Ear Shave Procedure - Enjoy! - Page 2 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
From the gas tank to the carbs
All fuel system discussion

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post #11 of 343 (permalink) Old 05-21-2011, 05:07 PM
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I agree, well done!

One item Ron suggested to me when I did mine was to get a longer bolt for the rear of the tank and a spacer that is about 1/2" or a little less. It made getting the left K&N filter on easier with less contact with the tank seam. You don't notice the lift at all with the seat on.

I obviously need a little more tweaking as my mileage is rather poor (40 mph or so). Very happy with the mod and the look though.
Thanks for the tip Unk.
Are you saying you are getting 40mpg mileage after the mod?
My bike was only getting 32-33mpg when it was running before. What is the typical average our bike "should" be getting.

1993 VN750 stock
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post #12 of 343 (permalink) Old 05-21-2011, 07:26 PM Thread Starter
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Thanks for the tip Unk.
My bike was only getting 32-33mpg when it was running before. What is the typical average our bike "should" be getting.
Whoa... a stock bike should get about 48-50 MPG!! Mods, larger tires, etc. will lower it.
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post #13 of 343 (permalink) Old 05-21-2011, 08:10 PM
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Quote:
Originally Posted by knicol View Post
Thanks for the tip Unk.
Are you saying you are getting 40mpg mileage after the mod?
My bike was only getting 32-33mpg when it was running before. What is the typical average our bike "should" be getting.
Quote:
Originally Posted by VoIP Doc View Post
Whoa... a stock bike should get about 48-50 MPG!! Mods, larger tires, etc. will lower it.
IMO 48-50 mpg is reasonable to expect on a stock vn750, on the highway, at a steady 60 mph.
Pushing speeds up will decrease fuel economy.
The larger jets installed with an ear shave will give more power, but burn more fuel. You can`t get something for nothing.

Changing out the 100/90 front tire for the larger diameter 110/90 causes the odometer to read lower and the mpg calculation to to give a lower reading, even if the actual fuel economy has not changed.

32-33 mpg seems very low fuel economy, unless you are a very agressive throttler.

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html

Last edited by OlHossCanada; 05-21-2011 at 08:17 PM.
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post #14 of 343 (permalink) Old 05-21-2011, 08:43 PM
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I do have the 110/90 front tire, and I used to drive to work on the highway at 70-75mph. I weigh 230.
So putting all that together does the 32-33mpg sound more normal, or is something else going on that I need to look into?

1993 VN750 stock
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post #15 of 343 (permalink) Old 05-21-2011, 09:25 PM Thread Starter
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Quote:
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I do have the 110/90 front tire, and I used to drive to work on the highway at 70-75mph. I weigh 230.
So putting all that together does the 32-33mpg sound more normal, or is something else going on that I need to look into?
Still sound low to me. Can't imagine these bikes getting less the 40 MPG.
Maybe others can chime in.
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post #16 of 343 (permalink) Old 05-21-2011, 10:39 PM
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I'm 310 pounds and mine gets no less than 46 mpg with a lot of hills, shifting, and off and on throttling.
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post #17 of 343 (permalink) Old 05-22-2011, 12:04 AM
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My 40mpg was after the ear shave but I know there are other minor issues at play. I'm sure I need to rebuild the petcock and have a kit on the way. If the bike is on the side stand i have a very very minor gas leak and have yet to investigate the source. Could be as minor as a hose not fully seated or the petcock diaphragm. I couldn't believe how much rust I got out of the tank when I first got the bike but I know the tank itself is not leaking. I never disassembled the petcock so other than hose seating that's my first go to. It's such a simple thing that it makes sense to do it anyway. Some other minor dialing in is in order as well. I know you sacrifice some mileage with the mod but still feel 40mph is on the low side. Not complaining, still having a blast with it.

When I spoke with Ron back during the mod he told me to only go 1-3/4 turns on the screws so I may need to dabble with that too. I see 2-1/2 turns used with the same jets. I have also need to synch the carbs and have been putting that off until I can borrow the gear from a buddy. It's all fun though.

Last edited by Unk; 05-22-2011 at 12:09 AM. Reason: Added follow-up.
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post #18 of 343 (permalink) Old 05-22-2011, 04:43 AM
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I wish I got 40mpg. I am lucky to get 30. I am 320 pounds. Bike runs great. So, I dunno what's sucking down the mileage. Standard sized tires.

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1989 Kawasaki Vulcan 750

Upgrades so Far:
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post #19 of 343 (permalink) Old 05-22-2011, 12:14 PM
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I get between 40 and 50 mpg. Once got 60, not sure how that happened though. Oversized tires, no earshave and screws turned to 2.5 turns. 185 lbs

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post #20 of 343 (permalink) Old 05-22-2011, 12:45 PM
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In this story Daniel Meyer relates how the 10% ethanol fuel in SD cut his mileage by up to a third. Just something else to consider.
http://lifeisaroad.com/stories/2004/...asWhatGas.html

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/showthread.php?t=9127

Last edited by OlHossCanada; 05-22-2011 at 12:49 PM.
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