Cat 3196 - fuel consumption?

Any boat test that you will find with the same HP 3196's, should net roughly the same fuel burn figures per each RPM level. Then just compare burn at a given rpm say at 1950rpm's with the SOG of the Offshore at that rpm.......If memory serves me right a pair of 3196's will burn 55-60gph for both at 1950rpm's......

~36GPH [per pair] @ 1950 RPM per Cat propload curve 660 HP 'E' rating...

http://attachments.impcorporation.com/6568/CAT 3196.pdf

Hi,

It should be noted that the figures given on the CAT Spec sheet under the heading English are US Gals not Imperial ones.

3196 fuel consumption

Hi,
I have 2003 model year 3196's rated at 660 HP. in a 98 54' Sea Ray DA. My fuel burn at 1850 RPM (which is 21 knots) is 18 gallons per hour per engine. That's about a 62% load factor.
At 1950 the burn rate is about 21 gallons per hour (per engine) and a cruise speed of app. 22.4 knots and 70% load.
At 2050 it's burning about 24 GPH per engine and a cruise speed of app 24.2 knots at an 80% load. I don't run it any harder than this on cruises (greater than 3 hours at speed), and usually at the 70% or so load factor.
WOT is 2330 rpms and fuel burn is app 30 GPH per engine at 100% load and 30 knots.
Engine temps are 199 at cruise speed.
Total hours are about 885.
Hope this helps
Steve

You won't find an E rating in a private yacht, usually....... Usually CAT installs a "C" rated engine in most planing hull yachts like Searay's Cabo's Hatteras etc.....That fuel burn sounds high and more in tune with the 800hp version of the 3196........50gph sounds closer to factual if memory serves me right....

Wrong.
Go get yourself a CAT 'Yacht and Pleasurecraft Engine selection Guide' a/k/a the facts.
The older 3196--and current C12 Acert--are 660BHP 'E' engines.
Cat's 'C'-rated engines (Maximum Continuous) mention applications such as ferries, harbor tugs, fishing boats, displacement hull yachts...[454BHP @2100 rpm, BTW]
Cat's 'E'-rated engines (High Performance) mention applications such as Pleasure craft, fast patrol craft, and fast yachts...

There seems to be no small amount of disinformation found on these threads coming from folks who 'shoot from the lip'. As my friend, the late Charlie Pigadis--who never suffered fools gladly--used to say, in his Noo Yawk accent, "Heah's five dollahs--go to da movies."

I will second Lorens comments on this.

It is also interesting to note that the figures posted by YF Member Steven David are very close to thise given in the CAT Spec Sheet linked too earlier.

36 GPH [per pair] @ 1950 RPM means each engine burns 18 [GPH] @ 1950 RPM, is this correct?

I have a 56 Neptunus Express and these are the exact numbers I also get with my 3196's. 1100 hours.

Here are actual numbers on my neighbors 2004 54 Offshore. He has Cat C12 700hp ea. His fuel burn at 1950 rpm is 46 gph, load at 70% cruising at 14 knots.

I just ran a set of C12's about 2 months ago for 3 days straight at cruise. At 80%, I want to say they burn 54 GPH for the pair.

That would correspond to my neighbors fuel burn because he is operating at a little less than 70% load.