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WORNBRAKES · 02-01-2003, 08:10 PM

I discovered that my #4 piston was missing a chunck out of the top of it. Not only is a chunck missing but there is about 7 nicks or gouges on it.
I was not exspecting to find this. I figured that I would have to redo the heads but had no idea that I would have to replace the pistons. I havent even checked all of the other internals, I just removed and took it apart today.
The only thihg that I can figure to do this to a piston top is a dropped valve. The valves for #4 dont look any worse than the rest. This is so disapointing. I was wanting to do this rebuild for 1000 or less but it looks as if it may cost a few extra dillars.
I measured my rod play prior to pulling them and found most within the .023 limit that my Haynes lists. My clearance on the #5 and #6 rods was .030+. I only have a phealer up to .030 I guess I will be replacing the rods also.
As I was pulling the pistons out, I found that my #3 was broken on between the rings. The dam thing basicly fell into pieces when I pulled it out.
Here are some pics of the #4

02-01-2003, 08:10 PM	#1
WORNBRAKES Senior Member Join Date: Jul 2001 Location: Hughesville, MD Posts: 1,350	So, I was taking apart my engine and...... I discovered that my #4 piston was missing a chunck out of the top of it. Not only is a chunck missing but there is about 7 nicks or gouges on it. I was not exspecting to find this. I figured that I would have to redo the heads but had no idea that I would have to replace the pistons. I havent even checked all of the other internals, I just removed and took it apart today. The only thihg that I can figure to do this to a piston top is a dropped valve. The valves for #4 dont look any worse than the rest. This is so disapointing. I was wanting to do this rebuild for 1000 or less but it looks as if it may cost a few extra dillars. I measured my rod play prior to pulling them and found most within the .023 limit that my Haynes lists. My clearance on the #5 and #6 rods was .030+. I only have a phealer up to .030 I guess I will be replacing the rods also. As I was pulling the pistons out, I found that my #3 was broken on between the rings. The dam thing basicly fell into pieces when I pulled it out. Here are some pics of the #4 Attached Images __________________ Mario and Mandy Hughesville, MD 20637 69 C10 305/350 71 K5 Basket case 75 K10 Rescue Parting out 77 MG Midget Parting out 15 6.7L Cummins Last edited by WORNBRAKES; 02-01-2003 at 08:21 PM.