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« on: April 02, 2011, 05:39:32 PM »
I have recently bought a barge powered by a 1957 JK6 it has not run for years and I have been informed that it had head gasket failure. I have been talking to some locals who know JK6 engines from years ago and they say they are prone to cracking heads if run with low water or if they are allowed to freeze. I have bought spare JK6 off a generator with low hours that had been run without oil and seized. I have stripped the spare engine and the heads seem fine but the crank is u/s. The liners are perfect and the pistons show little wear however they are pitted where water has stood on top of them. I intend to refurbish the engine in the barge using parts off the generator if required and have a few specific questions, please bear in mind that the engine will have to be serviceable and reliable
1. are the heads prone to cracking and if they are can you see the cracks or do i need to pressure test the heads
2. is there a suitable 24v alternator that has the correct sized pulley as the dynamo - voltage regulator dont look to good
3. what is the best antifreeze to use when
I have a lister maual and a disk with some additional notes on, I also found a complete head gasket set in the engine room today :-)
Mick