Jassman

Some surprising numbers for both 502 vs 525 in the 400SS and the same with the diesels.

http://www.boattest.com/Resources/vi...spx?NewsID=621

DOCS OUT

I am unable to interpret these data. Would you please, politely(without refering to me as, 'you moron, don't you get it'), explain it's meaning. Thanks.

1bagger

The gas engines don't seem too out of line . The 525s are faster and burn more fuel . I thought the best cruise would be faster with the 525s vs 415 . You really pay for that top speed .

The big surprise to me is the lower HP Volvo has a faster top speed but burns more fuel than the Yanmars .
Do you think the difference can be in set Up .
Paul

Jassman

It's good to ask q's..that's how we all learn..If someone calls you a moron, take it in stride, it's just immature or their inferior complex that they think they know it all. I learn everyday.

1Bagger explained it well...but if you are able, print the data, put it side by side, and then do a cross reference on the rpms, speeds, fuel burn, and then you'll get a better grasp on these numbers. Good Luck.

Spicy

Thanks Jeff for the link... I have a friend that hooked his lap top up to mytwin 502/ 415 HP 400SS when I bought it last year and those numbers are damn close, I didnt know if that was good or not compared to my 36 Concept I had previously, I just filled it up when it needed gas....

We called Formula and they sent us the cut sheet for my paticular boat which we took with us on the Sea Trial, comparing MPH at which RPM etc... It was a perfect day, only 50 gallons in the boat, no canvas up 3 guys and 40 degree weather and the boat went 53.2MPH on GPS.... All summer with "all" the gear and canvas up etc, the boat will get up to 47-48MPH... But the cruise is still there at 36-37MPH...
I love this boat but want to get something faster as we have discussed in another thread, but if it doesnt sell then April 1 it will go back in the water..

Thanks again for the link..

double_trouble

I am half considering trading in my 2006 400ss with 496ho's (listed in classifieds) for a 2005 40pc with the yanmar 440 diesels. I am having a hard time believing the 40pc can really cruise at 1.49mpg. I think the data is wrong. Anyone know for sure?

aquaforce

That is not off much at all compared to other charts I have seen. That is why I kind of changed my search to diesel. I want the range and efficiency more than speed.