Hi-test?

squire · 05-20-2008, 08:40 AM

What grade fuel are you using? 87, 89, or 91 octane?

J-Rod · 05-20-2008, 08:53 AM

87 octane and i was told by lifetime bikers to put a cap full of marvel mystery oil in every tank??

Just what I heard

Jared

red2003 · 05-20-2008, 09:03 AM

87

katoranger · 05-20-2008, 10:01 AM

87 too. The marvel oil won't hurt anything, but it is not necessary. I do use it in my tractors since they are old and stubborn and I don't use them everyday.

Allen

liverchip · 05-20-2008, 03:22 PM

87 here as well.

IronFist · 05-20-2008, 03:27 PM

I use the top grade, I don't know why?
Maybe I shouldn't?

fatboy250 · 05-20-2008, 03:39 PM

I guess that's fine if you want retarded timing.

It essentially retards your timing if you have pre-ignition issues like knocking....Seriously...It's really for higher compression ratios than what we have. The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites. When gas ignites by compression rather than because of the spark from the spark plug, it causes knocking in the engine. Lower-octane gas (like "regular" 87-octane gasoline) can handle the least amount of compression before igniting.

kevj46774 · 05-20-2008, 04:14 PM

I have a 07 Lifan gy-5 pushrod engine. Owners manual says 93 octane or higher. I use the highest I can find. I used 87 octane once and noticed that when its hot it would ping at low rpms when I accelerated.

katoranger · 05-20-2008, 04:14 PM

Quote:

Originally Posted by IronFist

I use the top grade, I don't know why?
Maybe I shouldn't?

Try some regular in there. If it runs fine then you will know not to waste your money.

My GPZ550 like mid grade or higher. It would knock on regular.

Allen

IronFist · 05-20-2008, 04:20 PM

Thanks brother :roll:

elroyjetsn · 05-20-2008, 09:25 PM

Mine seemed to knock pretty bad above 6k during acceleration with 87, so started using premium and she seems happier.

I think the Viva engine has 10.1/1 compression ration for some reason.

Ever hear a 1 cylinder diesel?

yurkia · 05-20-2008, 10:25 PM

I use 91 in mine, but just because its the same price as 87. hehe

IronFist · 05-20-2008, 11:23 PM

I don't mind spending extra on gas or oil for my bike. With what the wife spends on the dogs 8O , I figure I can spoil my horse a little.

DesertDog · 05-21-2008, 12:10 AM

......turn-a-bout is fair play..........

i buy regular for my dirt bikes and atv's and put in 1 cap full of high octane boost in a tank of gas and there is a difference

ImEazy · 05-21-2008, 01:43 AM

My take on this subject...

I use the cheapest I can buy. My reasoning. These bikes are being used in
a bunch of third world countries. I am sure they are not getting the quality
of fuel that we get here in the the states ( I know they didn't in Italy when I
lived there 90-93) and they run fine. So why pay more for fuel when I can
use the money for other things. I have not had any problems with my GY
since I bought it almost three years ago.

I do run high-grade in my MZ though as it is a completely different machine.

