Quote:
Originally Posted by Smallblock454
And if you have 14 psi negative pressure in a crankcase and you have 14 psi positive pressure in the IMS tube, the pressure difference is 28 PSI.
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I am thinking this is not a problem, freeze plugs are often used in oil galleries and oil pressure can be higher than that.
I cannot seem to find any engineering data for freeze plugs on the web as far as what kind of pressures they can hold. I may have to experiment. I have feelers out for a damaged IMS shaft that I can plug and pressure test, hopefully I will find one before too long.
Silber