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Old 07-03-2019, 05:54 PM   #43
anothercarguy's Avatar
Join Date: Jan 2013
Location: Bowen island, BC
Posts: 64
Default Re: 59AB Cooling System Advice Needed from the Experts (not an overheating issue)

To close the loop and follow up on this one...the rad checked out fine. So this took me back to the engine and the possibility of head gasket failure (or start of failure). So while the coolant was already drained, 48 bolts later and looks like we have the answer. The head gasket was leaking into the combustion chambers (likely worst under higher engine load)...and apparently could not be duplicated at low load in the shop.

So, I've included a bunch of pictures to show.

For all you sharp eyed viewers, you will notice there are cracks that run between the upper mid bolt and the lower water jacket hole in between cylinders 1 & 2, 3 & 4, 5 & 6 and 7 & 8. I believe they were there when the engine went together, and I believe I was told that they wouldn't be a problem. What do you guys think? Do they need to be stitched together/repaired or are they fine as is? I plan to use the graphite composite gaskets this time...copper can be used for pennies!
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