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Allis G piston stand out question.
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Richardmo View Drop Down
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Joined: 12 Sep 2009
Location: Rolla mo.
Points: 1746 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Richardmo Quote  Post ReplyReply Direct Link To This Post Topic: Allis G piston stand out question.
    Posted: 12 Mar 2012 at 10:28pm

Well i am back on the Allis G engine and finally completely took the engine apart.

the pistons stand above the block at least .064 i measure this with a feeler gauge.
I think the pistons are hitting the head causing a knocking noise.
Question is there anything i can do with this block? 
 
I have extra block laying around and notice those pistons only stand out just above the block. 
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Matt (Jordan,MN) View Drop Down
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Joined: 12 Sep 2009
Location: Jordan, MN
Points: 3801 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Matt (Jordan,MN) Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2012 at 12:58am
I had this problem with my WD45 Diesel. I took the pistons to the engine machineist and had them machine .020 off the head of the piston and the knock went away. This made me vary happy since i was trying to figure out  what was makeing the knock for 2 years.                                Matt
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Richardmo View Drop Down
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Joined: 12 Sep 2009
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Points: 1746 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Richardmo Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2012 at 8:53pm
Thanks Matt
I wounder how the top ring or the piston will hold up by machine off the top of the piston?
 
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Kip-Utah View Drop Down
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Joined: 14 Sep 2009
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Points: 912 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Kip-Utah Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2012 at 8:49am

Perhaps a "poor boy" fix is stacking 2 head gaskets? I would definitely copper coat, or light application of lithium grease between them if going this route. Kip 
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