avgas vs race fuel

0000001452 00000 n The lower the atmospheric pressure, the more easily fuel … 0000003603 00000 n for the AV gas vs. $5/gal for race fuel. <]/Prev 205194>> 0000001016 00000 n 0000009686 00000 n An engine with the timing retarded tends to run hotter. Be aware that this topic gets technical very quickly and I will get up on my soap box. 0000111084 00000 n 0000084031 00000 n 0000000016 00000 n While AvGas' higher octane is useful, smaller-bore, shorter-stroke, high RPM engines will perform better on racing fuel or high quality octane boosters. trailer Avgas is very high in lead content, not something that is good for the two stroke motors. Can anyone tell me why aviation fuel would not be a good idea to run? The main concern when storing fuels is oxidation and subsequent formation of gum. 0 Until very recently they ran 100% methanol. In order to understand the specific differences of thesefuels, we need to first discuss the two main types of fuel. The other thing is that av gas is very clean burning. The 112 octane version of Rockett Brand TM Racing Fuels tests at 160 on the AvGas Scale. It’s been many decades since lead began to be phased out of pump gas. Once the fuel starts to form gum, it can cause problems in the entire fuel system. And they both stink to high heaven...Whewwww!My first job was pumping avgas at a small airport in GA. 1967 Falcon 4 door 351C - 70 Mustang 351C. The stickers on the tanks have holes in them so the evaporated components wont build under it. Compression fuels,for the purposes of this discussion are those that require highly compressedfuel air mixtures in order to burn properly, and ignition fuels are thos… On race day with a street legal vehicle, I fill up as usual but use a little more avgas and fill two or three five gallon gas cans for at the race. There areeffectively two different types of fuel in use in combustion engines, “compression fuels” and “ignition fuels”. 0000084298 00000 n Nitro propane is a great additive for pump gas. Its elct fuel inj, and has map sensors, Race gas will mutilate a O2 sensor. I was paying about $2.50/gal. 0000042457 00000 n For a better experience, please enable JavaScript in your browser before proceeding. h�b``P```y��%*`b�� ̴�2X=�X^�A�q�B��}��"�t�kn1�g,j�ɩ��Qr�M�OL��?�&:220q��lfe|��i��2�`1Fl�� *�� Make sure we stick with specific type of fuel or products as opposed to nebulous terms like AVGAS and Race Gas. Only oxygentated race fuels make more power. On the racing circuits that I follow and attend (Indy and CART), race fuel is now 100% ethanol or 90/10 ethanol/methanol. In the diesel family we have things like Highway Diesel and the various grades of home heating oil. 0000001508 00000 n Very true. A few specialty fuel companies still produce 115/145 at a slightly higher price for use by air racers and other unusual applications. Understandably, we get a fair amount of questions about lead and why it’s used in some racing fuels. startxref 0000045324 00000 n A separate issue is the hydrocarbon composition of 100LL vs. pump gas vs. racing gas. Run with 114-octane Rockett race fuel, the supercharged 383 produced 643 hp and 589 lb-ft of torque at 11.4 psi. The higher the number, the more resistance it has. A 10-percent mixture of turbine fuel and 90-percent 82-octane avgas can lower the octane of the gasoline over two-octane numbers. With all that said, Race Fuel or alcohol makes the most technical sense in a Banshee. As I alluded to in my comment to klxd, there are considerations to be made. 0000002681 00000 n 0000042955 00000 n AV gas usually wont.AV gas has a lower lead content than race fuel, but more than Pump Gas!! It does NOT contain any more BTU's than pump fuel and contains usually less BTU'S that race gas depending on the type of race fuel. avgas chemically retardes the timing a small amount. It is often used as race fuel by people trying to save money, but to get that last bit of power, race fuel (when stored properly) is indeed better for racing. Storage tanks for gas pumps are vented, so the race fuel purchased from a gas pump will not be as fresh as what you get out of a sealed container. av-gas vs race fuel. i know fuel pretty well, have 2 chemist in the family. Joined: Sep 24, 2006 Messages: 9,383 Likes Received: 7,310 Location: The longbar PNW. ERC Max ULC Racing Fuel . mabey you shoud ask the admins to make this in to an article for FM. I have heard negative things about this fuel but it … Avgas is distinguished from conventional gasoline (petrol) used in motor vehicles, which is termed mogas (motor gasoline) in an aviation context. The amount of lead in 100LL Avgas is very minimal compared to leaded modern race gas. 0000111530 00000 n Most racers today don’t know what it was like to “fill ‘er up” with leaded pump gas. The racer must compensate for this by changing to richer (larger) jets in the carburetor when changing from racing gasoline to avgas. 0000045901 00000 n confused by the big numbers from the AvGas test method. AVGAS vs. Race Fuel vs Pump Gas I have heard a lot of talk lately about avgas recently and want to caution against the use of this fuel in RS250's. Aviation gas really isn't apples-to-apples when compared to race gas. Race Fuel 101: Lead and Leaded Racing Fuels. 0000009766 00000 n In drag racing they commonly use nitromethane in the top fuel … AvGas has lower volatility so when used in proportions higher than about 40%, part-throttle drivability and cold starts may be compromised. 0000154673 00000 n Av gas has a slightly slower burn rate compared to race fuel or pump gas. Many people think high … ��rY�/�.��|YL�� (�PI��H3��$$A�. Vapor pressure for avgas, he explains, often falls between just 5.5 and 7.1 psi; depending on the season and location, typical pump fuel for passenger cars can range from 5 to 15 psi. endstream endobj 9 0 obj <>>>/Metadata 6 0 R/OpenAction 10 0 R/Outlines 3 0 R/Pages 5 0 R/Type/Catalog/ViewerPreferences<>>> endobj 10 0 obj <> endobj 11 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/Properties<>>>/XObject<>>>/Rotate 0/Thumb 4 0 R/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 12 0 obj <> endobj 13 0 obj <> endobj 14 0 obj <> endobj 15 0 obj <> endobj 16 0 obj [/ICCBased 19 0 R] endobj 17 0 obj <>stream %PDF-1.7 %�� 3.) 