Re: Intake manifold crack

Posted by Ross On 2013/7/16 18:15:10

The intake manifold is double walled in that area so that exhaust gasses can circulate around the intake ports for fuel vaporization. A crack there will not affect the running but if left alone could get loud.

I have seen that before on cars where that heating passage was heavily choked with carbon. My guess is that moisture would condense there on a short startup and sometime later freeze.

So while you have your manifold apart I would separate the halves and do a little excavation up in there. Sandblasting is the best, and then you can do the crack repair as OD mentions. Or find another manifold. If it is a 2bbl, I have about 6 or 7 I would sell you.

Oh, and I have correct heat shields for 53.