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Highboy34 · 08-02-2014, 11:23 AM

A couple of Zephyr thoughts: Because the Columbia takes vacuum directly from the intake manifold, be sure the lines are good throughout or it will suck air and give you a leanness problem.

These engines had poor crankcase ventilation and condensation readily built up in engines that were regularly run to less than full hot condition, i.e. short distances on/off, etc. On
my 37, I noticed a little pimple on the outside of the intake riser. I picked at it and found a corrosion hole in the intake runner through from the runner bottom down into the lifter valley in the block. Condensation had completely corroded it away. We cut away the side of the intake riser and patched in material there and on the bottom of the manifold. no problems since. You may wish to check your runners carefully to be sure they are good.

Good luck with your Zephyr project. Beautiful cars.

08-02-2014, 11:23 AM	#55
Highboy34 Senior Member Join Date: May 2010 Location: Boerne, TX Posts: 142	Re: Yes, they are still out there NUMBER 2 A couple of Zephyr thoughts: Because the Columbia takes vacuum directly from the intake manifold, be sure the lines are good throughout or it will suck air and give you a leanness problem. These engines had poor crankcase ventilation and condensation readily built up in engines that were regularly run to less than full hot condition, i.e. short distances on/off, etc. On my 37, I noticed a little pimple on the outside of the intake riser. I picked at it and found a corrosion hole in the intake runner through from the runner bottom down into the lifter valley in the block. Condensation had completely corroded it away. We cut away the side of the intake riser and patched in material there and on the bottom of the manifold. no problems since. You may wish to check your runners carefully to be sure they are good. Good luck with your Zephyr project. Beautiful cars.