Gas Mileage

Gas Mileage 26 Jul 2006 16:57 #64980

Chris1112 Topic Author Offline User Posts: 3 Thank you received: 0	I have a 79-kz 750 twin, and i am only getting 31 miles to the gallon is this normal? If this is not normal does anybody have some suggestions on what to start looking? The bike runs good I ride it to work almost every day, 25 mile round trip. Thanks Chris Post edited by: Chris1112, at: 2006/07/26 21:04
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Gas Mileage 26 Jul 2006 22:43 #65065

kzmarvo Offline User Posts: 344 Thank you received: 0	Sounds about right, how fast do you ride? Watch it folks,i have sticky fingers when it comes to a nice looking set of handle bars:)
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Gas Mileage 26 Jul 2006 22:57 #65071

steell Offline User Posts: 6850 Thank you received: 207	Sheesh, I hammer on them and waste a lot of gas and the worst I get is 45 mpg, with 55 mpg being normal Sounds like it's time for a complete tune up, including adjusting the valve clearances. KD9JUR
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Gas Mileage 27 Jul 2006 10:05 #65153

Chris1112 Topic Author Offline User Posts: 3 Thank you received: 0	I pretty much ride at a normal pace 65 to70 on the highway. I have been thinking of doing a complete tune up for awhile now. Is there anything that you all would recommend that I don’t have listed? Spark plugs Change Oil Change Oil Filter Replace Points Adjust valves Clean Carburetors Dial in the timing
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Gas Mileage 27 Jul 2006 10:34 #65163

steell Offline User Posts: 6850 Thank you received: 207	Check the resistance of the coils and spark plug caps, and scour eBay for KZ440 timing advancer/pick up/ignitor to convert your bike to electronic ignition (but I bid on every one listed for a decent price) Post edited by: steell, at: 2006/07/27 13:35 KD9JUR
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Gas Mileage 27 Jul 2006 11:03 #65173

Chris1112
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steell wrote:

Check the resistance of the coils and spark plug caps, and scour eBay for KZ440 timing advancer/pick up/ignitor to convert your bike to electronic ignition (but I bid on every one listed for a decent price)

Thanks for the advice. I got a question or two.
What’s the benefit of changing the ignition. In addition, are there any good websites that show how to do this? About how much does it cost to do something like this?

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Gas Mileage 27 Jul 2006 18:43 #65311

steell Offline User Posts: 6850 Thank you received: 207	It's only about a half hour job to install it, just use the KZ440 wiring diagram on www.kz400.com to see how to wire the ignitor. I'm working on my third conversion If you can't find an ignitor, loudhvx has a page on building your own using an HEI module from a GM car and three other componets. Costs less than $20 to build it. KD9JUR
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Gas Mileage 27 Jul 2006 18:50 #65313

Biquetoast
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King Jeremy The Wicked
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steell wrote:

Sheesh, I hammer on them and waste a lot of gas and the worst I get is 45 mpg, with 55 mpg being normal

Sounds like it's time for a complete tune up, including adjusting the valve clearances.

Just for the sake of corroboration, the worst I get is 44, and my average is around 48mpg. My entire commute is city and urban though, no highway.

This sounds just like that other dude a few days ago. He ended up having a bad plug wire or cap or something, right? Pretty much running on one cyl?

(1.) '75/'76 KZ400D - Commuter
(2.) '78 KZ750B3 Twin - Commuter
(3.) '78 KZ750B3 Twin - Commuter
(4.) '75 KZ400D - Sold
kz750twins.com

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Gas Mileage 27 Jul 2006 21:24 #65369

agawam Offline User Posts: 327 Thank you received: 1	my twin is a shop project so far but I didn't estimate my milage before, just put in gas when it needed it, I have a 74 H1500 that gets about 22mpg but thats a "crank me up" bike Post edited by: agawam, at: 2006/07/28 00:33 Attachments:
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Gas Mileage 28 Jul 2006 08:13 #65413

BARNEYHYPHEN Offline User Posts: 419 Thank you received: 1	1976 Kz900 bored out to 1024cc, 26's with 135 needle jets, Dyna and WG coil relay rewire. Ride fairly hard. 39.6 mpg.
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Gas Mileage 29 Jul 2006 10:51 #65665

79KZ Offline User Posts: 1 Thank you received: 0	I must have some problems . I will give the bike a good tune up next weekend. Hopefully that will improve my gas mileage.
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Gas Mileage 29 Jul 2006 20:16 #65783

arobsum Offline User Posts: 566 Thank you received: 10	my 1977 kz1000 with vm28's and dyna ignition gets 35-38 mpg. usually around 35.
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