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Author Topic:   Whaler 31 Re-Power

trophyfish1958 posted 02-23-2004 08:52 PM ET (US)
Re: re-powering a WHALER 31, made in the late eighties for a few years. I am thinking about purchasing one that had gas power and changing over to diesel. Any idea what kind of mileage the diesel-powered boat got? Thanks
jimh posted 02-24-2004 11:59 PM ET (US)
You ought to read what Pascoe has to say about diesel vs gasoline engines.
http://www.yachtsurvey.com/GasDiesel.htm
phonejones posted 01-14-2006 01:33 PM ET (US)
I am currently repowering with two Marine Max diesels. They are based on the [AM General] Hummer block and are direct drop ins for replacing GM 350 or 454 gassers. They develop 275-HP with around 450-FT-LBS torque at low end. Currently I have 7.4-liter fuel injected Crusaders. I should improve performance at crusing with larger props, 20x23, as well as cut fuel consumption fifty perecent.
jimh posted 01-15-2006 11:10 AM ET (US)
Sounds like you have these engines:
http://www.amgeneral.com/vehicles_gep_productinfo.php/amSid/ 53d85bcea5a8ae182d2ebb154f259a13
frostbite posted 01-22-2006 06:35 PM ET (US)
After reading Pascoe's myths about diesel engines, I must say that I disagree with him on all points.
I find the information that Pascoe has provided is misleading, at best.
nytugcapt posted 01-23-2006 12:09 PM ET (US)
Frostbite is right on. That article is full of misinformation. It would be a shame for anyone considering a repower to think that is an accurate comparison.
The Judge posted 01-23-2006 01:54 PM ET (US)
My main question is this:
If I buy a new Dodge pickup with a cummins diesel it is a $4500 option. Why does that SAME engine "marinized" cost $40,000 as an option? There CAN'T be $35,000 in upgrades.
COINJAM posted 01-24-2006 08:26 AM ET (US)
The 89"s came with Cummins 250's - - not enough power..The 300's will give you all the speed you need and consumption of about 1.5 miles to the gallon @2250 rpm.. You'll cruise at 24 knots all day long.....a little noisy, but, you'll have a great boat..good luck
crashq posted 01-28-2006 04:00 AM ET (US)
Could you guys elaborate a little on the specifics of why you disagree with the article? It would be enlightening. Thakns.
frostbite posted 01-28-2006 09:39 AM ET (US)
crashq,
Pascoe makes blanket statements and qualifies the statements with bits of fact that aren't always relevant.
Myth #1-Diesel is safer than gas.
Pascoe explains gas engines are safer than flying. This may be true, but isn't flying is safer than just about anything?
Recent unexpected flying lesson:
[url]www.news-press.com/apps/pbcs.dll/article?AID=/20060112/NEWS0110/60112006/1075[url]
Myth #2,4,5, Essentially the same
Pascoe faults neglected diesels for breaking down. This is true also, if you don't maintain your engine it may fail prematurely.
Myth #3 Diesels are more economical.
Pascoe says gasoline engines cost less to run, especially if you don't use them. True true true.
Comparing a 340 HP gas engine with a 350 HP Caterpillar diesel? That is like comparing grapes to grapefruit.
In real life I don't think you will find many people yanking their diesel engines to replace them with gasoline powered ones.
Thats my slanted view chief, we welcome yours.

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Author	Topic: Whaler 31 Re-Power
trophyfish1958	posted 02-23-2004 08:52 PM ET (US) Re: re-powering a WHALER 31, made in the late eighties for a few years. I am thinking about purchasing one that had gas power and changing over to diesel. Any idea what kind of mileage the diesel-powered boat got? Thanks
jimh	posted 02-24-2004 11:59 PM ET (US) You ought to read what Pascoe has to say about diesel vs gasoline engines. http://www.yachtsurvey.com/GasDiesel.htm
phonejones	posted 01-14-2006 01:33 PM ET (US) I am currently repowering with two Marine Max diesels. They are based on the [AM General] Hummer block and are direct drop ins for replacing GM 350 or 454 gassers. They develop 275-HP with around 450-FT-LBS torque at low end. Currently I have 7.4-liter fuel injected Crusaders. I should improve performance at crusing with larger props, 20x23, as well as cut fuel consumption fifty perecent.
jimh	posted 01-15-2006 11:10 AM ET (US) Sounds like you have these engines: http://www.amgeneral.com/vehicles_gep_productinfo.php/amSid/ 53d85bcea5a8ae182d2ebb154f259a13
frostbite	posted 01-22-2006 06:35 PM ET (US) After reading Pascoe's myths about diesel engines, I must say that I disagree with him on all points. I find the information that Pascoe has provided is misleading, at best.
nytugcapt	posted 01-23-2006 12:09 PM ET (US) Frostbite is right on. That article is full of misinformation. It would be a shame for anyone considering a repower to think that is an accurate comparison.
The Judge	posted 01-23-2006 01:54 PM ET (US) My main question is this: If I buy a new Dodge pickup with a cummins diesel it is a $4500 option. Why does that SAME engine "marinized" cost $40,000 as an option? There CAN'T be $35,000 in upgrades.
COINJAM	posted 01-24-2006 08:26 AM ET (US) The 89"s came with Cummins 250's - - not enough power..The 300's will give you all the speed you need and consumption of about 1.5 miles to the gallon @2250 rpm.. You'll cruise at 24 knots all day long.....a little noisy, but, you'll have a great boat..good luck
crashq	posted 01-28-2006 04:00 AM ET (US) Could you guys elaborate a little on the specifics of why you disagree with the article? It would be enlightening. Thakns.
frostbite	posted 01-28-2006 09:39 AM ET (US) crashq, Pascoe makes blanket statements and qualifies the statements with bits of fact that aren't always relevant. Myth #1-Diesel is safer than gas. Pascoe explains gas engines are safer than flying. This may be true, but isn't flying is safer than just about anything? Recent unexpected flying lesson: [url]www.news-press.com/apps/pbcs.dll/article?AID=/20060112/NEWS0110/60112006/1075[url] Myth #2,4,5, Essentially the same Pascoe faults neglected diesels for breaking down. This is true also, if you don't maintain your engine it may fail prematurely. Myth #3 Diesels are more economical. Pascoe says gasoline engines cost less to run, especially if you don't use them. True true true. Comparing a 340 HP gas engine with a 350 HP Caterpillar diesel? That is like comparing grapes to grapefruit. In real life I don't think you will find many people yanking their diesel engines to replace them with gasoline powered ones. Thats my slanted view chief, we welcome yours.