Damn ! Block is ruined - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mikep · 07-01-2002, 06:19 PM

Ive noticed a marked increase in oil consumption over the last few months so I yanked the motor out this morning to take a look inside. Looks like one of my wrist pin retainers came out and the wrist pin has gouged the hell out of one of my cylinders. Looks like I am going to have to get a new piston and probably a new block. Anyone ever sleeved a block? This bore job isnt 8 months old so the rest of the cylinders are fine...or is it worth it?

CE20934 · 07-01-2002, 06:46 PM

Depends on how big of a gouge you have in the cylinder wall. When I took my block to the machinist, it had some healthy scratches in 3 cylinders. I was scared I'd have to spend $$$ to have it sleeved, but the machinist told me a sleeve costs about $100 per cylinder.

Luckily all my scratches were under 0.015" deep, so a 0.030" overbore cleaned them right up. A good machinst will stand by his work, so a sleeve isn't much to worry about. One of my instructors had a sleeved block from this machinist, and he said he'd had no problems with it at all.

mikep · 07-01-2002, 07:17 PM

Lets just put it this way. I didnt think the cylinder walls were as thick as this gouge is deep. I just about caught water. Im glad I didnt because the damage would have been a lot worse had I done that. As it stands now the piston is even salvageable given a new pin that is. I called the machine shop and all told I'm probably looking at $150 plus rings and of course bearings as the one on that rod looks like crap. The steel crank looks like new though. Those babies are tough!

07-01-2002, 06:19 PM	#1
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	Damn ! Block is ruined Ive noticed a marked increase in oil consumption over the last few months so I yanked the motor out this morning to take a look inside. Looks like one of my wrist pin retainers came out and the wrist pin has gouged the hell out of one of my cylinders. Looks like I am going to have to get a new piston and probably a new block. Anyone ever sleeved a block? This bore job isnt 8 months old so the rest of the cylinders are fine...or is it worth it? __________________ No truck :-(

07-01-2002, 06:46 PM	#2
CE20934 Senior Member Join Date: Apr 2002 Location: Help! I'm in an office park with its own network of freeways! Posts: 470	Depends on how big of a gouge you have in the cylinder wall. When I took my block to the machinist, it had some healthy scratches in 3 cylinders. I was scared I'd have to spend $$$ to have it sleeved, but the machinist told me a sleeve costs about $100 per cylinder. Luckily all my scratches were under 0.015" deep, so a 0.030" overbore cleaned them right up. A good machinst will stand by his work, so a sleeve isn't much to worry about. One of my instructors had a sleeved block from this machinist, and he said he'd had no problems with it at all. __________________ '67 C20--427 tall deck/SM420, 4.10 HO52 (Michigan has not been kind to the Old Man) '95 Caprice--355 LT1/T56/3.42 8.5" 10-bolt (daily driver, almost 300k on the chassis) '07 Outback--wife's car. 125k & counting. No head gasket or transmission issues yet. fingers crossed

07-01-2002, 07:17 PM	#3
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	Lets just put it this way. I didnt think the cylinder walls were as thick as this gouge is deep. I just about caught water. Im glad I didnt because the damage would have been a lot worse had I done that. As it stands now the piston is even salvageable given a new pin that is. I called the machine shop and all told I'm probably looking at $150 plus rings and of course bearings as the one on that rod looks like crap. The steel crank looks like new though. Those babies are tough! __________________ No truck :-(

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