Re: [bolger] Re: MICRO TRAWLER
- I guess some of where I am coming from is that I like old engines. I like the thump, thump. of a slow turning single cylinder engine. I grew up with one lung gasoline engines and some kerosene engines. My boat engine has a top speed of 2000 rpms and I never run it over 1800 for me that falls right in place with using sail. There was an old fireboat in the Bahamas about 20 years ago named O-ble -O
and that was the sound the old engine made. O-ble-O O-bLe- O- Oble-O. She was an old New York Fire boat about 70ft long and the single cylinder engine likely turned over about 150 rpms when cruising. I used to have a video sound but moisture and time go to it. Forever lost. Doug
On 11/12/2012 01:36 PM, JOHN WALLIS wrote:Hard to beat modern 4 stroke outboards (Honda, Tohatsu, etc.) for fuel economy, serviceability, power to weight ratio and reliability. Also no worries with bilge venting, through hulls and fuel tank placement. Another plus is portability to a different vessel in the future. I run a Tohatsu MFS 20 HP on a 15' Diablo and am quite happy with the quiet, reliable, powerful and efficient performance.
- True Doug, Ford FE gas truck engines had larger diameter crankshafts and cam profiles designed more for low RPM torque, compared to the equivalent car engines. Some GMC truck gassers even had exhaust valve rotators and stellite valve seats, anticipating heavier engine load demands.Your Isuzu may have had oil starvation issues if the oilpan capacity was not increased and the pickup lowered. I have a marinized 1956 Packard V8 with the oilpan capacity increased from 5 quarts to 4 gallons and an integral oil cooler built in. Most working boats of 25-30 feet and up have gone diesel but that may not be a practical option for the MT being discussed. 4 cycle outboards have been around for several years now and have a good track record even in small commercial fishboats that get hard use.