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Author Topic:   Whaler 31 Re-Power
trophyfish1958 posted 02-23-2004 08:52 PM ET (US)   Profile for trophyfish1958   Send Email to trophyfish1958  
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)     Profile for jimh  Send Email to jimh     
You ought to read what Pascoe has to say about diesel vs gasoline engines.

phonejones posted 01-14-2006 01:33 PM ET (US)     Profile for phonejones  Send Email to phonejones     
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)     Profile for jimh  Send Email to jimh     
Sounds like you have these engines: 53d85bcea5a8ae182d2ebb154f259a13

frostbite posted 01-22-2006 06:35 PM ET (US)     Profile for frostbite  Send Email to frostbite     
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)     Profile for nytugcapt  Send Email to nytugcapt     
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)     Profile for The Judge  Send Email to The Judge     
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)     Profile for COINJAM  Send Email to COINJAM     
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)     Profile for crashq  Send Email to crashq     
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)     Profile for frostbite  Send Email to frostbite     

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:

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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