05-20-2008, 08:40 AM	#1
squire Join Date: Jan 2008 Location: central Arkansas Posts: 79	Hi-test? What grade fuel are you using? 87, 89, or 91 octane? __________________ Squire, http://lifanlf200gy-5.blogspot.com/ http://1948model.blogspot.com/
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05-20-2008, 09:03 AM	#3
red2003 Join Date: Jan 2007 Location: Northern Vermont, USA Posts: 1,271	87 __________________ First Chinabike: 2006 Roketa RSX200E Current Chinabikes: 2023 Titan DLX & 2022 Lifan KP Mini w/ 210cc BRT kit, 22 RWHP!
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05-20-2008, 10:01 AM	#4
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	87 too. The marvel oil won't hurt anything, but it is not necessary. I do use it in my tractors since they are old and stubborn and I don't use them everyday. Allen __________________ You meet the nicest people on a Honda Clone.
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05-20-2008, 03:22 PM	#5
liverchip Join Date: Nov 2006 Location: Mystery Spot Posts: 1,223	87 here as well. __________________ 2009 XR650L Big Red Pig Tusk bar risers 2007 X-Moto(Jetmoto) GY250 --mods--- 15/40 sprockets UNI Pod Filter 2007 Shineray TMS 200XYi--Betsy Betsy Mods:______________________ Acerbis DHH headlight FMF Powercore pipe Uni Pod Filter
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05-20-2008, 03:27 PM	#6
IronFist Join Date: Apr 2007 Location: Toronto Ontario Canada Posts: 2,585	I use the top grade, I don't know why? Maybe I shouldn't? __________________ IronFist ___________________________________ The "chain" of command is used for beating spammers. ___________________________________
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05-20-2008, 08:53 AM	#2
J-Rod Join Date: May 2008 Posts: 22	87 octane and i was told by lifetime bikers to put a cap full of marvel mystery oil in every tank?? Just what I heard Jared
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05-20-2008, 03:39 PM	#7
fatboy250 Join Date: Sep 2006 Location: COLUMBIA, SC Posts: 973	I guess that's fine if you want retarded timing. It essentially retards your timing if you have pre-ignition issues like knocking....Seriously...It's really for higher compression ratios than what we have. The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites. When gas ignites by compression rather than because of the spark from the spark plug, it causes knocking in the engine. Lower-octane gas (like "regular" 87-octane gasoline) can handle the least amount of compression before igniting. __________________ 2008 Jonway MC-70-150 2007 Roketa DB-07B (RSM-200E) 2006 Roketa DB-07A (RSX-200E) 1995 Kawasaki Concours (ZG1000)
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05-20-2008, 04:14 PM	#8
kevj46774 Join Date: May 2008 Location: Fort Wayne IN Posts: 11	I have a 07 Lifan gy-5 pushrod engine. Owners manual says 93 octane or higher. I use the highest I can find. I used 87 octane once and noticed that when its hot it would ping at low rpms when I accelerated.
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05-20-2008, 04:20 PM	#10
IronFist Join Date: Apr 2007 Location: Toronto Ontario Canada Posts: 2,585	Thanks brother :roll: __________________ IronFist ___________________________________ The "chain" of command is used for beating spammers. ___________________________________
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05-20-2008, 09:25 PM	#11
elroyjetsn Join Date: Mar 2008 Location: West Virginia Posts: 629	Mine seemed to knock pretty bad above 6k during acceleration with 87, so started using premium and she seems happier. I think the Viva engine has 10.1/1 compression ration for some reason. Ever hear a 1 cylinder diesel? __________________ Wayne Wildfire WF300-SP
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05-20-2008, 10:25 PM	#12
yurkia Join Date: May 2008 Location: New Franklin, Missouri Posts: 243	I use 91 in mine, but just because its the same price as 87. hehe
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05-20-2008, 11:23 PM	#13
IronFist Join Date: Apr 2007 Location: Toronto Ontario Canada Posts: 2,585	I don't mind spending extra on gas or oil for my bike. With what the wife spends on the dogs 8O , I figure I can spoil my horse a little. __________________ IronFist ___________________________________ The "chain" of command is used for beating spammers. ___________________________________
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05-21-2008, 12:10 AM	#14
DesertDog Join Date: Apr 2008 Posts: 782	......turn-a-bout is fair play.......... i buy regular for my dirt bikes and atv's and put in 1 cap full of high octane boost in a tank of gas and there is a difference __________________ DesertDog
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05-21-2008, 01:43 AM	#15
ImEazy Join Date: Jun 2006 Location: N.E. Ohio (Near Akron) Posts: 599	My take on this subject... I use the cheapest I can buy. My reasoning. These bikes are being used in a bunch of third world countries. I am sure they are not getting the quality of fuel that we get here in the the states ( I know they didn't in Italy when I lived there 90-93) and they run fine. So why pay more for fuel when I can use the money for other things. I have not had any problems with my GY since I bought it almost three years ago. I do run high-grade in my MZ though as it is a completely different machine. __________________ 2000 MZ Baghira
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