Have a look at the coolant slow release filter looking thingy and see if its a proper Cummins fleetguard canister and if it looks like its been changed. Keep in touch, If you like the boat, get it and the engines checked out thoroughly. Let your fingers do some walking in the phone book and call up some Cummins shops. I assume non turbed it's around 300horse. Get tight with a good machine shop.
So when you went to the parts store the parts man said Nine O Nothing! The injectors were replaced 17k miles ago as well. The tractor with the 903 sounds like it might be in better shape and the current owner seems to be one to maintain equipment. In ten round trips from New London Ct to Hope Town Bahamas I use 1 quart of oil in the port engine and nothing in the starboard engine,each leg of the journey. I just looked at an old magazine showing the truck specs for 74 models and it shows up to 320 horsepower and calls the engine models V-903. He added a gallon of oil, then went in the shop and filled two more gallon jugs to take along. I have done some 903 work years ago.
I didn't sell the tractor because I was afraid of the engine, the transmission developed a little extra grind that I didn't like. That's the only digital manual I've found outside of austrailia. However, for marine bits such as water cooled manifolds, heat exchangers that won't be the case. The raw water pump may be a problem in the next few years but I have been looking about. I would add a low sensibility for less than perfect fuel.
The boat has a bow deep V and rounded lines in the aft half of the hull, while ending in a usual transom at stern. Ford used them in some of there heavier trucks as well as other applications. And then, the fabrication of the engine beds for new mounting points. Hill time, Lift charges, ,,, Those old Cummins may look tall, but maybe not as tall as the new straight 6 cylinder engines that usually would replace it. Before you go turning it up go over all the basics first.
Absolutely,but considering repairing marine propulsion systems is what I have been doing for a living for 4 decades that can be said for any engine,particularly lightweight high horsepower versions with marginal cooling systems that are the mainstay of my business. If I figure out how to do it, I'll put a hull picture to better talk about the matter. Re-powering this old girl could be expensive. Also, would it be unwise to add a secondary fuel filter? I was always told to warm it up for an extra 5-10 minutes every morning and let it cool off good when done for the night. The old 555's and 903's in there day made alot of money for alot of people. Afterall,903 ci 320hp is a recipe for low stress,high duty cycle and longevity.
I had that once and have made very sure to never happen again. I think some of the freight companies than ran 903's in the 70's gave a few a run for their money. Yes, it was a neighbors, he bought it new, and I bought it from him, but that ol' 903 was as sweet sounding engine and made good power. It sounds like the boat you're looking at is a semi-displacement hull, that's ok too. . May have to make or repair what you have. It's not an engine you see too often.
So do detroit 8v-92's and others of the detroit family of two strokes. Also, we had to use a larger radiator than a regular Cummins or Cat. I would guess that that the V8 would be discounted. . It had the 903 natural. Could be a can of worms? That is how I posted it. Should I consider to change them, what engine would you suggest for a twin set to run a 49' fd boat, around 20t displacement, at hull speed for long trips? This re-entered production again late in 1998.
There are no starting aids such as glow plugs or grid heaters so the cranking speed must be good or you could experience a no start even though there is nothing wrong with the engine. Once they had been around for awhile and had a few hours up they could give all sorts of trouble. Since the engine was introduced evolutionary changes have included a larger camshaft, air-to-air after cooling and increased cylinder pressures allowing horsepowers to rise to the current 447 kW 600 bhp and 491 kW 660 bhp and the soon to be introduced twin-turbo 558 kW 750 bhp rating. Have to evaluate many issues before hiring a good surveyor and engine tech to get a serious assessment. Country United States Zip Code 92311 Day Phone 7602537411 Night Phone Cell Phone Fax Email Web Site Latitude Longitude Video No video available. It will honk some smoke out when started up cold to. I hope you have not purchased this boat yet.