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SteveM C/IL 
Orange Level Access
Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 7980
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 Posted: 21 Jun 2022 at 12:51pm |
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Setting in the grandstands at Top Fuel event is ridiculous (in a good way). I cant imagine being at the starting line.
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sho-man1
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Joined: 14 Sep 2009
Location: Wylie, TX
Points: 181
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Posted: 21 Jun 2022 at 9:10am |
https://www.hotcars.com/insane-facts-you-never-knew-about-top-fuel-dragsters/
If you ever get to attend an NHRA event, just set in the pits next to one of the teams and watch what they do between runs...Most impressive...especially when the rebuild is complete and they fire the engine up on gasoline for few seconds until the nitro-methane gets ignited...dang, earplugs and respirators help. BBRRUUMMP. Watching videos is never good enough to experience verses in person. My son works for a company that sponsored Brittney Force's top fuel dragster, I got to stand right behind that monster on the starting line during qualifying run. Nothing compares to that launch. Period.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 29483
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Posted: 21 Jun 2022 at 6:23am |
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TBH
These engines are configured quite different from other engines.
Yes dry sump but only 12 Qts on average. No cooling system as do not need where the massive flow of air and alcohol does act to cool them
Engine only has two rings, oil control and a compression changed every tear down which leads to oil itself.
Most use a basic 70 wt oil, clearances in the engine are not designed for longevity but duration of race. Oil becomes so alcohol diluted during a run it has to be discarded, as the injection system floods the cylinders with the fuel much of which gets past the rings.
They are far from economical as consume some four to five gallons of Nitromethane Methanol fuel for a quarter mile.
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3282
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Posted: 20 Jun 2022 at 10:18pm |
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being dry sump pans they my have a large oil tank to pump cooler oil
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 21463
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Posted: 20 Jun 2022 at 9:05pm |
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the cost of 30qts of new oil is NOTHING compared to destroying an engine using used oil that has 1 sliver of steel from a previous run....
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Lars(wi)
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Joined: 14 Sep 2009
Location: Permian Basin
Points: 6635
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Posted: 20 Jun 2022 at 8:58pm |
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More than likely some sort of synthetic. Way, way, more advanced than automotive motor oil. As for dumping after every race? I wouldn’t doubt it, with engine rebuild after every race, and the desire to squeeze every available hp from the engine, there may not be an oil cooler, very minimal oil pump, running at very high temps, etc. So fresh oil for the very run, is not unimaginable.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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AllisFreak MN
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Joined: 07 Dec 2009
Location: Minnesota
Points: 1499
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Posted: 20 Jun 2022 at 8:49pm |
I think Freebie dumps 30 quarts of beer every Saturday night - down his gullet. 
Edited by AllisFreak MN - 20 Jun 2022 at 8:49pm
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'49 A-C WD, '51 A-C WD, '63 A-C D17 Series III, 1968 A-C One-Seventy, '82 A-C 6060, '75 A-C 7040, A-C #3 sickle mower, 2 A-C 701 wagons, '78 Gleaner M2
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 77708
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Posted: 20 Jun 2022 at 8:02pm |
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the "OIL" they run would be unrecognizable to him... and most others.
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Like them all, but love the "B"s.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 29483
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Posted: 20 Jun 2022 at 7:39pm |
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Was seeing if Freegas would even make attempt at a net search
I Do know the more common spec
He would not believe that either
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bigal121892
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Joined: 05 Jan 2010
Location: Nebraska
Points: 738
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Posted: 20 Jun 2022 at 7:23pm |
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Since they get rebuilt after every run, I would think they would get fresh oil as well, don't know about the 30qts.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 29483
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Posted: 20 Jun 2022 at 7:16pm |
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Nope
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FREEDGUY
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Joined: 15 Apr 2017
Location: South West Mich
Points: 5391
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Posted: 20 Jun 2022 at 7:11pm |
Was informed that these engines hold 30 qts. of oil and is dumped every run   . Is there merit to this information ??
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