Corvette R Wins Sebring running M1 0w50

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Originally Posted By: 69GTX
I see Team Corvette is also using the 0w. Hey, isn't that too thin for racing...lol.


Not surprising given that M1 0w-40 has been one of the staples of the 24hr races for years
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They run heavier grades for endurance racing to offset fuel dilution. The 50 grade was probably a 30 grade after the race lol. running M1 5w30 would be a mistake IMO.
 
A dry sump oil system with a big oil cooler and a generous capacity makes it difficult to compare their oil performance with the average hot street car.
 
Originally Posted By: buster
They run heavier grades for endurance racing to offset fuel dilution. The 50 grade was probably a 30 grade after the race lol. running M1 5w30 would be a mistake IMO.


Yes, Corvette Racing most likely drops (back) down to the 0W-40 for most of the shorter races in this series.
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(And yes, they measure their oil capacity in multiples of gallons in their 5+ stage dry sump systems.)
 
Makes sense since you can't change oil during an endurance race. They are allowed to top off though. The Corvette Racing group has a spiffy way of doing it from the outside of the car direct into the dry-sump tank.
 
Originally Posted By: dailydriver
(And yes, they measure their oil capacity in multiples of gallons in their 5+ stage dry sump systems.)


Miniscule in comparison to the 6 Pratt & Whitney R-4360 Wasp radial engines used on the B-36 Convair Bomber.

https://en.wikipedia.org/wiki/Convair_B-36_Peacemaker

"The Wasp Major engines had a prodigious appetite for lubricating oil, each engine required a dedicated 100 gal (380 l) tank."

That's 600 gallons of oil for all 6 engines. Not only that, each engine had 56 spark plugs. That's a total of 336 spark plugs for all 6 engines. All of which fouled quickly on the heavily leaded fuel used in the day. Unbelievable airplane.
 
Originally Posted By: billt460
Originally Posted By: dailydriver
(And yes, they measure their oil capacity in multiples of gallons in their 5+ stage dry sump systems.)


Miniscule in comparison to the 6 Pratt & Whitney R-4360 Wasp radial engines used on the B-36 Convair Bomber.

https://en.wikipedia.org/wiki/Convair_B-36_Peacemaker

"The Wasp Major engines had a prodigious appetite for lubricating oil, each engine required a dedicated 100 gal (380 l) tank."

That's 600 gallons of oil for all 6 engines. Not only that, each engine had 56 spark plugs. That's a total of 336 spark plugs for all 6 engines. All of which fouled quickly on the heavily leaded fuel used in the day. Unbelievable airplane.


My favourite is still the SR-71 Blackbird with its incredible P&W hybrid turbo/ramjets. And it leaked fuel all over the place when stationary
grin.gif
Probably the best thing to come out of the Cold War and IMHO, the best example of American ingenuity and ability to stand up and be the best when that's what the situation demanded
thumbsup2.gif
 
Originally Posted By: OVERKILL
My favourite is still the SR-71 Blackbird with its incredible P&W hybrid turbo/ramjets. And it leaked fuel all over the place when stationary
grin.gif
Probably the best thing to come out of the Cold War and IMHO, the best example of American ingenuity and ability to stand up and be the best when that's what the situation demanded
thumbsup2.gif



Yeah, but it didn't burn oil!
grin.gif
 
Originally Posted By: OVERKILL

My favourite is still the SR-71 Blackbird with its incredible P&W hybrid turbo/ramjets. And it leaked fuel all over the place when stationary
grin.gif
Probably the best thing to come out of the Cold War and IMHO, the best example of American ingenuity and ability to stand up and be the best when that's what the situation demanded
thumbsup2.gif



The MiG-25 pilot who defected to Japan (Viktor Suvorov??) wrote about how futile it was to try to intercept an SR-71, even in the very high performance plane he flew. He wrote that the US spy pilots would taunt them by crossing into Soviet airspace and waiting until the MiGs fired their missiles, then turning tail and outrunning the AAMs. Hard to imagine!!
 
Originally Posted By: billt460
Originally Posted By: dailydriver
(And yes, they measure their oil capacity in multiples of gallons in their 5+ stage dry sump systems.)


Miniscule in comparison to the 6 Pratt & Whitney R-4360 Wasp radial engines used on the B-36 Convair Bomber.

https://en.wikipedia.org/wiki/Convair_B-36_Peacemaker

"The Wasp Major engines had a prodigious appetite for lubricating oil, each engine required a dedicated 100 gal (380 l) tank."

That's 600 gallons of oil for all 6 engines. Not only that, each engine had 56 spark plugs. That's a total of 336 spark plugs for all 6 engines. All of which fouled quickly on the heavily leaded fuel used in the day. Unbelievable airplane.


The R4360 had something like 7 separate oil circuits within the engine that operated at different regulated pressures.
 
Originally Posted By: A_Harman
The R4360 had something like 7 separate oil circuits within the engine that operated at different regulated pressures.


Here is one of the few remaining of the monsters running on a test trailer. The largest piston engine ever put into an airplane. 4 rows of awesomeness.
 
Lycoming had the XR-7755, 4 rows of 9 cylinders. This was the engine that was originally intended to power the B-36. (But I don't know if it ever actually flew in an airplane.) The B-36 was underpowered with only 6 R-4360's, which is why later models had 4 jet engines added.

Look for the movie "Strategic Air Command", starring Jimmy Stewart. It has a great continuous shot of a B-36 on a takeoff run.
 
Originally Posted By: A_Harman
Look for the movie "Strategic Air Command", starring Jimmy Stewart. It has a great continuous shot of a B-36 on a takeoff run.


Here is a clip from it. They rotate the aircraft, (3:44 in the video), and it just sits there eating up another 2,000 feet of runway before it lifts off.
 
Originally Posted By: billt460
Originally Posted By: A_Harman
Look for the movie "Strategic Air Command", starring Jimmy Stewart. It has a great continuous shot of a B-36 on a takeoff run.


Here is a clip from it. They rotate the aircraft, (3:44 in the video), and it just sits there eating up another 2,000 feet of runway before it lifts off.


Wow. I wonder what the engine-out climb is for that
shocked.gif
 
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