perrin subframe lockdown system - Subaru WRX Forum
 
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#1 Old 07-23-2009, 04:26 PM
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perrin subframe lockdown system

ok so i recently installed the perrin subframe lockdown system to get rid of the annoying thud when shifting hard. my car would thud shifting into every gear but 5th. after the install it thuds exactly the same. it sounds like the thud was coming from the front of the car tho. any ideas what it could be?

oh and i noticed that after the install my car seems to have less understeer. so im still happy
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#2 Old 07-24-2009, 12:32 AM
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Check the pitch stop under the intercooler. It could also be the motor or tranny mounts.

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#3 Old 07-24-2009, 08:24 AM
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It's often the rear diff. Have you tried rear diff bushings?

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#4 Old 07-24-2009, 08:46 AM
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the lockdown system included rear diff bushings and lock out bolts.
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