Fuel Mileage - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 25 (permalink) Old 04-05-2010, 10:14 PM Thread Starter
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Fuel Mileage

Evening everyone,I was able to take a nice ride this evening,rode about 100 miles.I averaged about 29 miles per gallon,my bike only has 473 miles now,I have yet to get down on it,it has not been over about 4200 rpm's.I have built several auto engines and believe in a proper breakin.My question is what kind of mileage can I expect after the engine is broken well.
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post #2 of 25 (permalink) Old 04-05-2010, 10:16 PM
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45-50 if you keep it below 4,000 rpm. Less if you don't.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
_____________________________________________
"Black Beauty"
1989 VN750 acquired December, 2008, 6,711 miles
Currently 23,298 miles

Old Blue
2001 Honda CMX250 Rebel acquired July, 2008

1987 VN750 project bike, acquired August, 2009, 33,000 miles and balancer sticking out of the case, currently awaiting attention and parts
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post #3 of 25 (permalink) Old 04-05-2010, 10:51 PM
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I did the earshave. I get about 120 miles to a tank - that's with some left in it to get me to the station. And I usually highway at about 4-5K rpm.

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post #4 of 25 (permalink) Old 04-05-2010, 11:14 PM
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I can go about 130 miles then I have to go to reserve, with the earshave I average 47mpg.


85 VN700 "Old Yella"

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Last edited by lance328; 04-05-2010 at 11:16 PM.
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post #5 of 25 (permalink) Old 04-05-2010, 11:15 PM
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Current average in the about 5500 miles I've put on my '93 is 52.12. Best tank was 61.11, which was on a commute cycle that didn't go faster than 55 MPH and was mostly at 45. Given the gearing and unexceptional aerodynamics, these bikes suffer in the mileage department going much faster than that. My worst tank has been 40.87, a turnpike trip at 75 MPH into a strong headwind.
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post #6 of 25 (permalink) Old 04-06-2010, 06:05 AM
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I average about 50 mpg at a steady indicated 60 mph, but it drops to around 35 at an indicated 85 mph. Charlieb37, if you have a new engine, or a newly rebuilt engine, I hope you are not doing an easy break in. You will wind up with glazed cylinders, rings that didn't seat, low compression, and lots of oil burning. I have also built several auto engines, including drag race engines. And whether I built the engine or bought it, I broke it in hard. I just bought a brand new Kawasaki EX500, and it saw redline at 100 miles, and had several full throttle runs from 20 mph to 80 mph within the first 20 miles. This is necessary to seat the rings. Here is my favorite site for how to properly break in an engine.
http://www.mototuneusa.com/break_in_secrets.htm I have broken in engines this way all my life, and never had a problem. All my engines were long lived, made good power, and did not burn oil. I've had some of them apart, and never found any damage from breaking them in this way. Best of luck with your engine. Jerry.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
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Last edited by VN750Rider/Jerry; 04-06-2010 at 06:10 AM.
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post #7 of 25 (permalink) Old 04-06-2010, 07:18 AM
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Quote:
Originally Posted by charlieb37 View Post
Evening everyone,I was able to take a nice ride this evening,rode about 100 miles.I averaged about 29 miles per gallon,my bike only has 473 miles now,I have yet to get down on it,it has not been over about 4200 rpm's.I have built several auto engines and believe in a proper breakin.My question is what kind of mileage can I expect after the engine is broken well.
That seems very low to me, my vn750s usually got 50-55 with a one time high of 60 mpg...
I don't think you will get a good reading on one tank full because the small 3.5 gal. tank will not get filled exact each time and that will make a difference, check it over several tanks (3-4 at least) and average them for a more accurate mpg average...
I believe that if you only average 29mpg there is something out of whack somewhere, with the bike or something serious in your riding style, I think you should get at least 50 on average... I did on the 3 vn750s I owned...
2 were bought new and got about the same during break in as after, maybe because I didn't ride them as hard during break in, and did very short oil changes...
Thats only my opinion, not fact, for sure...
Have a good one...Old Dog...

Southern Central Tennessee.......
Now on the Dark Side......
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Last edited by Old Dog; 04-06-2010 at 07:21 AM.
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post #8 of 25 (permalink) Old 04-06-2010, 12:54 PM
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Ear shave, 140 mains, 3 turns out, K&N knockoffs, Maier bug shield, 50-55 mpg, 32k miles? 250lb rider. Stock tire size.

DT

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Last edited by dirtrack650; 04-06-2010 at 06:11 PM. Reason: tire size
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post #9 of 25 (permalink) Old 04-06-2010, 04:00 PM
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Do any of those reporting more than 51 mpg have the larger front tire or checked mileage with a GPS? I was getting right at 50 until I got the 110 on front. I know it gave a more accurate speedo reading, and I'm assuming a more accurate odometer reading as well.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
_____________________________________________
"Black Beauty"
1989 VN750 acquired December, 2008, 6,711 miles
Currently 23,298 miles

Old Blue
2001 Honda CMX250 Rebel acquired July, 2008

1987 VN750 project bike, acquired August, 2009, 33,000 miles and balancer sticking out of the case, currently awaiting attention and parts
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post #10 of 25 (permalink) Old 04-06-2010, 04:31 PM
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I get low 40's (41 to 44). Obviously, this is significantly lower than what other people are reporting. I got a GPS out and checked the speed and it's showing (the speedometer) around 10% faster than actual. Tires: it has a 100 on the front and a 140 on the rear.
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