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I'm getting an analysis of the oil that was just changed to CYA. Yes there was an oil pressure issue that only showed up after the engine was put under load and the oil heated up and thinned out. This engine doesn't have an oil cooler, so the oil temps under load are probably pretty high, which...

At this point I'm buying a new long block and will swap that in so I don't lose the entire season. Once I get the new engine, Ill get the boat hauled and it shouldn't take me any longer than a week install it. Hopefully the builder gets back to me and I can this engine fixed and drop it in the...

The first oil change didn't look bad. The oil was dark, but i didn't see any metal. I figured HDEO mixed with all that assembly lube, plus a bottle of EOS turned the oil dark brown.

Duffyjr, My problem is this is a twin engine boat and the other engine is still strong, so I'd like to keep a matching set. I found a company that is selling new base engines (brand new long block with the oil pan, balancer, and water pump already installed)

Quote I don't have any suggestions other than to contact your rebuilder. Sure sounds to me like you did everything right during break-in. Disappointing, for sure! Let us know what the rebuilder has to say. That is another problem. He is in Florida and closed down for a couple of weeks due to...

Hi, This is my first post here, but I've been reading these forums for a couple of years now. I recently installed a rebuilt 5.7 long block in my boat to replace one of the engines that had low compression due to a leaking riser gasket. I broke in the flat tappet cam with 15w40 and a bottle of...