Is this normal oil consumption?
11-15-2010, 08:00 AM
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Is this normal oil consumption? I have a LS7 based 427 (Eagle crank, forged pistions, etc.) in my C5 and it is using some oil. In the beginning it was using lots of oil (400 miles/qt) and that turned out to be 2 bad valve stem seals.
Now that it has over 5k miles on it and should be fully broken in I am getting about 2200 miles/qt. Is this about normal or is it high for an aftermarket built engine?
I don't know what the clearances were set to as I never got a build sheet from SDPC.
Now that it has over 5k miles on it and should be fully broken in I am getting about 2200 miles/qt. Is this about normal or is it high for an aftermarket built engine?
I don't know what the clearances were set to as I never got a build sheet from SDPC.
11-16-2010, 11:18 PM
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was your car smoking a lot when you would turn it on? and everytime you steped on it it would smoke and then smoke a lil after that? and when you step on it your dipstick pops up a little .. ? those are my cars synthoms and idk if thats the valve stem seals
11-17-2010, 06:54 AM
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Those symtoms are similar to what I experienced when I had valve stem problems except for the dipstick. In my case it turned out that the installed height of the valve springs was not set properly. This caused 2 of the valve spring retainers to crush 2 of the valve stem seals. The top half of those 2 valve stem seals was completly separated from the bottom part.
