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ContinuousWave: Whaler Performance
82 Montauk W/1982 Evinrude 90 Fuel useage
|Author||Topic: 82 Montauk W/1982 Evinrude 90 Fuel useage|
posted 06-16-2004 07:41 PM ET (US)
I'm planning on attending the BWGLCC North Channel Rendezvous this August. I haven't been on this long of a trip before. It has been suggested that boats should have a cruising range of approximately 75 Miles to be on the safe side.
I have an 82 Montauk with an 82 Evinrude 90, I don't have a speedometer on my rig and have never checked gas mileage before. Has anyone out there had any experience with a similar rig that can give me an idea what kind of mileage they're getting ?
I've got two 12 gallon tanks under the RPS, and of course can carry additional premixed gas in portable cans. I recently acquired a Garmin GPS but I don't know if I'm going to be able to get out for long enough intervals to do an accurate mileage check.
The engine was rebuilt last summer and is through the breakin period and running very well. In May at St. Ignace Rendezvous had it WOT 40.7 mph per GPS. Any information from experienced evinrude 90 owners would be appreciated...
Thanks in advance
posted 06-16-2004 07:55 PM ET (US)
I would expect roughly you should get between 2 and 2-1/2 MPG at cruising speeds. So 24 gallons = 48 to 72 miles, +/-.
Boy am I envious of you guys making that trip. I'll be up around Little Current July 10-July 17 +/-, and don't think I'll be able to get back away for the rendezvous...:-(
posted 06-17-2004 12:29 AM ET (US)
John/Kingfish (Great Handle),
Thanks for the insight re: Mileage....I figure with the two 12 gallon tanks and maybe an extra two 6 gallon cans of premix aboard I should be ok for the longest legs of the trip and then fill them up every opportunity I get...
Sorry to hear you can't make it, it would be good to see you again and to meet OUTRE' in person. Your winter Florida trip sounded like great fun.....thanks again...
posted 06-17-2004 11:02 AM ET (US)
Your 90 burns roughly 6gph at cruise(25-30mph). 18 gallons should fetch you 75-120 miles no problem. I would bring a single 6gal just in case.
posted 06-17-2004 03:28 PM ET (US)
Bigshot may very well be "righter" than I am, now that I think about it...the 2 to 2-1/2 MPG I was thinking about really comes from my 22 with a looper 225. The Montauk is a whole lot lighter with a hull that doesn't have to be pushed as hard. In clearer retrospect I don't remember taking any good numbers on our '82 Montauk when we had the '82 Evinrude on it. I know I haven't run a good check since we repowered with a 2001 Johnson.
If Bigshot is right, you should get his mileage (75-120), but with *24* gallons of fuel.
posted 06-17-2004 03:30 PM ET (US)
My 88hp on a Newport would burn about 6gph on the nose at roughly 4k(28+mph). Same engine as your 90. I went about 62 minutes and ran out of gas.
posted 06-17-2004 04:55 PM ET (US)
Kingfish / Bigshot,
Thanks much for the input.....Makes me feel a little more confident getting ready for the trip....
posted 06-17-2004 04:58 PM ET (US)
I agree with bigshot. I've got an 85 Montauk with a 85 90hp evinrude. Looked at my charts and calculate that running around last weekend, with more stops and starts, but generally at cruise, went about 60 miles on 18 gallons of gas. I think in a continuous run you could easily get 75+ miles on 18 gallons.
posted 06-17-2004 11:33 PM ET (US)
I also have this combination of a 90HP Johnson on a Montauk. I have gone the whole day, running about 50 miles, and used about 18 gallons, but part of that was at slow idle speed where there were speed restrictions on the intracoastal. But remember that a lot depends upon your speed and sea conditions. If you run just comfortable on plane and trimmed properly on plane and no faster, then it will be fairly economical. In my boat that is about 23 mph. If you have a head sea and are unable to plane, then your consumption may go up considerably. My suggestion is to carry as much gas as you can. I routinely carry the 24 gallon Pate tank plus 2 6 gallon tanks. This gives me plenty of range for what I do. But if I was going to do what you are thinking, then I might add even more.
posted 06-18-2004 09:37 AM ET (US)
Again.....Thanks to all of you for sharing your incite based on who knows how many hours on the water in your favorite Whalers.....As I said earlier I'm now feeling confident I can keep up with the Big Boys on this trip...Range wise anyway !
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