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| very odd piston gouge ?! https://www.slantsix.org/forum/viewtopic.php?t=37001 |
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| Author: | Volare4life [ Sun Sep 06, 2009 8:45 am ] |
| Post subject: | very odd piston gouge ?! |
Got a quick question once I dissassembled my '76 225 for a rebuild and got her all cleaned up and noticed a strange gouge (?) in the #2 piston  so should I be worried ? I checked the valves, non of them are chipped of gouged and spin freely with springs removed.-Mike |
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| Author: | Doctor Dodge [ Sun Sep 06, 2009 9:18 am ] |
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Looks to me like the manufacturer added that "feature" when the top of the new piston was machined. I can hear the machinest now... "that wont hurt anything, it's good".   DD |
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| Author: | Wizard [ Sun Sep 06, 2009 9:57 am ] |
| Post subject: | |
That one spiral gouge is typical of worn out automatic machining mechanism that failed to retract cutter correctly after facing the top of piston. Run it. Cheers, Wizard |
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| Author: | slantzilla [ Sun Sep 06, 2009 1:07 pm ] |
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It will add swirl to the mixture in the chamber resulting in better mileage and more horsepower. GM called it Vortec. 
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| Author: | Volare4life [ Sun Sep 06, 2009 7:03 pm ] |
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really zilla, WoW not lol, but how much deck is available on stock pistons ? Is it better to have glass smooth tops on the pistons or those "rings" that are machined ok to have ? -Mike |
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| Author: | slantzilla [ Sun Sep 06, 2009 8:23 pm ] |
| Post subject: | |
Actually the Vortec had the swirls cast into the intake runners. I would not worry about marks in the piston tops as long as long as they are not too deep. 
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| Author: | Shazzam66 [ Sun Sep 06, 2009 8:35 pm ] |
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maybe try to get another piston if your worried about it?  I would. there is a perfectly good explaination why it has that mark on the top: aliens have visited your engine and are performing crop circles on the top of your pistons.... 
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