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100 octane

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Old 12-15-2014, 06:34 PM
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Default 100 octane

So at work I have access to 100 octane low lead fuel. I was wondering if I can run this fuel and what effects it might have. Thanks for any input.
 
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Old 12-15-2014, 07:19 PM
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If you have cats, it will kill them.

Unless the compression has been raised to at least 12 to 1 there will not be any power improvement.

Leaded gas will foul the plugs, heads, injectors, valves and guides much quicker.

Octane is not power. It is the resistance to ignition and that is all.

The engine tune, compression, timing and cams would need to be spec'd for benefiting from 100 octane gas.

Not to mention that CARB can fine you $10,000 for using in on their highway's you evil polluter. For that reason I suggest that you not post such business on a public forum. Dumb is what dumb does.
 

Last edited by lh4x4; 12-15-2014 at 07:25 PM.
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Old 12-15-2014, 07:31 PM
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I use 93 octane Non Ethanol, Just right.
 
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Old 12-15-2014, 07:33 PM
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I use premium fuel, even if it is E10, spiked with Star Tron (the blue stuff)
 
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Old 12-15-2014, 07:40 PM
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Well knowing what your bike is and setup would greatly help but I would say it won't help. My bike is an 08 and recommends 91 from Harley. I usually run 93 and runs great.
 
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Old 12-15-2014, 07:44 PM
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It's leaded. That should pretty much explain it.
 
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Old 12-15-2014, 08:34 PM
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Originally Posted by Adub90
So at work I have access to 100 octane low lead fuel. I was wondering if I can run this fuel and what effects it might have. Thanks for any input.
I'm going to to take a guess and say that you work around aircraft.
If so, take it from someone with over 30 years in aviation. Don't run it unless you want to replace some valve seals. I've had more then one bike start to smoke from running 100LL.
 
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Old 12-16-2014, 08:37 AM
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Here in the UK we went to unleaded fuels later than you chaps did in the USA. Engines built for leaded fuels risked valve and seat damage when using unleaded, but not the other way around - it is a subject I researched at the time.

In those good ole leaded days we had access to fuels here with up to 105 octane and I can confirm that even in a moderately tuned engine they worked darned well! Don't need any engine changes to get a performance boost, although a tuned engine would undoubtedly gain even more.

Over here the taxes paid on fuels for road-going vehicles are much higher than for aircraft fuels, so using any on the road will attract attention and some serious trouble, if caught! So while it is unlikely IMHO that using leaded fuel will have any adverse affects in that regard, there are other good reasons for not using the stuff.
 
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Old 12-16-2014, 10:55 AM
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Originally Posted by lh4x4
If you have cats, it will kill them.

Unless the compression has been raised to at least 12 to 1 there will not be any power improvement.

Leaded gas will foul the plugs, heads, injectors, valves and guides much quicker.

Octane is not power. It is the resistance to ignition and that is all.

The engine tune, compression, timing and cams would need to be spec'd for benefiting from 100 octane gas.

Not to mention that CARB can fine you $10,000 for using in on their highway's you evil polluter. For that reason I suggest that you not post such business on a public forum. Dumb is what dumb does.
I agree completely. You hit the nail on the head with your "Octane is not power". Well said.
 
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Old 12-16-2014, 05:41 PM
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Any Leaded fuel is better than any alcohol blend we have today and who is going to know what fuel you have in your tank unless you advertise it. At least you are not burning up our food. You tree hugging, global warming loons need to clean out your litter box.
 


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