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“well I’m faster than a greased cheetah strapped to a bullet train.” - Carl Edwards
vacuum pump
Legend
Total Posts: 250
Joined 01/28/2009
does nascar use a vacuum pump on there engines?
Legend
Total Posts: 250
Joined 01/28/2009
i should say do nascar teams use a vacuum pump on there engines?
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“well I’m faster than a greased cheetah strapped to a bullet train.” - Carl Edwards
Abnormal User
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Joined 06/09/2008
I don't think so. Then again, I've never looked for one when examining the cars. From the standpoint of "one less thing to break", I would say no.
Ultimate Insider
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i should say do nascar teams use a vacuum pump on there engines?
The closest thing to a vacuum pump on their engines is the air induction system... when they seal off the cowl induction and intake the air from under the car, they'll suck down to the track, at the cost of breathing hot air.
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What's a vacuum pump? What's it for? Or, I should say, what does it create vacuum for?
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jimclark
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What's a vacuum pump? What's it for? Or, I should say, what does it create vacuum for?
Exactly. I am aware of no vacuum operated devices on a Cup car. Vacuum pumps have been used at times on production cars (mostly diesels or other forced induction enines)) to operate things such as HVAC door motors and the like that were historically engine manifold vacuum operated; today most all of those things are electrically powered.
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does nascar use a vacuum pump on there engines?
Is there anybody out there???
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jimclark
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What's a vacuum pump? What's it for? Or, I should say, what does it create vacuum for?
Exactly. I am aware of no vacuum operated devices on a Cup car. Vacuum pumps have been used at times on production cars (mostly diesels or other forced induction enines)) to operate things such as HVAC door motors and the like that were historically engine manifold vacuum operated; today most all of those things are electrically powered.
The OP's question was probably in reference to the brakes. Since it is common on street cars and light trucks to use a vacuum boost system on the brakes, I assume he was wondering if NASCAR did the same thing. So far as I know, they haven't since the '60's.
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i should say do nascar teams use a vacuum pump on there engines?
The closest thing to a vacuum pump on their engines is the air induction system... when they seal off the cowl induction and intake the air from under the car, they'll suck down to the track, at the cost of breathing hot air.
Considering the huge amounts of high pressure air in the engine area, that is from the wheels pumping air into it, any air that the motor can pull into it is dwarfed by the amount of air that is disturbed by the turning front wheels and tires. It is a large reach and incorrect to say that the carb is sucking the car to the ground.
To seal off the carb from air flow is robbing the engine of horsepower as ram air effect or cold air boxes (drawing air from the high pressure air at the windshield/hood area) are noted to increase horsepower.
Wheels are in a sense, large air pumps, though to a negative effect on the car rather than a helpful one.
Air pumps on street cars are typically used for smog reasons and not for performance, unless that air pump is a turbo or supercharger, none of which are on a Cup car.
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BigMan88 good question; you must be a drag racer. In drag racing vacuum pumps are very common especially on wet sump engines and some dry sump engines. NASCAR does not allow the use of a vacuum pump and for the most part they are not needed in a dry sump application like NASCAR. Most good 6 stage dry sump pumps will pull 16 to 20 inches so they really need no other supplementary crankcase vacuum. As you probably know from drag racing you can still run a dry sump system with a vacuum pump, but they are of much greater value in high horsepower wet sump applications where simple valve cover breathers don’t cut it. Great question!
Legend
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Joined 01/28/2009
BigMan88 good question; you must be a drag racer. In drag racing vacuum pumps are very common especially on wet sump engines and some dry sump engines. NASCAR does not allow the use of a vacuum pump and for the most part they are not needed in a dry sump application like NASCAR. Most good 6 stage dry sump pumps will pull 16 to 20 inches so they really need no other supplementary crankcase vacuum. As you probably know from drag racing you can still run a dry sump system with a vacuum pump, but they are of much greater value in high horsepower wet sump applications where simple valve cover breathers don’t cut it. Great question!
thanks for the answers but im not a drag racer but i do go to a school that teaches you ho to build drag race motors and we do use a vaccum pump and i was wondering if nascar did to.
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