2006 YFZ450?
Jan 4, 2005 | 10:36 PM
#31
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2006 YFZ450?
Originally posted by: blindside350
We run 91 octane straight up in the YFZ, just like all our quads. No pings knocks or nothing.
Originally posted by: D3athShad0w
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*Don't forget that sexy stock compression of 11.9:1 that we MUST "MUST" (MUST) run with a very high mix of race fuel and premium grade or just strictly race fuel (we wouldnt want to detonate her - premium fuel and octane booster wont cut it here kiddies o_O)!
.
*Don't forget that sexy stock compression of 11.9:1 that we MUST "MUST" (MUST) run with a very high mix of race fuel and premium grade or just strictly race fuel (we wouldnt want to detonate her - premium fuel and octane booster wont cut it here kiddies o_O)!
Jan 4, 2005 | 10:40 PM
#32
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2006 YFZ450?
Originally posted by: 13inc
So your saying YAMAHA doesn't have a clue as to what fuel they should be using?
So your saying YAMAHA doesn't have a clue as to what fuel they should be using?
Jan 5, 2005 | 02:15 AM
#35
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2006 YFZ450?
Originally posted by: YFZ450kid
the reason yamaha says to run 91 min is cuz not everyone lives near a track or near a gas station wit race fuel, I've found that the best places to get 100+ oct. race fuel is close to a lake or marina. 91 will work, but it does/can cause problems down the road...
Originally posted by: 13inc
So your saying YAMAHA doesn't have a clue as to what fuel they should be using?
So your saying YAMAHA doesn't have a clue as to what fuel they should be using?
Jan 5, 2005 | 06:55 AM
#36
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2006 YFZ450?
Originally posted by: YFZ450kid
the reason yamaha says to run 91 min is cuz not everyone lives near a track or near a gas station wit race fuel, I've found that the best places to get 100+ oct. race fuel is close to a lake or marina. 91 will work, but it does/can cause problems down the road...
Originally posted by: 13inc
So your saying YAMAHA doesn't have a clue as to what fuel they should be using?
So your saying YAMAHA doesn't have a clue as to what fuel they should be using?
Jan 5, 2005 | 10:34 AM
#37
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2006 YFZ450?
Originally posted by: PADZZ
I appreciate the octane lesson. Is there going to be any changes on the 2006? Thanks.
I appreciate the octane lesson. Is there going to be any changes on the 2006? Thanks.
The 06 YFZ is rumored to be a 10cc increase in engine size over the existing model. Some will start another argument saying it's just a rumor and Yamaha has said that for a couple years now. But I believe it to be true for 06 given the timing of the annoucement by Yamaha.
Other than that I haven't heard anything.
Buck
Jan 5, 2005 | 12:12 PM
#38
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2006 YFZ450?
Originally posted by: YFZ450kid
I tried that 91 stuff once, it misfired and pinged like all mad after the motor was a bit on the hot side at Dumont, I'd recomend atleast 98 oct. fuel...
Originally posted by: blindside350
We run 91 octane straight up in the YFZ, just like all our quads. No pings knocks or nothing.
Originally posted by: D3athShad0w
.
*Don't forget that sexy stock compression of 11.9:1 that we MUST "MUST" (MUST) run with a very high mix of race fuel and premium grade or just strictly race fuel (we wouldnt want to detonate her - premium fuel and octane booster wont cut it here kiddies o_O)!
.
*Don't forget that sexy stock compression of 11.9:1 that we MUST "MUST" (MUST) run with a very high mix of race fuel and premium grade or just strictly race fuel (we wouldnt want to detonate her - premium fuel and octane booster wont cut it here kiddies o_O)!
Sounds to me like you were incorrectly jetted, if you are slightly lean then upping the octane will make it run better.
Jan 5, 2005 | 12:32 PM
#39
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2006 YFZ450?
[quote]
[i]factory rich jetting above. q]
From what I have seen factory's jet them lean if anything, I never see them rich straight from the factory. Besides they want them leaner for EPA reasons.
[i]factory rich jetting above. q]
From what I have seen factory's jet them lean if anything, I never see them rich straight from the factory. Besides they want them leaner for EPA reasons.
