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| Name: |
Rooster
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| Subject: |
for those in the know
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Date:
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2/2/2011 11:26:10 AM
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Are the motors of today more powerful than the motors of 10-15 years ago, given the hp and prop dimensions are the same?
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| Name: |
spyke420
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| Subject: |
for those in the know
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2/2/2011 12:11:14 PM
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you answered your own question
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| Name: |
Ulysses E. McGill
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for those in the know
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2/2/2011 12:24:51 PM (updated 2/2/2011 12:34:04 PM)
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HP is a measurement and does not change... What is different is how you get and use the power. Technology advancements make it possible to get more efficient power. Newer engines produce more power with less energy and typically do so in a lighter package. If the package is lighter, you will notice better performance for the same HP while using less fuel. There is also the issue of the power band. Better technology can make it possible to deliver more efficient power over a wider RPM range.
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| Name: |
CAT BOAT
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for those in the know
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2/2/2011 2:23:32 PM
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Sure, with a given size (cu.in. or CC's) Todays engines produce more power when compared to those a few years old. 10-15 years ago, is not that long. EFI and other advancememts were avaliable then. Maybe you meant to type 20+ years ago. Lets not get sidetracked into your question and tie it to effeciency as far as emissions and fuel consumption. If you can make an engine burn lots of fuel, you can make that engine make lots of power. (reliability becomes an issue) On that same note, you can manage a lessor amount of fuel to make the same power/hp with todays technology in a smaller engine (cubes or CC's). Or, take a really BIG cu.in. engine and make BIG BIG usable power. Yes, usable and quite friendly around the dock. A task not as easy as years ago. So, that does make your question odd! Remember the OLD Johnson outboards, that looked like a Fridge on the back of the boat? (Nope, I don't, only saw a picture, I'm not that old) Well, it took that much engine to make say 85hp. Today, that 85hp engine is MUCH smaller, and effecient. In about 1996, an EFI502 cu. in. Mercruiser produced 415hp. Today, that same size (502 cu. in.) engine off the shelf makes 525+++, and is called an HP525 (note number change because they are reffering to HP) It gets more power not from size, but fuel/intake delivery enhancements, and exhaust enhancements. You also mention "given the same prop dimentions". Engine height, and propeller designes have advanced a lot, really more than you think to enhance overall performance as well. It was not in your question, but hull design has made lots of advancements, because what we ask from our boats are different than years past. Kinda like "Tri-toons", "Catamaran Hulls", "Pontoon lifting strakes" "Pads" and the likes. A pontoon used to be for easing around, now you have them pulling ski's and tubes. Even very small engines in PWC's are very fast and efficient from Supercharger technology. Sorry for the long answer, but I found your questions quite interesting. :)
Respectfully,
Steve
ps. But to answer your posted questions AS ASK, an 85hp engine built in 1980 vs. a 85ph engine built in 2011 may look different but they both still have 85hp. "Just sayin".
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| Name: |
Rooster
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| Subject: |
for those in the know
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Date:
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2/2/2011 3:34:20 PM
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Thanks to all. Great explanations- nutshell seems to be - hp is hp no matter how you dice it - but today's engines take that same hp and do so much more with it as far as fuel efficiency, power to weight ratios and size. I can really tell CAT likes the big blocks. Have a good one, folks.
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| Name: |
HP HQ
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| Subject: |
for those in the know
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2/2/2011 4:14:52 PM
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Technology is a great thing, and improvements are being made everyday, but as for me, I will take a Big Ole Slobbering Big Block anyday!!
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| Name: |
spyke420
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| Subject: |
for those in the know
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Date:
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2/2/2011 6:18:31 PM
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1 horse power = the ability to carry 100 lbs. 330 feet in 1 minute or 745.7 watts
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| Name: |
spyke420
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| Subject: |
for those in the know
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2/2/2011 6:19:29 PM
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and I'll have the big block also , as long as it wears a bow tie !
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| Name: |
spyke420
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| Subject: |
for those in the know
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2/2/2011 6:21:09 PM
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INJECTED OR BLOWN !
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| Name: |
CAT BOAT
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| Subject: |
for those in the know
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2/2/2011 7:27:50 PM
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I'd rather be blown, than injected! :0 Just sayin'.
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| Name: |
Summer Lover
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| Subject: |
You da man CAT
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2/2/2011 7:41:05 PM
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| Name: |
HP HQ
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| Subject: |
You da man CAT
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2/2/2011 8:39:38 PM
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I hear ya there!!
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| Name: |
Mack
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| Subject: |
for those in the know
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2/2/2011 8:49:48 PM
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But, isn't it true that a blown engine performs better only in the short term, with much more wear? Whereas, an injected engine performs better over the long run???
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| Name: |
CAT BOAT
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| Subject: |
You da man CAT
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Date:
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2/2/2011 8:56:03 PM
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LMAO, Jeff.... U r a nut. Sommer, you as well.
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| Name: |
CAT BOAT
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| Subject: |
for those in the know
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2/2/2011 8:57:24 PM
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I ain't touchin' that MACK. Are you being serious???? Or fishing sir.
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| Name: |
Mack
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| Subject: |
Cat, of course I am Serious>>
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Date:
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2/2/2011 9:28:11 PM
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The older you get, the more you think about the Drag Strip vs. the 500 milers.
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| Name: |
HP HQ
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| Subject: |
for those in the know
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2/2/2011 11:39:35 PM
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At this point of the night, I am thinking more like Blown and Alcohol injected!!
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| Name: |
GoneFishin
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| Subject: |
for those in the know
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2/3/2011 1:12:56 AM
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Now, I know why one refers to an engine as "she". How many HP is your engine? "She" is 525 HP. Wow, is that on gas. No way, she is blown and alcohol injected. That baby must really move with that power. Move she does..............
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| Name: |
CAT BOAT
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| Subject: |
Now thats......
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2/3/2011 9:07:36 AM
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Now thats some funny chit right there. LOL. I'm headed to the lake.
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