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Joined: Apr 2002
Posts: 2,483
Hard-core CEG'er
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Hard-core CEG'er
Joined: Apr 2002
Posts: 2,483 |
Originally posted by Paul Kienitz:
If a 25% reduction in pump speeds yields 8 foot-pounds, that would imply that using all-electric pumps could give you like 20 foot pounds! At least at the high end. Wouldn't tuners be all over a mod that yielded that much?
Pro drag racers ARE all over this!
NASCAR has found gains all over the place;
1) Down sizing oil pump to flow just enough oil and no more, gains 8-10 HP
2) Running a vaccum on the crankcase to suck out air below the piston before the down stroke, gains 10-12HP
BAT lists the electric water pump as gaining 6HP on the Duratec.
Little things can make a big difference.
Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST
Pre98 Zetec - Some Mods
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Joined: May 2002
Posts: 21,653
I have no life
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I have no life
Joined: May 2002
Posts: 21,653 |
umm, they are on that. like the electric water pumps and so forth. i think the mass really does have something to do with it, more than what you would think.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
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Joined: Jul 2000
Posts: 3,465
Hard-core CEG'er
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Hard-core CEG'er
Joined: Jul 2000
Posts: 3,465 |
Originally posted by SleeperZ:
Originally posted by Paul Kienitz:
If a 25% reduction in pump speeds yields 8 foot-pounds, that would imply that using all-electric pumps could give you like 20 foot pounds! At least at the high end. Wouldn't tuners be all over a mod that yielded that much?
Pro drag racers ARE all over this!
NASCAR has found gains all over the place;
1) Down sizing oil pump to flow just enough oil and no more, gains 8-10 HP
2) Running a vaccum on the crankcase to suck out air below the piston before the down stroke, gains 10-12HP
BAT lists the electric water pump as gaining 6HP on the Duratec.
Little things can make a big difference.
also keep in mind that doing something small my give little gains but in conjunction with other mods that small gain will become greater  just like adding just and intake yeah you gain some power but add exaust to that and your gains are gonna be more than if you just looked at the exaust with a stock intake
2003 Subaru WRX some mods
Even if you don't have the answer, you certainly have to admire the problem.
aka ZetecRacing
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Joined: Jun 2003
Posts: 271
CEG\'er
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CEG\'er
Joined: Jun 2003
Posts: 271 |
ok i slept through this part in physics but it is easy to see where you can free up power using a udp. Here is an experiment for you, get a round wooden rod and get a moderately heavy pulley shaped object that you can put on the end of the rod and try to spin it. Now put a similar sized but much lighter pulley like object on the rod and try to spin it see which one is easier to get started.
1996 Zetec MTX
NO Mods it's only a matter of money now though.
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Joined: Aug 2001
Posts: 17,248
CEG road warrior
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CEG road warrior
Joined: Aug 2001
Posts: 17,248 |
Originally posted by SleeperZ:
Originally posted by Paul Kienitz:
If a 25% reduction in pump speeds yields 8 foot-pounds, that would imply that using all-electric pumps could give you like 20 foot pounds! At least at the high end. Wouldn't tuners be all over a mod that yielded that much?
Pro drag racers ARE all over this!
NASCAR has found gains all over the place;
1) Down sizing oil pump to flow just enough oil and no more, gains 8-10 HP
2) Running a vaccum on the crankcase to suck out air below the piston before the down stroke, gains 10-12HP
BAT lists the electric water pump as gaining 6HP on the Duratec.
Little things can make a big difference.
I need all those things....except the Duratec. 
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: May 2001
Posts: 682
Veteran CEG\'er
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Veteran CEG\'er
Joined: May 2001
Posts: 682 |
Originally posted by fingas:
ok i slept through this part in physics but it is easy to see where you can free up power using a udp. Here is an experiment for you, get a round wooden rod and get a moderately heavy pulley shaped object that you can put on the end of the rod and try to spin it. Now put a similar sized but much lighter pulley like object on the rod and try to spin it see which one is easier to get started.
Yep, that shows how your engine will rev much faster with a lighter pulley. When you're in neutral!
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Joined: Jul 2000
Posts: 3,465
Hard-core CEG'er
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Hard-core CEG'er
Joined: Jul 2000
Posts: 3,465 |
Originally posted by Paul Kienitz:
Originally posted by fingas:
ok i slept through this part in physics but it is easy to see where you can free up power using a udp. Here is an experiment for you, get a round wooden rod and get a moderately heavy pulley shaped object that you can put on the end of the rod and try to spin it. Now put a similar sized but much lighter pulley like object on the rod and try to spin it see which one is easier to get started.
Yep, that shows how your engine will rev much faster with a lighter pulley. When you're in neutral!
ummm works the same in gear too... I have had a few people drive my car before and after the UDP and all of them say that my gas pedal is touchy RPMs climb much faster with the pulley in or out of gear.
2003 Subaru WRX some mods
Even if you don't have the answer, you certainly have to admire the problem.
aka ZetecRacing
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Joined: Aug 2001
Posts: 17,248
CEG road warrior
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CEG road warrior
Joined: Aug 2001
Posts: 17,248 |
Originally posted by ZetecRacing:
Originally posted by Paul Kienitz:
Originally posted by fingas:
ok i slept through this part in physics but it is easy to see where you can free up power using a udp. Here is an experiment for you, get a round wooden rod and get a moderately heavy pulley shaped object that you can put on the end of the rod and try to spin it. Now put a similar sized but much lighter pulley like object on the rod and try to spin it see which one is easier to get started.
Yep, that shows how your engine will rev much faster with a lighter pulley. When you're in neutral!
ummm works the same in gear too... I have had a few people drive my car before and after the UDP and all of them say that my gas pedal is touchy RPMs climb much faster with the pulley in or out of gear.
It does!
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: Jul 2000
Posts: 3,465
Hard-core CEG'er
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Hard-core CEG'er
Joined: Jul 2000
Posts: 3,465 |
but what do we know we only have it installed on our cars
2003 Subaru WRX some mods
Even if you don't have the answer, you certainly have to admire the problem.
aka ZetecRacing
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Joined: May 2001
Posts: 682
Veteran CEG\'er
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Veteran CEG\'er
Joined: May 2001
Posts: 682 |
Just lightening a pulley is not going to change your quarter mile time, no matter how much quicker the engine seems to rev.
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