Using 110 octane in an hhr?
06-13-2009, 12:46 AM
#1
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Thread Starter
Join Date: 04-19-2009
Location: Green Bay
Posts: 385
Using 110 octane in an hhr?
So I guy at work told me that there is a gas station in GB that has racing fuel, 110 octane. I guess it is about $5 a gallon, so I would not use it cuz of the price. But we were trying to figure out if it could be used in any engine. Does anyone know? Would there be a heat problem. Just kinda curious
06-13-2009, 04:31 PM
#3
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Join Date: 03-07-2008
Location: Essex, Maryland
Posts: 361
You would actually find your HHR ran worse on it......
Higher octane fuel is used in performance engines to allow for higher compression ratios. The fact is in a low/lower compression engine it produce less power. The higher the octane the slower the fuel burns at a given compression ratio. The advantage of that is you can run a higher compression without "pinging".
Pinging is actually the piston or cylinder wall ringing when the fuel/air mixture "explodes" instead of burning at a controlled rate. Pinging can also be caused by carbon build up in the cylinders. The carbon get hot enough to ignite the incoming fuel before the cylinder has reached the proper compression, allowing the fuel again to "explode" instead of a controlled burn.
So to answer your question coupld you run 110 octane fuel.... maybe but as the ECM cannot correct for that high an octane you would actually lose power not gain it...... and since it would most likely still be burning when the exhaust valve opened you could overheat the exhaust manifold and damage the convertor.
Just my $0.02 for what its worth
Higher octane fuel is used in performance engines to allow for higher compression ratios. The fact is in a low/lower compression engine it produce less power. The higher the octane the slower the fuel burns at a given compression ratio. The advantage of that is you can run a higher compression without "pinging".
Pinging is actually the piston or cylinder wall ringing when the fuel/air mixture "explodes" instead of burning at a controlled rate. Pinging can also be caused by carbon build up in the cylinders. The carbon get hot enough to ignite the incoming fuel before the cylinder has reached the proper compression, allowing the fuel again to "explode" instead of a controlled burn.
So to answer your question coupld you run 110 octane fuel.... maybe but as the ECM cannot correct for that high an octane you would actually lose power not gain it...... and since it would most likely still be burning when the exhaust valve opened you could overheat the exhaust manifold and damage the convertor.
Just my $0.02 for what its worth
06-14-2009, 02:51 AM
#5
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Join Date: 07-06-2008
Location: Roselle, IL
Posts: 156
110 is also usually leaded racing fuel. We had 100 here, and it is unleaded and is nose candy!!! It is REALLY SWEET when burned. Haven't tried it, but it probably is a waste if you aren't tuned specifically for it.
06-14-2009, 07:14 AM
#8
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Join Date: 07-05-2008
Location: Akron Ohio
Posts: 5,464
Yes the lead will wipe out the converter and o2 sensors.
06-14-2009, 10:18 AM
#9
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Join Date: 11-27-2007
Location: Austin, Texas
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This is an old test in Hot Rod, but reveals some "interesting" results. Jump to the last paragraph if you don't want to read the whole thing. http://www.hotrod.com/techarticles/f...son/index.html
06-14-2009, 09:08 PM
#10
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Join Date: 11-15-2008
Location: Newburgh, NY
Posts: 1,599
Are we talking about 100LL Avgas "blue" (also used in race cars) or 100/130 green? 100LL (low lead) contains about 2 grams of lead per gal and 100/130 contains about 4 grams per gal.
We used to burn 100LL in an old Dodge D500 bucket truck we had at an airport and the thing ran smooth as silk on it, but then again, the engine was a 1965 440, not a modern LNF 2.0.
We used to burn 100LL in an old Dodge D500 bucket truck we had at an airport and the thing ran smooth as silk on it, but then again, the engine was a 1965 440, not a modern LNF 2.0.