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SVT Performance (2002-2004) The place to chat about any 2.0L SVT DOHC Zetec engine performance, tuning and exhaust related upgrades.

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Old 05-13-2005, 03:07 AM   #1
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Cutting time off the 1/4

What are key things you could do to the SVT without going FI'ed??

I have alot of bolt on power mods but what about other stuff, just to get the power to the ground?


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Old 05-13-2005, 07:50 AM   #2
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One of the things killing the SVTF is the gearing, since 1'st is tall, that somewhat jacks the launch. Since the SVTF is a FWD, it's hard to lower the gearing so, IMHO, perhaps reducing the wheel diameter would be the next step. I've read on this fourm that there are some 15" wheels that will fit over the 11.8" disks, that matched with the lowest profile tire available, would lower the final ratio and, maybe, improve the 1/4. OTOH our SVTs finish the 1/4 in 3'rd right now, lowering the gearing might cause an extra shift that could cost time.
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Old 05-13-2005, 07:59 AM   #3
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You might try starting to do some stuff with the engine itself. Ported/Polished head, exhaust cam gear, etc. From there, work on the tires/rims. Smaller rims (you'll have a hard time finding ones smaller then 16") with some really sticky tires will allow you to put more to it off the line with less tirespin and allow you to get going that much quicker through that first gear.
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Old 05-13-2005, 08:14 AM   #4
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humm...
do you have thouse mods and even made a 15.3?

you should practice man...
a friend of mine did 15.3 with just intake...

you should be making at least 14.9
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Old 05-13-2005, 08:43 AM   #5
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Quote:
Originally posted by gukin
One of the things killing the SVTF is the gearing, since 1'st is tall, that somewhat jacks the launch. Since the SVTF is a FWD, it's hard to lower the gearing so, IMHO, perhaps reducing the wheel diameter would be the next step. I've read on this fourm that there are some 15" wheels that will fit over the 11.8" disks, that matched with the lowest profile tire available, would lower the final ratio and, maybe, improve the 1/4. OTOH our SVTs finish the 1/4 in 3'rd right now, lowering the gearing might cause an extra shift that could cost time.
This is the real story - right now we're hitting the lights at around 90 in third, which is right about fuel cutoff, and if you either gear it down with smaller tires or add engine power to accelerate faster, you're going to be into fourth before the traps. The only way around this is to raise the cutoff with a tune AND add significant power.

Guys like Tom Lesperance, who are running SVTFs that are in the 12s and 13s, are having to shift into fourth, but they've added so much power that they overcome this penalty.
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Old 05-13-2005, 09:27 AM   #6
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pio, different cars will run different times based on altitude, weather conditions, etc. my car runs 15.9 up at the local dragstrip, but that strip is .3 slower than other tracks in MD, so I know I could have it faster. not only that, but the only time I ran it was when I just got it, and I didn't know quite how to drive it yet. I ESTIMATE that I could have pulled a 15.7 at the local track just by learning how to drive it better, working on my launch. so I figure that I could probably run 15.4-15.3 at a good track around my place. of course, I live not very far above sea level, and the air around here is usually quite humid, which kills the power production of the engine. quarter mile times are not the best way to judge how much power a car makes, or the driver's ability, because if you run the same car at 50 different tracks, you'll get 50 different times. don't put much stock in 1/4 times, they're not reliable
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Old 05-13-2005, 10:25 AM   #7
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true...

my friend car was run in a good track at sea level but the place is hot as hell...
it was on Ponce, PR..
we have humid hot weather all year long...

hey granma...
where did yougot thouse times?
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Old 05-13-2005, 11:58 AM   #8
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in canada ontario, I def need to work on my launch and just gettin a good grip. Next time i go up I plan to be in the 14.9 or at least 15.0
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Old 05-13-2005, 02:13 PM   #9
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what about 1 of these Its like a fogger,but it rams the air
http://www.powerandperformancenews.c...&Store_Code=ZX
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Old 05-13-2005, 03:58 PM   #10
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lightweight flywheel/clutch. Oh yeah, and drop in a Quaife LSD while you're in there...
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