What type of boat? wheel size? Gearing less run some test numbers on the boat. I am sure I can get you very close. Also RPMs at WOT.Looking at a boat with a 440 Yanmar.. 1000 hours on it. Does anyone have any good experiences with them? Are they really that bad? Does anybody have this engine with 2-3 thousand hours?
Larry,Do you think it is possible that this motor is part of the weak valve issue?
Larry,Thank you very much for the info on the 440....I will pass it on to the ownerNo The valve issue was on the early 440 mechanical motors. The motor in your JC Express was much newer and a very different motor with an completely different head assembly. The head was not changed because of the earlier problem it was changed for the purpose of meeting Tier emission level. The 370 was also changed.
And he should get 3500 RPM on a spring splash?....Also Rich Hunter wanted me to ask you what ratio gear you had on the 370 Yanmar.....because he just picked up a 375 3208 for his new 36 Stanley and is undecided about gear ratioI think he has a 22 X 22. I think the boat could swing either a 23 X 23 or 23 X 22
And he should get 3500 RPM on a spring splash?....Also Rich Hunter wanted me to ask you what ratio gear you had on the 370 Yanmar.....because he just picked up a 375 3208 for his new 36 Stanley and is undecided about gear ratio
yes it is...and i willNot to derail the thread- but is that the same Rich Hunter that used to be in the Freeport Tuna Club and stretched his Webbers Cove himself? Haven't heard about or talked to him in years! If it is, please say hello for me.
Now the job he did to that other boat- that would be a DEBF conversation starter for sure!