Run the crap out of them! I used to run patrol boats on Lake Washington. We had 350 Chevy based Volvo sterndrives (YUK). We cruised at 3600 rpm and got 3000 plus hours between re-powers. Top end was 4500 rpm and we ran half the length of the Lake at WOT routinely. Seattle PD ran 34 foot Uniflites with twin 440 Chrysler inboards for years in the 70's, 80's and into the 90's. Those engines ran for thousands of hours and they also cruised over 3000 rpm. They spent a great deal of time putting around at 1500 rpm as well, but the point is the marine engines are designed to run much higher for much longer than the pickup truck engines. Run the crap out of it! When it dies, rebuild it! Unless you're made of money and want to pay more than the boat is worth to put a diesel in it. Nothing wrong with that, but it's well beyond the capacity of MY cash flow. Good luck!
John --- On Fri, 9/11/09, dodgetkboy78 <[email protected]> wrote: From: dodgetkboy78 <[email protected]> Subject: [UnifliteWorld] Re: Prop pitch, GPH, cruising speed, RPM To: "UnifliteWorld" <[email protected]> Date: Friday, September 11, 2009, 5:02 PM I put a lot of hours on it, in fact, last weekend I put 27.5 hours on it, ran like a top other than a relay. The reason I want to go diesel, is safer, no ignition system to go out, and no need to carry extra fuel. It holds 110 gallons. I found a 2700 hr 555 cu in cummins, with an extra with a broken crank, both twin discs, for 2K. A Big yacht take out. Problem is, the transmission, seems most are like 2-1. I really would need a 1-1, to use the small prop, not to mention peak torque would be around 2000rpm. I don't know, I was mostly wondering if it was normal to cruise these things at displacement speed, or to run the crap out of them. 1MPG or 2MPG.............. LOL --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
