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A dumb question BUT????

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Al47

02-05-2007 17:51:52




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Can someone explain how a piston pin and the bushing in connecting rod gets lubrication? There is very little gap or space for oil,and no direct oil line. Thanks for any comments
Al




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baldwin

02-20-2007 13:49:14




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 Re: A dumb question BUT???? in reply to Al47, 02-05-2007 17:51:52  
there is oil spray jets in the pan that face up to spray oil at the pins



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steve(ill)

02-06-2007 19:30:49




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 Re: A dumb question BUT???? in reply to Al47, 02-05-2007 17:51:52  
on the B- C motors, the cam shaft is hollow and oil is pumped down the center. there are 4 holes in the shaft in line with the 4 pistons. the oil sprays a 360 degree pattern as it rotates. the oil hits the bottom of the piston, goes into two small holes on the wrist pin boss, drains down on top of the connecting rods and drips into holes in the rod to lube those bearings. the whole system only has 12-15 pounds of oil pressure, but works good.--- crank bearings normally is lubed by drilled ports from the cam bearing areas.

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37 chief

02-05-2007 22:01:10




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 Re: A dumb question BUT???? in reply to Al47, 02-05-2007 17:51:52  
The piston pin gets oil in different ways. Most is just splished with oil from the internal engine parts. I have a A/C model M that has a hole drilled from the rod bearing all the way to the piston pin and gets oil from the rod bearing. Another neat trick is to have a stedy stream of oil sprayed to the pin area from a small hole in the oil pressure side of the engine. I have JD motor that has that set-up. I am sure there may be other ways. Stan

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