Swapping from a 502 to a 496 HO
#11
Well, it is a long story, but the 502 has actually been rebuilt. It was rebored to a 509, pistons and rings changed, the heads refurbished, etc. The result was not good the compression was terrible on some cylinders(in the low 70s). In fact it was so bad that air/fuel mixture that passed the rings exploded down in the crankcase. The engine was sent back to the rebuilder ,taken down into pieces, the block was hot tanked and the cylinders measured up by an external shop. Everything was found to be OK. The rings were changed again and the engine put together. Compression went up a bit to 115 on the worst cylinder. Still not good. However, now it started to consume oil, actually on the starboard side of the engine where the compression was OK on all cylinders. The engine will now be taken back by the rebuilder(who also sold it in the first place) and it will serve as part payment for a new engine. sad story. Anyway, any ideas about the compatibility with a 496 HO? will I need a new wishbone for the silent choice?
#12
The 496 has had many problems also. Mercury is slowly working them out, but it is a drawn out process. You would definetely do better with a new 502. WE have 502/550HP in stock. These engines are brand new, and come complete with Merlin heads, Large oil pans, Manley severe duty valves, and Aluminum Intake manifold. This engine will work with your current accessories, and comes with a warranty. The price is 8,500.00 complete with Holley performance carburetor. We can also rebuild your 502 to about 600HP. Feel free to call us if you need anything.
Stephen
Stephen
#14
Our web address is Totalmap.net, but please ignore the mess. We started designing it before summer, and have been poker running ever since. I'm sure we'll finish it when its too cold to boat. Please feel free to call me, as I can send you info on everything.
Stephen
Stephen




