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  The Tire Rack

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Old 04-11-2015, 01:40 PM   #1
ivanstepul
 
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Drag Racing yaris 15.969
I went to the drags a while ago and posted best time of 15.969
mods
manual trans
intake
header
midpipe(with stock muffler)
weight reduction ocd( i took off front license plate, folded mirrors, took off antenna, hubcaps, loose change, carpet, passenger seat)
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Last edited by ivanstepul; 04-14-2015 at 12:00 AM.
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Old 04-11-2015, 02:36 PM   #2
428CobraJet
 
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That's good....i see you're running 17 in tires. Is the diameter different from original? Ie...change in gear ratio?
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Old 04-11-2015, 07:05 PM   #3
malibuguy
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Not bad. Mine with a soft launch runs 16.3s
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Old 04-11-2015, 07:17 PM   #4
CrankyOldMan
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I tried that a few times with my AutoX tires and almost broke 17. Must be my technique is crap, because that was after the supercharger install.
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Old 04-11-2015, 09:02 PM   #5
ivanstepul
 
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Quote:
Originally Posted by 428CobraJet View Post
That's good....i see you're running 17 in tires. Is the diameter different from original? Ie...change in gear ratio?
actually when I ran the quarter I had 15 inch rims with stock size tires 15/65/185 but the tires were really nice they were the altimax rt tires
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Old 04-11-2015, 09:07 PM   #6
ivanstepul
 
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Quote:
Originally Posted by 428CobraJet View Post
That's good....i see you're running 17 in tires. Is the diameter different from original? Ie...change in gear ratio?
no change in gear ratio stock trany
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Old 04-11-2015, 09:20 PM   #7
CrankyOldMan
2ZR swap. DO IT! Ask how!
 
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Quote:
Originally Posted by ivanstepul View Post
no change in gear ratio stock trany
If your tires are a different diameter than stock, it changes the effective great ratio. It's an easy way to get more torque without tearing your gearbox apart.
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Old 04-11-2015, 09:29 PM   #8
ivanstepul
 
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Originally Posted by CrankyOldMan View Post
If your tires are a different diameter than stock, it changes the effective great ratio. It's an easy way to get more torque without tearing your gearbox apart.
I'm not a science expert but there is more torque if the rim/tire is a smaller diameter right?
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Old 04-11-2015, 09:43 PM   #9
CrankyOldMan
2ZR swap. DO IT! Ask how!
 
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Quote:
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I'm not a science expert but there is more torque if the rim/tire is a smaller diameter right?
Correct. You can always trade torque for speed by going larger, and vice versa.
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Old 04-13-2015, 07:51 AM   #10
Idahotom
 
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Very cool.

And I thought I had MY HB stripped down, I'm a slacker, leaving the carpet and front passenger seat in!
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Old 04-13-2015, 09:37 AM   #11
Astroman
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You missed this: OFFICIAL 1/4 mile time thread *TIMESLIPS REQUIRED*

Manual or auto? Post your slip, any modifications, and what transmission.
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