Electric Vs Mechanical Fuel Pump

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OK.. let me put this one out tright here... I recognize that the amount is most likely extremely tiny, yet exactly how much horse power have the right to one expect to pick up by switching to an electrical fuel pump vs a mechanical.?? has anybody ever done a study on this.? ie ho rod, chevy HI perf... Assuming that the mechanical pump didnt have any kind of difficulties maintaining up via the necessary fuel flow..How much of a HP loss does the fuel pump push rod use vs. an electrical version??Mark
MarkLong Gone: 1984 Z28, 1989 RSCurrent : 1967 Coupe w/350, 2010 2SSMy Photobucket >> http://s145.photobucket.com/user/camarodragon/library/Camaro Restoration?sort=3&page=1/
No performance difference what so ever before. I"ve switched from a mechanical to an electrical ago as soon as my car was running 10.80"s and also observed no gain what so ever before. As a matter of reality, an excellent frifinish still has his edelbrock 110gph mecanical pump on his auto and also has gone as rapid as 10.0
134.!!!!!! With the technology/circulation of todays mechanicals why go electric..... Unmuch less of course your making 700+ hp
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Technically speaking you would certainly loose equine power on the electric as tbelow is a loss (no energy conversion is ever 100% efficient) in going from mechanical power at the crank to the alternator. to make electric power to charge a battery reversing a chemical reactivity that desires to go to completion so you can take the power from the battery to transform to mechanical power to run an electrical fuel pump.:boring: In truth the electrical pump will yield a portion of a equine (or 2 fractions of a horse) even more than a comparable sized mechanical pump only bereason it doesn"t warm up the fuel charge as much as the mechanical (aluminum pump housing is the exact same temp as the block or about 220°F which will certainly vaporize gasoline).Larger Dave
Agree, no distinction.LD,..you didn"t figure drag on the camshaft from the mechanical pump lever in your equation. Here"s the formula:4xHP/16-enginetemp+pumpspring push squared/oilvicosityxRPMcoeffecient=% of HP dragOf course, this in on a heat engine.
Wow.. that would be a good discussion once I go out on date night through my wife... May I quote those formulas...?? Im sure she would uncover it most attrenergetic.
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OK.. so whats via all the electric fuel pumps.. at leastern for carb engines.. why go though all the rigamarol of utilizing an electrical pump, over a mechanical one.. ALL marketing hype??? Anybody have any type of numbers on just how much HP a mechanical pump offers in order to press that lever in 1000"s of times a min.Causage I know once Im trying to do it once to instal the *&$%^%^ pump, its meaner than a bear stuck in a porta potty..I wish I had my own dyno.. id be running tests on this kinda stuff all day.. Gosh.. i really dont acquire out sufficient...
MarkLong Gone: 1984 Z28, 1989 RSCurrent : 1967 Coupe w/350, 2010 2SSMy Photobucket >> http://s145.photobucket.com/user/camarodragon/library/Camaro Restoration?sort=3&page=1/
Agree, no difference.LD,..you didn"t number drag on the camshaft from the mechanical pump lever before in your equation. Here the formula:4xHP/16-enginetemp+pumpspring press squared/oilvicosityxRPMcoeffecient=% of HP dragOf course, this in on a warm engine.

See more: Mechanical Engineering Minor In Mechanical Engineering < University Of Miami


1966 L72 2 door write-up Biscayne bench seat M21 4.10, 16K miles1968 Z28 RS cowl plenum M21 3.73, fresh 302MO stored 450hp 355/Tremec TKO 1970 SS350 Nova daily driver bench seat M21 reinserted via a Tremec TKO 1949 Meteor Pro Street 468/4L80E1955 Chevy Gasser BBC M22 410"s
Tbelow are other benefits to making use of an electrical pump. I would certainly not make the readjust simply in hope for even more power. The tiny little of power you get will certainly not be felt. For nitrous automobile electrical pumps are the way to go (IMO). I have actually run nothing yet, electrical pumps for the past 15 years, it"s even more a personal alternative than anything else. It is many work to install them appropriate however, when done best it is clean and extremely trusted.Setting your float levels is so a lot less complicated and also much less messy through an electrical as well. Electric administer a nice steady and also cool circulation of fuel.
Royce (NO XQSSS) Bradleywww.facebook.com/driveyourjunkhttp://www.youtube.com/watch?v=DSLsGgDjFXE(brief sound/video clip, 3 1/2" exhaust via Borla Sportsmale mufflers)
you require electrical pumps at the rear of the auto to get rid of G pressures on cars that launch difficult. the mechanical pumps suck the fuel and also they can starve the engine momentarily on launch because the fuel in the lines is not immune to the g pressures. this is pretty basic, yet it is 1 factor to use an electrical.
Most world run electrical pumps via carbs on the street bereason everybody else does! And marketing. Last time I checked, Chevy was feeding DZ-302"s, L-88 427"s, and also LS-6 454"s with mechanical pumps from the manufacturing facility. No noise, don"t need to drop the tank and rearea an in-the-tank electrical, course the power supply and relays, and so on. Only two reasons I deserve to think of to run electrical is 1. New blocks don"t have actually a provision for a mechanical pump or 2. fuel injection. Just my .02 cents worth.
Cool, How many kind of of those manufacturing facility cars/engines actually are/were fast by todays standards? So you would certainly run a mechanical pump on a blvery own huge block if it had carbs and a provision for the pump?Mechanical pumps are fine for many applications but, tright here are times when it just renders feeling to go electric.
Royce (NO XQSSS) Bradleywww.facebook.com/driveyourjunkhttp://www.youtube.com/watch?v=DSLsGgDjFXE(brief sound/video clip, 3 1/2" exhaust through Borla Sportsguy mufflers)
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Don TC # 349Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner because Dec 1968http://s102.photobucket.com/albums/m112/zdld17/?action=view¤t=115_1577.jpg
I missed the part in the thcheck out starter where we were talking about a supercharged race engine. I would assume that the majority of civilization would run an electrical pump on an all out race car. When he asked if it was just marketing as the reason why electric pumps are run, I think he is talking about street equipments. On a street vehicle, I stand also by my original reply. But hotrodding is an individual kind hobby/sport so the actual answer is run whatever before YOU want!
dragon0123You get nearly all of the power that entered the compression of the mechanical fuel pump spring back (less the work done to actually pump the fuel which is about a sixth of a equine power or about 130 Watts). Have you tried compushing valve springs by hand also lately, the seat pressure keeps climbing because of my cam choices but we don"t concern around the energy to compress those monsters (when aget you acquire all the energy back less frictional loses in the valve guides and also waste heat from the steel spring flexing). Same difference.Larger Dave
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