50 MPG !!!! - Honda Fury Forums: Honda Chopper Forum
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post #1 of 65 (permalink) Old 09-04-2010, 10:17 PM Thread Starter
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50 MPG !!!!

Nooooo Not a misprint.

Prior to my engine work, I got between 39 - 42 MPG.....Never higher than 42, closer to "40ish" consistently. After the Pistons/Cams....eng mod, I run 91 octane because of the compression ration, I'm getting better mileage....GO Figure. My first fill-up (after the break-in period) was 45.....I thought oops....mistake......today I rode almost 300 miles......the first tank today yielded a number of 47.....I thought.....WTF.........rode until I had 105 on the odometer, filled up and OMG.......exactly 50 MPG.....and I wasn't babying 'her' either.....did quite a few WOT's and got between 90-95 MPH more than once....Heh Heh......

Just an FYI for all you engine engineers out there......
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post #2 of 65 (permalink) Old 09-04-2010, 11:02 PM
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Thats cool. Mine gets 47 every single tank. It's freaky.
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post #3 of 65 (permalink) Old 09-04-2010, 11:06 PM
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I have gotten 49 the last three tanks.

That is odd that with the work your getting better mileage than before and you got more power. Not what one would think
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post #4 of 65 (permalink) Old 09-04-2010, 11:29 PM
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Originally Posted by JimmyFarris View Post
.......OMG.......exactly 50 MPG.....and I wasn't babying 'her' either.....did quite a few WOT's and got between 90-95 MPH more than once....Heh Heh......

Just an FYI for all you engine engineers out there......
Way to go Jimmy! While I'm impressed, I'm not totally surprised. The engine mods you did obviously increased the efficiency of your engine, i.e., you're making more power per unit displacement on less fuel. Since the stock Fury is in such a mild state of tune to begin with, the changes you made, mainly the increase in compression ratio, could be expected to bring it closer to optimal efficiency. And, I suspect, you did it without giving away anything in dependability, which is often the case. The only downside is, now you have to run the more-expensive higher-octane fuel; not a major consideration. Congratulations! And you did it first!

Cheers

The entirety of the road of Human Evolution is littered with examples that failed. Now, you're all that's left. Scary, isn't it?
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post #5 of 65 (permalink) Old 09-05-2010, 06:42 AM
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Jimmy, thatís a great added bonus. I suspect BarFury is right on the analysis. Big deal with running high octane, that is only about .75 cents per fill up, maybe $30-$40 per riding season. Are you expecting any better performance as the engine breaks in more?





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post #6 of 65 (permalink) Old 09-05-2010, 07:30 AM
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Sounds like you have your bike tuned perfectly now. I've never checked the milage and will have to take a look now. What is your oil temp now? Thanks
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post #7 of 65 (permalink) Old 09-05-2010, 09:56 AM Thread Starter
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Richard, I think she's completely broke in now....nearly 1,000 miles on the mod....the only change yet next week is installing the power commander and ditching the fuggin' controller....the power commander has many more adjustments for the fuel/air ratio....the 'tech' who tuned her, said it won't give me more power, just better ratio throughout all regimes of operations.

Dave, I'm gonna' order the oil temp gauge/dipstick today......will advise when it's in and operating.
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post #8 of 65 (permalink) Old 09-05-2010, 09:57 AM
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thats weird. the only time i dont get at least 47-48 is in the winter, im guessing because of the longer warm ups and it takes longer for the engine to get to normal operating temp. during the summer my light never comes on before 125 miles, but the best ive got is 51 mpg. the last week i opened it up to 80-90 mph numerous times on a tank of gas and when i stopped for fuel at 120 miles the pump still showed i had 1 gallon in the tank i have pipes and intake and no aftermarket computer...
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post #9 of 65 (permalink) Old 09-05-2010, 10:27 AM Thread Starter
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ogwutang....That's very interesting.....Thanks for sharing
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post #10 of 65 (permalink) Old 09-05-2010, 11:07 AM
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now during the winter when im riding in 20-30 degree temps, my light usually comes on around 95 miles or so. it sux. hell, my reserve on my 88 intruder 750 wont come on till around 100 miles or so, and the carbs need to be synched lol
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