0000002161 00000 n They are not comparable to motor gasoline test numbers. 100LL is around .5-.55 grams/liter on lead content, which is comparable to the 2.12 grams/gallon that was considered the typical 1960's standard for pump fuel. Jetted correctly you should not experience a lean burn at WOT. 2.) 0000110811 00000 n 0000136452 00000 n Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! %%EOF A forum community dedicated to Ford performance owners and enthusiasts. 0000041753 00000 n Race gas must also be stored in a closed METAL container,not plastic. af2 HotPass Posts: 6711 First, there is a large margin of safety in the one-year storage life of avgas. There were a few guys around here in the 1970's that always talked about the advantages of AV Gas. 0000006605 00000 n 0000084835 00000 n I've been told that avgas has no place in a race engine but why? Pump Gas Versus Race GasOctane rating is defined as the resistance to detonation a fuel has in an internal-combustion engine. I like Sunoco 110 racing fuel and other guys in my class are running aviation 100LL. Page 2 of 3 < Prev 1 2 3 Next > windthrown 361 Junkie. A highly leaded race fuel does allow you to build a more radical engine, which makes more power, but that power doesn't come from the fuel. Some racing gasoline blenders use AvGas … They are available for all race fuels and 100LL. One strategy for evaluating different hydrocarbon compositions is to examine the distillation curves of various fuels. The components will evaporate and pass thru plastic containers. Engine Power has used Race Gas fuel concentrate in their builds for years because it works! 0000137210 00000 n Before each pass, I top up to the minimum allowed fuel level with the avgas from the cans. Instead of weighing about 6.1 to 6.3 pounds per gallon like racing gasoline, it weighs 5.8 to 5.9 pounds per gallon. Storage tanks that are above ground are REALLY bad, as the warmer fuel evaporates much more quickly than fuel stored underground. Av gas ,yeah, I run it at the track, and is clearly .4 seconds faster. 8 36 It depends on whether or not you are comparing an oxygenated race gas, like U4.2, or an non-oxygentated race gas like C12. 43 0 obj <>stream Discussion in 'Chainsaw' started by nmurph, Jan 20, 2009. ERC Max ULC Racing Gasoline’s are completely unleaded high density (specific gravity) racing gasoline’s specifically designed to work in heavily supercharged or turbocharged race engines and/or in normally aspirated, high compression engines where high fuel mileage with unleaded fuels is desirable and long periods at WOT (Wide Open Throttle) are … I would not use AV Gas as a cleaner. The amount of TEL (2 grams/gallon) and other hydrocarbons makes it extremely carcinogenic. 0000009617 00000 n Unlike motor gasoline, which has been formulated since the 1970s to allow the use of … Many people who use race gas in dirt bikes{motocross} know this. xref 0000006744 00000 n H��W[o�~7��G��(�H�A �3Y�@f��lӱv%�#�ɸ��琔D��:G�s�~��[��[ry7��L~L.��䩙p��q Avgas is less dense than most racing gasolines. 0000001266 00000 n Top. Av gas also has a slower burn rate than race fuels or gasoline and there for tends to chemically retard your timing slightly helping to keep deto at bay. Av-Gas is brewed to NOT evaporate easily. The other major difference is octane quality. 0000009506 00000 n For other purposes (like heating) we basically light the stuff on fire and are happy it burns. Shelf life is NOT better. 0000003638 00000 n Presently, the most common avgas is 100LL which is 100 octane low lead. JavaScript is disabled. This is also the reason why if you spray paint a plastic gas tank,or jug, the paint will not stay very long. 0000042432 00000 n Zachary J. Santner, technical specialist at Sunoco Race Fuels, notes that avgas can be more refined and consistent than the fuel found at the corner store. | There's only two fuels you should be interested in running, which are 100LL and 115/145. 8 0 obj <> endobj 0000136733 00000 n AvGas is held to tighter requirements than street gasoline, but not nearly as tight as is the entire line of Rockett Brand TM Racing Fuels. Avgas (aviation gasoline, also known as aviation spirit in the UK) is an aviation fuel used in aircraft with spark-ignited internal combustion engines. By the early 1970s the avgas market had become so small that the major oil companies were finding it uneconomical to produce and market two separate avgas products. 0000001975 00000 n It isn't the same R+M/2 method of rating octane as our automotive gasoline. 0000045595 00000 n http://www.mustangworks.com/cgi-bin/moi-display.cgi?220, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. The fuel just keeps it alive. AvGas has a lower specific gravity so it will require a change in air-fuel ratio calibration for the … The octane of avgas is a minimum of 120. For transportation purposes these fuels are used in compression-ignition engines ("diesel engines"), where a high temperature and pressure will cause the fuel to ignite and burn, producing power. I know the vapour pressure on the avgas is 44 and the race fuel is 8. 0000042033 00000 n I have used AV gas many times in my 65 Porsche 356 Racecar (aircooled) with no impact on the engine or performance. Winning on today's racing circuit requires more than an exceptional driver and a well-built car. 0000009393 00000 n Same goes for all other racing gasolines. ��)eA@"��5�U9��[I�g5��r~�Ȫ!L�'ͪ�y�� ͋�(��4�I�B?JX��>�%�Y�+��d�n��ZQ��_l&,1�-� AV Gas is lighter than racing gasoline thus more fuel/larger jetting is required. It takes high-performance racing fuels that are willing to go the distance - fuels … 0000003104 00000 n

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