Recent content by SilverSurfer

I emailed QuickTrip about the ethanol based 91 octane (QT is serving me the E0 91. They stated: "The 91 octane that we offer in your city is a blend of 89 octane and ethanol. The ethanol brings the grade to an octane level of 91." So this equates to 92% gasoline and 8% ethanol.

Are you going to re-jet the carb? Adding oil will cause the engine to run lean since a carb meters by volume and the oil is displacing the fuel.

Originally Posted By: A_Harman Originally Posted By: SilverSurfer I think that graph might need to be adjusted just a little bit. How is detonation going to occur if the cylinder pressure is decreasing as indicated in the graph? I suppose heat could be increasing due to burning gasoline, but...

Originally Posted By: UrS4 Ok guys. first I have to point out that I'm not trying to offend anyone at all. If someone find this post offending then please excuse me. Also English is my 2nd language so please bear with me. Why is so many so focussed on the "two flame fronts colliding" theory...

From a motorcycle mailing list I am on.... ........... It looks like the original article was in the April/May 2007 issue of Machinists Workshop. Quote: Machinist's Workshop magazine actually tested penetrants for break out torque on rusted nuts. Significant results! They are below, as...

Originally Posted By: kschachn Also just to be precise, the octane rating of a fuel that is posted at the pump is an average of a motor (M) and research (R) ratings, not just the motor rating I described. I believe the average is called the "anti-knock index" or AKI. You probably already know...

Originally Posted By: kschachn It's a standard ASTM test (D2700?) which at the time used a standardized single-cylinder engine. I did it as part of a fuels & lubricants class I took in college. If you Google around enough you will probably find descriptions of the ASTM test. As far as flame...

Originally Posted By: kschachn In terms of "bang for your buck" as you put it, there will be no difference between any gasoline with identical octane ratings. As you probably already know, the test (which I have done) is what determines the rating, so it is agnostic to the composition (bang...

Originally Posted By: MNgopher 87 octane E10 is a blend of 84/85 octane gas plus ethanol resulting in 87 octane. Not a lot of changes needed to make a lower octane gas at the refining level. Thank you. Any idea what E10 91 octane starts as?

Originally Posted By: 901Memphis You can always get race gas fuel additive if you want more octane. http://race-gas.com/ Yes I have seen that, and it seems legit. One of the vehicles is my daily driver, so I don't want to get some radical tune that requires me to bring race-gas additive with...

Originally Posted By: bigt61 Remember, that octane is an explosion inhibitor - lower octane is more volatile and has higher energy content (BTU). High octane is needed in high performance engines so they can squeeze the air-fuel tighter(high compression) for a bigger bang which equals more...

Originally Posted By: Benzadmiral Originally Posted By: SilverSurfer Hello all. First post on BITOG! Anyway, I am curious how gasoline is blended with ethanol. If I buy E5 or E10 pump gas that is rated at 91...is that 91 octane that was mixed with ethanol (114 octane equivalent), to produce...

Hello all. First post on BITOG! Anyway, I am curious how gasoline is blended with ethanol. If I buy E5 or E10 pump gas that is rated at 91...is that 91 octane that was mixed with ethanol (114 octane equivalent), to produce something higher than 91? Or is it a lower octane gas blended with...