Fuel check question - Page 6

Mike Croley · 07-05-2012, 10:50 AM

As to not being able to purchase at the track , there are a lot of tracks like Island Dragway that would disagree with you .

Rusty Davenport · 07-05-2012, 12:04 PM

Ok help me get the final vote..........does nhra tech show favoritism or partiality towards passing vp fuel ???? Yes or no

69Cobra · 07-05-2012, 12:27 PM

Quote:

Originally Posted by Dave Turner

I'm using Aeromotive #15631 in the new car....

Thanks Dave

Jody Lang · 07-05-2012, 01:05 PM

Quote:

Originally Posted by LNorton

I've seen Sunoco, Rocket, Torco, and C12 all mixed in one jug pass as Sunoco Purple. Never personally had a problem myself either and I 50/50 mix pump gas and 110 when bracket racing. VP, Sunoco and Torco have all passed in my car when pours on top of whatever was in the cell.

Pump gas as in unleaded gas pumped from a gas station? Seems unbelievable that anything would pass with unleaded present.

Jody Lang · 07-05-2012, 01:11 PM

Quote:

Originally Posted by jmantle

Jody, I think this might be a div 7 thing. The year before last at Sonoma, the div 7 guy told me my fuel (C11) was "marginal" and he would let it go but don't come back with it next round. I took the jug down to fuel check and one of the div 6 guys was there and checked it, said it was ok. Just to be safe, I bought 5 gallons of fresh and used it the rest of the weekend.
Ran the rest of the season with what was left in the barrel, all div 6 races, and nobody complained.

It does seem odd. Fuel passing at Woodburn the week or two before then marginal or failing in a different Division with a different meter.

Dennis P Chapman · 07-05-2012, 01:41 PM

Quote:

Originally Posted by Jody Lang

Pump gas as in unleaded gas pumped from a gas station? Seems unbelievable that anything would pass with unleaded present.

Not pump gas but C10 unleaded passed

philip miles · 07-05-2012, 01:55 PM

My friend got me Sunoco GT100 fuel by mistake, it's unleaded. When I gave it to the NHRA tech, he asked me why I had unleaded fuel in my car. NHRA can tell that there is unleaded present, it shows a positive on the fuel meter. Needless to say, I had to drain the tank, put in fresh Sunoco purple to get past the fuel check. Boy, was I pissed at my friend. But because Sunoco came out of a pump marked Cam2 gas with no other markings, they ended up giving me $2500. for my troubles. It was like being runner up at the race.

Casey Miles
248H "F" NHRA Stock

Jim Parsons · 07-05-2012, 04:04 PM

One part of the process that you may be taking for granted is the test instrumentation and its calibration certification. When we speak of calibration its not the "zeroing" of the meter that is done periodically but actual verification using a certified standard, typically cyclohexane at a precise temperature using a certified thermocouple in a controlled environment.

Having sat on a FIA fuel and lubrication committee that developed test procedures for international Kart racing gas testing this process is critical for field test meters that get transported about. The dielectric field test meters used by NHRA are typically reliable but do need to be calibrated periodically both for accuracy and part of their test criteria. I'm not saying their meters were wrong just mentioning this as a possible discrepancy especially from one division to another.
The most accurate test method is a gas chromatographer which are very expensive and not so mobile and are seldom seen at race tracks.

FYI: From my personal experience with dielectric testing temperature accuracy is critical in the equation.

Jim

FED 387 · 07-05-2012, 04:45 PM

Jim --I think that what you are describing is beyond the scope of most if not all of the NHRA people that are probably technically challenged to do anything other than the rudimenntery type of fuel test-- by this I mean ask the brand of fuel ,insert the testing probe into the container and press the button/s and read the results, then compare the reading to the acceptable range allowed by NHRA for that brand ---it ends up being a GO -NO GO scenario pass/fail whatever--now that I think about it I never really have seen the tester cleanse the tester probe from one sample(racer) to the next-- have you??? This action alone might possibly comppromise the next fuel batch results because of trace samples left from the previous fuel especially if that next sample is o so close to being borderline to begin with

07-05-2012, 10:50 AM	#51
Mike Croley Member Join Date: Apr 2010 Posts: 182 Likes: 0 Liked 0 Times in 0 Posts	Re: Fuel check question As to not being able to purchase at the track , there are a lot of tracks like Island Dragway that would disagree with you .

07-05-2012, 12:04 PM	#52
Rusty Davenport Senior Member Join Date: Jun 2005 Location: Nashville N.C. Posts: 505 Likes: 4 Liked 100 Times in 26 Posts	Re: Fuel check question Ok help me get the final vote..........does nhra tech show favoritism or partiality towards passing vp fuel ???? Yes or no

07-05-2012, 01:55 PM	#57
philip miles Junior Member Join Date: Mar 2012 Posts: 43 Likes: 0 Liked 0 Times in 0 Posts	Re: Fuel check question My friend got me Sunoco GT100 fuel by mistake, it's unleaded. When I gave it to the NHRA tech, he asked me why I had unleaded fuel in my car. NHRA can tell that there is unleaded present, it shows a positive on the fuel meter. Needless to say, I had to drain the tank, put in fresh Sunoco purple to get past the fuel check. Boy, was I pissed at my friend. But because Sunoco came out of a pump marked Cam2 gas with no other markings, they ended up giving me $2500. for my troubles. It was like being runner up at the race. Casey Miles 248H "F" NHRA Stock

07-05-2012, 04:04 PM	#58
Jim Parsons Member Join Date: Feb 2002 Location: Kearney Mo Posts: 191 Likes: 348 Liked 131 Times in 25 Posts	Re: Fuel check question One part of the process that you may be taking for granted is the test instrumentation and its calibration certification. When we speak of calibration its not the "zeroing" of the meter that is done periodically but actual verification using a certified standard, typically cyclohexane at a precise temperature using a certified thermocouple in a controlled environment. Having sat on a FIA fuel and lubrication committee that developed test procedures for international Kart racing gas testing this process is critical for field test meters that get transported about. The dielectric field test meters used by NHRA are typically reliable but do need to be calibrated periodically both for accuracy and part of their test criteria. I'm not saying their meters were wrong just mentioning this as a possible discrepancy especially from one division to another. The most accurate test method is a gas chromatographer which are very expensive and not so mobile and are seldom seen at race tracks. FYI: From my personal experience with dielectric testing temperature accuracy is critical in the equation. Jim

07-05-2012, 04:45 PM	#59
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,354 Likes: 336 Liked 281 Times in 151 Posts	Re: Fuel check question Jim --I think that what you are describing is beyond the scope of most if not all of the NHRA people that are probably technically challenged to do anything other than the rudimenntery type of fuel test-- by this I mean ask the brand of fuel ,insert the testing probe into the container and press the button/s and read the results, then compare the reading to the acceptable range allowed by NHRA for that brand ---it ends up being a GO -NO GO scenario pass/fail whatever--now that I think about it I never really have seen the tester cleanse the tester probe from one sample(racer) to the next-- have you??? This action alone might possibly comppromise the next fuel batch results because of trace samples left from the previous fuel especially if that next sample is o so close to being borderline to begin with