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Old 05-12-2013, 01:48 PM   #1
art leong
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Join Date: Dec 2001
Location: Richmond Hill, Georgia
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Default Even my luck is good somtimes. Cracked bedplate and mainweb

I usually have to manufacture any good luck. But I've had a drop in oil pressure for most of this season. I've changed oil brands, rod bearings, even changed the oil pump, and the gauge. With no change.
I used to have 35 pounds at idle hot, now it dropped to 20 hot. 80 pounds cold, now 60 pounds cold.
I pulled the motor to look at the main bearings. Pulled off the bed plate, and had one bearing stay on the crank (#5). Looked at it and it was worn thru to the copper on the front half of the bearing. I proceed to look at the other bearings and they seem okay. As I push them out and clean and number them. I notice a ridge across the back of the bearing paralel with the crank. I look and sure enough I find a crack in the bedplate main webbing. Upon further inspection I find 2 other cracks in the bedplate main webbing. And a crack in the block main webbing on number 3 (right across the oil feed obviously the cause of the low pressure).
I haven't inspected the crank yet, but it doesn't look bad.
I'm so glad I found this before it puked all over the race track. And I blamed a connecting rod or something else for the catastropy
My question is has any one else had this happen? I'm trying to figure why?
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