Quote:
Originally Posted by Henry Floored
That Jeep engine is interesting in the positioning of the intake and exhaust ports.
Notice that the intake port centerline is lower than the exhaust?
Well I think that was done to prioritize intake port efficiency. This gives the intake port added room to more gently rise up to the back of the valve head.
I imagine that a Flathead Ford's intake port could be designed such that it curves up to the intake valve more gradually reducing the abrupt turn the charge must make in the valve pocket area.
I believe that if done carefully that the original intake port entrance could be maintained to line up with the stock intake manifold runners.
This would be a huge jump in volumetric efficiency in my humble opinion.
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My plan is to increase the intake port diameter and make the curve less abrupt and increase the window size going into the diameter under the valve. I have already done the increased size under the valve with the center exhaust port. The idea is to keep as close to intake manifold size as possible. The intake ports will drop straighter down and then curve upwards into the wider area above the valve guides.
Tod