87, 89, 91, 92 Dyno performance
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
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From: river
Passing thought: Some shop could gain a bit of advertising every time their test results were referenced on a forum.
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
[QUOTEIn the 60's and 70's we built a lot of engines for the 1/8th mile.][/QUOTE]
interesting, I build for maximum power, 1/8 or 1/4. Maybe that’s a 60s and 70s thing. Fortunately, my building only consist of assembly, claying sometimes sanding valve pockets ect, the rest is in the hands of my Xl Performance company of choice.
interesting, I build for maximum power, 1/8 or 1/4. Maybe that’s a 60s and 70s thing. Fortunately, my building only consist of assembly, claying sometimes sanding valve pockets ect, the rest is in the hands of my Xl Performance company of choice.
Road Warrior
Joined: Jul 2013
Posts: 1,649
Likes: 443
From: Indianapolis
While this isn't on a Harley, it is on a bike.
It doesn't appear that any tuning for the higher octane was done, just different octane gas from the same station plus a "race" gas.
More Octane For More Power?
https://www.superstreetbike.com/more-octane-for-more-power-mythbusters
It doesn't appear that any tuning for the higher octane was done, just different octane gas from the same station plus a "race" gas.
More Octane For More Power?
https://www.superstreetbike.com/more-octane-for-more-power-mythbusters
Last edited by shanneba; Jul 17, 2018 at 08:49 AM.
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Cruiser
Joined: Jul 2016
Posts: 144
Likes: 17
From: Florida
While this isn't on a Harley, it is on a bike.
It doesn't appear that any tuning for the higher octane was done, just different octane gas from the same station plus a "race" gas.
More Octane For More Power?
https://www.superstreetbike.com/more-octane-for-more-power-mythbusters
It doesn't appear that any tuning for the higher octane was done, just different octane gas from the same station plus a "race" gas.
More Octane For More Power?
https://www.superstreetbike.com/more-octane-for-more-power-mythbusters
Great write-up!
I've saved the article for any future discussions.
Road Warrior
Joined: Jul 2013
Posts: 1,649
Likes: 443
From: Indianapolis
I see AAA did a report comparing premium and regular in cars-
https://newsroom.aaa.com/wp-content/...rt-FINAL-2.pdf
AAA test vehicles averaged 2.7% improvement in fuel economy.
The fuel economy improvements recorded during AAA testing do not offset the potential extra cost to purchase premium gasoline.
AAA test vehicles averaged an increase in horsepower of 1.4% across AAA’s tests.
Scroll down in the document, the regular tested at 88 R+M/2 the premium 92.6.
Both had 9.8% ethanol.
https://newsroom.aaa.com/wp-content/...rt-FINAL-2.pdf
AAA test vehicles averaged 2.7% improvement in fuel economy.
The fuel economy improvements recorded during AAA testing do not offset the potential extra cost to purchase premium gasoline.
AAA test vehicles averaged an increase in horsepower of 1.4% across AAA’s tests.
Scroll down in the document, the regular tested at 88 R+M/2 the premium 92.6.
Both had 9.8% ethanol.
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