Volvo Penty 5.7 Detuned to Make a 225 HP
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Printed Date: January-13-2025 at 2:42pm
Topic: Volvo Penty 5.7 Detuned to Make a 225 HP
Posted By: Bri892001
Subject: Volvo Penty 5.7 Detuned to Make a 225 HP
Date Posted: November-29-2012 at 2:32am
I found this kind of interesting:
http://www.boattest.com/engine-review/Volvo-Penta/6000024_V8-225_2013" rel="nofollow - http://www.boattest.com/engine-review/Volvo-Penta/6000024_V8-225_2013
Volvo Penta made a their catalyzed 225 out of a 5.7 V8. So, right from a 4.3 V6 to a 5.7 V8.
It's funny, cause they have 300hp plus engines in the same block. The test said that fuel burn is similar or better to similar boats with a 4.3.
Wonder how they did it... and why?
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Replies:
Posted By: 63 Skier
Date Posted: November-29-2012 at 11:14am
My guess is one factor is they don't want to catalyze the 4.3, though not sure about that.
I think their comments about torque and smoothness are a big factor. When we were test driving I/O boats a while back, we drove 4.3 V6 boats and very simmilar 5.0 V8 boats. The HP rating was very close between them, but the real world driving was a major difference. The V8 is quiet, smooth, much stronger out of the hole. The 4.3 is a little screamer that does quite well on the high end but no comparison in overall feel.
I assume they get the low fuel consumption by de-tuning to the 225 HP level, the V8 cruising at 3,000 rpm vs. the V6 cruising the same speed at 3,500 rpm wouldn't be a lot different in fuel burn. Also, in a 20-22 ft. bowrider the V6 is really having to work hard.
By the way, I'd pay $500 extra just for the yellow dipstick! Plus, I like that they list "full pressure lubrication" as a key feature, I'm sure there are a lot of splash lubrication engines being offered!
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'63 American Skier - '98 Sport Nautique
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Posted By: Bri892001
Date Posted: November-29-2012 at 12:35pm
I like how the dipstick can be used as the motor oil suck out point.
Also, the top mounted alternator is kind of nice too.
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