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| Hinckley Classic Triples 885cc Classic Styled T3's: Legend, Thunderbird, Thunderbird Sport & Adventurer. |
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05-09-2008
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#11 (permalink)
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Senior Member
Formula Extreme Favorite Bike: '99 Triumph Legend "The Green Wonderbike"
Join Date: Sep 2005
Location: York, PA
Posts: 596
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Quote:
Originally Posted by cafetbird
Additives can be added - for a lot cheaper than the price of premium....
Of course, laziness to go and get the additives is priceless! 
If you can tell a difference between 87 and 89 octane on this bike at its compression level - something is wrong with your ride. |
Thanks for the input Professor Smartass!
I use an additive and the good stuff as well. |
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05-09-2008
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#12 (permalink)
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Lifetime Premium
Site Supporter
Moto Grand Prix Favorite Bike: Well, Duh!
Join Date: Jun 2002
Location: Vermont, USA
Posts: 3,062 Other Motorcycle: Can't afford two! Extra Motorcycle: Three would be insane
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running too high an octane is actually counter productive - it burns slower so produces less power and it also creates more deposits. Run the bike at the octane it was designed for - no more no less. Unless you increase the CR you don't need anything more than regular.
When your bike gets really old and coked up you might find you need mid grade to stop it pinking (pinging) - until then you are wasting money and losing power.
__________________
Mick...
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05-09-2008
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#13 (permalink)
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Member
Super Sidecars Favorite Bike: 2002 Thunderbird 900
Join Date: May 2007
Location: Wellesley, ON
Posts: 68
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Quote:
Originally Posted by MickMaguire
Run the bike at the octane it was designed for - no more no less.
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I guess this gets right at the heart of the question: what octane level was this engined designed to burn? On page 1.35 of the Triumph Service Manual it states the fuel type to use is U.S. 89 CLC/AKI where CLC is (RON + MON)/2.
Don't get me wrong, I would be happy to use regular gasoline (87 octane); but, I thought I read that the prevailing wisdom on this forum was to use what Triumph recommended.
Rick |
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05-10-2008
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#14 (permalink)
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Cafe Racin' Moderator
Site Supporter
SuperBike Favorite Bike: 1996 Triumph Thunderbird
Join Date: Jun 2003
Location: Greater Charlotte, NC (Fort Mill), USA
Posts: 1,632 Other Motorcycle: 2002 Triumph Sprint ST Extra Motorcycle: 1973 Triumph TR7RV
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Quote:
Originally Posted by MickMaguire
Run the bike at the octane it was designed for - no more no less. Unless you increase the CR you don't need anything more than regular.
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The owners manual does recommend 89 octane - mid grade fuel. So, per Mick's own advice that is what you should run.
Quote:
Originally Posted by BigAl8295
I use an additive and the good stuff as well.
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So, esentially you spend more money for premium for the additives, and then you spend even more money to add the additives again?!? Sounds logical....
Mick is correct - the bike will actually run more poorly on premium. If I am not mistaken, you can increase the heat range on your spark plugs to accomodate the cooler running fuel and eliminate the additional deposits.
Last edited by cafetbird : 05-10-2008 at 01:31 PM.
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05-10-2008
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#15 (permalink)
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Senior Member
World SuperBike Favorite Bike: Mutato -- 2K Adventurer
Join Date: Apr 2004
Location: Leander, Texas, USA
Posts: 2,462
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If the bike makes a noise like frying eggs when accelerating on a hot day then you need a higher octane fuel. Simple.
Jim
__________________
Note: This post may have been altered without the knowledge or consent of the author.
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05-10-2008
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#16 (permalink)
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Senior Member
Formula Extreme Favorite Bike: '99 Triumph Legend "The Green Wonderbike"
Join Date: Sep 2005
Location: York, PA
Posts: 596
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Quote:
Originally Posted by cafetbird
So, esentially you spend more money for premium for the additives, and then you spend even more money to add the additives again?!? Sounds logical....
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Different additives Professor! |
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05-11-2008
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#17 (permalink)
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Cafe Racin' Moderator
Site Supporter
SuperBike Favorite Bike: 1996 Triumph Thunderbird
Join Date: Jun 2003
Location: Greater Charlotte, NC (Fort Mill), USA
Posts: 1,632 Other Motorcycle: 2002 Triumph Sprint ST Extra Motorcycle: 1973 Triumph TR7RV
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Quote:
Originally Posted by jimmyj900
If the bike makes a noise like frying eggs when accelerating on a hot day then you need a higher octane fuel. Simple.
Jim
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LOL - abnormally terse for you Jim. I would have expected more of a discourse involving iso-octane and heptane levels, and their effect on pre-detonation. 
You can also tell if you are running the best mix when examining the condition of your plugs. If they show pitting on the electrodes, you may need to be running higher octane fuel.
Sounds like you have some kind of "special sauce" cooking there, Al! |
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05-11-2008
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#18 (permalink)
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Senior Member
World SuperBike Favorite Bike: Mutato -- 2K Adventurer
Join Date: Apr 2004
Location: Leander, Texas, USA
Posts: 2,462
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Quote:
Originally Posted by cafetbird
LOL - abnormally terse for you Jim. I would have expected more of a discourse involving iso-octane and heptane levels, and their effect on pre-detonation. |
Some things are actually simple... but they're few and far between.
Jim
__________________
Note: This post may have been altered without the knowledge or consent of the author.
Last edited by jimmyj900 : 05-11-2008 at 10:29 AM.
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05-11-2008
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#19 (permalink)
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Senior Member
World SuperBike Favorite Bike: Mutato -- 2K Adventurer
Join Date: Apr 2004
Location: Leander, Texas, USA
Posts: 2,462
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Quote:
Originally Posted by cafetbird
Sounds like you have some kind of "special sauce" cooking there, Al!
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If it involves nitromethane and/or hydrazine, count me in!
Jim
__________________
Note: This post may have been altered without the knowledge or consent of the author.
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05-11-2008
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#20 (permalink)
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New Member
Production 125
Join Date: Jul 2007
Posts: 7
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DONT KNOW HOW YOU AMERICANS CAN MOAN AT THE PRICE OF YOUR FUEL
WE IN THE UK ARE PAYING THE EQUIVALENT OF $10 A GALLON 
ITS NOW TRUE BEER IS CHEAPER THAN PETROL: |
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