You will have to replace the transmissions. The gear ratio you have is for 318's with 5000 rpm redlines and the diesels will be about half that or less. Transmissions for sure, probably props as well. You shouldn't have to replace the shafts, but they are the cheapest of all the parts you have and I wouldn't re-use them unless I was REALLY SURE they were straight and in good shape. It'd be a shame to haul the boat and do all that work and then have to do it again to replace a shaft or two. Why not go with 4/53's? 3/53's are a bit small. Turbo charged 4/53's might actually get you up on step again. 3/53's will be strickly displacement speeds. Fuel system should be replaced as well. I'm sure it's possible to get all the gas out of the tanks and re-use them, but I don't think I would. Good luck.
John --- On Mon, 4/13/09, 31 SS <[email protected]> wrote: From: 31 SS <[email protected]> Subject: [UnifliteWorld] Diesel Conversion To: "UnifliteWorld" <[email protected]> Date: Monday, April 13, 2009, 4:35 PM Hello, I am considering converting my 71 33 SS from the standard 318s to Detroit 353s. I am told that the 353s will bolt up to my paragon transmissions. I wanted to know if anybody has converted one of these boats to small diesels and what other modifications need to be done. I think I would be fine with the 1 1/4 shafts as the engines are only like 108HP ea. I have not bought the engines yet and I don't actually know what the guy wants for them but I bought a complete 318 standard rotation engine with transmission and V-drive with only 300 hours for $250.00 from him about 4 months ago so I assume I can get the diesels for a good price. They came out of an old cruzon running but most likely need to be overhauled. The parts are reasonable for these engines so I thought it may be a good way to go. Any thoughts? Thanks Ken --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/UnifliteWorld?hl=en -~----------~----~----~----~------~----~------~--~---
