I've posted this a couple of times before and have gotten some great feedback. I thought that I would outline what we have done to get this issue resolved and perhaps get a suggestion or two going forward.
Background - rebuilt '63 327/340; block, heads, cam, rods, the works. Put it all together, it runs fine but produces oil smoke, only out of the right hand cylinder bank, at idle. Pull the heads have them checked top to bottom, find no problems. Put the car back together, same problem. Put a new intake manifold on, the problem is better but still there. It appears that oil vapor is being pulled in from the cam chamber.
My guess is that the replacement block was probably decked before I got it. I have been using standard thickness intake manifold gaskets. The mating surfaces on the original intake manifold were a bit off which could have contributed to the problem. The surfaces on the replacement manifold are straight and true.
Should I be using thicker intake manifold gaskets??? Is there any compensation which needs be done if the block is decked?
Thanks! Joel
Background - rebuilt '63 327/340; block, heads, cam, rods, the works. Put it all together, it runs fine but produces oil smoke, only out of the right hand cylinder bank, at idle. Pull the heads have them checked top to bottom, find no problems. Put the car back together, same problem. Put a new intake manifold on, the problem is better but still there. It appears that oil vapor is being pulled in from the cam chamber.
My guess is that the replacement block was probably decked before I got it. I have been using standard thickness intake manifold gaskets. The mating surfaces on the original intake manifold were a bit off which could have contributed to the problem. The surfaces on the replacement manifold are straight and true.
Should I be using thicker intake manifold gaskets??? Is there any compensation which needs be done if the block is decked?
Thanks! Joel
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