Inlet Manifold Leak

[Gaz64]

Originally Posted by undy

You need to check the gaps between the intake and the head. You might have a misalignment/uneven gap. No gasket will seal well with that. Place the manifold down without a gasket under it and run a feeler gauge around on both ends and on the china wall. they should be symmetrical. You might have an intake that's been cut wrong.

Originally Posted by zrayr

Are you putting the gasket on dry in the area of the leak ? If so, try some of the permetex thermostat & water pump gasket sealer. It is superior to every other type of RTV. Your idea of a waterless coolant is just a bandaid, and has little chance of success anyway. Your better off with another strategy.

Z.

I agree with both of the boys above.

A gasket never fails on it's own.

It's a uneven clamping issue, intake not machined at same angle as the heads, or the two intake faces aren't parallel end to end.

As stated above, fit the intake to bare heads and the abnormality will show up from a feeler gauge test.