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Old 01-07-2021, 05:05 AM
Alfredpwell Alfredpwell is offline
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Default Need advice, and possibly an engine block for 302 Ford

About 2-3 years ago, the engine in my GT40, built around a 1968 Ford 302 Mexico block, was exposed to a hard freeze, and blew its freeze plugs out. They were replaced, and the cooling system and engine pressure-tested to 22lbs without leakage. However, the engine had not been actually run, and today, following a carburetor rebuild, we fired it up and ran it for a while in the garage. After we shut it down, we noticed a small amount of antifreeze weeping out of what looks like a crack near the front of the block. This is on what would be the passenger's side of the block, but in my car is the (RHD) driver's side. It was a small amount, but it IS coolant. The engine ran fine, once we woke it from its rather sound sleep. It did not overheat or anything of that kind.

I'm trying to figure out what to do next with it. Can this be repaired? The crack is most likely from the water jacket at that front cylinder to the outside.

If it's not advisable to try to repair it, what do I replace the block with? The rotating assembly in this engine is very good quality- all SCAT forged pieces-, the heads are AFR 185s, the engine was built by a very good local shop (Burtonsville Performance Machining in PG County, MD) The engine has MAYBE fifty hours on itd- all those pieces are basically new. If I had to replace the block, I would want to just reuse all the present engine pieces excepting the engine block.

This is not on the engine builder. This isn't their fault, btw. It's mine, for not recalling that I was running distilled water in the car and for forgetting to drain the engine and cooling system.

So- suggestions much appreciated, and JimmyMac, if you have the perfect replacement block for this car, GT40P1149, please DO let me know. I know you have a garage the size of the Royal Albert Hall totally full of GT40 parts..... if you have something you can be persuaded to part with, I'd be ecstatic. That goes for anyone else who might have a suitable item.

Happy holidays, all. And, for what it's worth, she sounded great
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