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Premium Fuel?
- blue75kz900
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So the compression ratio is stock at 8.5 to 1. Shouldn't it just be regluar fuel?
Pro, cons either way?
Thanks.
Blue 1975 KZ900
Gold 1970 Chevy Nova 427...Bike killer
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- Kawickrice
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- After Monday & Tuesday, even the calendar says WTF
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Science might say I am wrong but i have ran premium in my bikes for a long time and never had a fuel related issue.
Try running a tank or two of each and see if you can tell the difference. I would be interested in members thoughts also
What happened to the Amoco White gasoline. Do they still manufacture it or is it part of the BP stable now? That was good gas back in the day
73 Kawasaki Z1
07 HD CVO Ultra Classic
82 Suzuki GS 1100
74 Yamaha RD 350 (My two stroke toy)
77 Kawasaki KZ 650B-1 (My putt around bike)
80 Indian Moped (My American Iron)
1
Long Gone
75 Suzuki GT550
74 GT 380
79 RD 400 Daytona Special
72 Honda CL 175
74 Honda QA 50
Tampa FL
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- bountyhunter
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1979 KZ-750 Twin
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- otakar
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Unless it pings on regular, no reason to run premium.
+1
I have always run nothing but regular gas in all of my stock KZs with the exception of my KZ1300 which requires premium or at minimum mid grade since the 9.3:1 compression. On very hot days you might be able to see better results with higher octane gas. The easiest way to tell if the bike will run better on higher octane gas is to go to the hardware store and buy a quart of Xylene (Xylol) Take it with you on a little trip with a full tank of gas. see how the bike runs on that tank of regular for about a half hour or so. Than dump the quart of Xylene in the tank and see how the bike runs with the Xylene. Xylene has an octane rating of 117 and will change your fuel octane enough to affect the performance if the engine indeed requires the higher octane. Xylene is used in most European countries to boost octane the same way we use Ethanol here in the US. Xylene has the benefit of not reducing your fuel energy density which Ethanol will do. when adding Ethanol to raise Octane the engine will go lean. While adding Xylene it will not. This is just a quick way to test if your engine requires higher octane. For My Built GPz1150 I buy Xylene in 5 gallon buckets and mix it with my premium gas. For reference, Ethanol has an Octane rating of 101 and MTBE which used to be used here in the US before Ethanol had a rating of 118.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- 9am53
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- homebrew, and some bbq
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'84 GPz900r
'71 CB350
s289.photobucket.com/albums/ll231/9am53/
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- DoubleDub
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- Kawickrice
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- After Monday & Tuesday, even the calendar says WTF
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I know someone who swore that mothballs would increase octane if you crushed them up and put into the gas any truth to this?
73 Kawasaki Z1
07 HD CVO Ultra Classic
82 Suzuki GS 1100
74 Yamaha RD 350 (My two stroke toy)
77 Kawasaki KZ 650B-1 (My putt around bike)
80 Indian Moped (My American Iron)
1
Long Gone
75 Suzuki GT550
74 GT 380
79 RD 400 Daytona Special
72 Honda CL 175
74 Honda QA 50
Tampa FL
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- DoubleDub
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Here in the Chicago area that would not be the case. Since today MANY car engines require Premium fuel
Up here, eveyone is cheap. Even others that I know with cars that require 91 octane still pump 87/89 to save a few cents.
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- Old Man Rock
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BTW... Otto, hope your garage never catches fire.... Holy crap with all the chemicals you had on your shelf....
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- ed spangler
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- Tennessee Z
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Yeah it costs .03 a gallon more .
Runs MUCH better on plain regular 100% gas!
ED
Have 1975 Kawasaki Z1-B & 2003 Harley Davidson Heritage Softail Classic
Had Hondas, Harleys and many ,many Z Series Kaws both Std. & LTD's
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