can benefit but it will be slight, but again with the right tool not necessary.
Thread Starter
|
Novice
Joined: Jul 2021
Posts: 19
Likes: 0
From: NC
yea/nay
sharp edge knocked off sure can't hurt as they can cut into the flesh but a chamfer not.
you load the pistons from the bottom right?? here a chamfer is useful to help the rings squeeze in but not really needed with the right ring squeezer.
the chamfer at the top is a void that will collect carbon and most gaskets now have fire rings that the carbon can insulate.
i never have and nary an issue be it old iron or new.
a top loader can benefit but it will be slight, but again with the right tool not necessary.
sharp edge knocked off sure can't hurt as they can cut into the flesh but a chamfer not.
you load the pistons from the bottom right?? here a chamfer is useful to help the rings squeeze in but not really needed with the right ring squeezer.
the chamfer at the top is a void that will collect carbon and most gaskets now have fire rings that the carbon can insulate.
i never have and nary an issue be it old iron or new.
a top loader can benefit but it will be slight, but again with the right tool not necessary.
Interesting point about the carbon buildup, hadn't thought of that...
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