4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

crank pulley with s/c?

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Old 08-29-2007, 05:39 PM
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Chris98Gt
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Default crank pulley with s/c?

So I should put my stock pulleys back on since I don't want to underdrive the s/c right?
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Old 08-29-2007, 05:41 PM
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2002GTAUTOVERT
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Default RE: crank pulley with s/c?

with your U/D pulleys.. the boost will be screwed up. everyone i know just threw their stockers back on for a more reliable PSI reading.
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Old 08-29-2007, 06:01 PM
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02 Ninja
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Default RE: crank pulley with s/c?

^^^^^^^^What he said!
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Old 08-29-2007, 06:16 PM
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tbirdscwd
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Default RE: crank pulley with s/c?

It won't just throw off boost readings. Like you said, a UD crank pulley will drive your s/c slower thus creating less pressure and less power. Your boost reading will be just as reliable, it will just be lower because you aren't spinning your blower as fast.
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Old 08-29-2007, 06:27 PM
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2002GTAUTOVERT
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Default RE: crank pulley with s/c?

ORIGINAL: 02 Ninja

^^^^^^^^What he said!
+1
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Old 08-29-2007, 07:26 PM
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mfj
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Default RE: crank pulley with s/c?

ORIGINAL: 2002GTAUTOVERT

ORIGINAL: 02 Ninja

^^^^^^^^What he said!
+1
+20 million

the boost will read accurately, itll just be lower boost, because the impeller wont be spinning that fast. throw the stockee back on!!
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Old 08-30-2007, 12:31 AM
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2000GT4.6
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Default RE: crank pulley with s/c?

no underdrives on a FI car.
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Old 08-30-2007, 11:01 AM
  #8  
2002GTAUTOVERT
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Default RE: crank pulley with s/c?

ORIGINAL: mfj

ORIGINAL: 2002GTAUTOVERT

ORIGINAL: 02 Ninja

^^^^^^^^What he said!
+1
+20 million

the boost will read accurately, itll just be lower boost, because the impeller wont be spinning that fast. throw the stockee back on!!
i had underdrives on mine before i went back to stock.. boost gauge was all over the place..??
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Old 08-30-2007, 11:09 AM
  #9  
nanaki
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Default RE: crank pulley with s/c?

if anything you want a lower crank pulley to spin that shat up quicker.
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