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Apr 20, 2006, 08:03 AM
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#1
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Evolving Member
Personal Sales Rating: ( 2)
Join Date: Apr 2006
Location: Houston
Posts: 328
Drives: 06 GSR
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loud booming clunk on fast 1-2 shift
so whats the loud noise from the back of the car on a fast 1-2 shift?
the rear diff bouncing against something?
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Apr 20, 2006, 08:11 AM
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#2
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Drives: Ion(work), Caravan(people), X5 (Wife), C6 Z06 delivered 3/24, 05' EVO Sold!!
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I get them on fast shift using the clutch and it's worse if I'm powershifting sorda annoying! None of my previous DSM's ever did this, but it seems to be a common but normal issue.
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Apr 20, 2006, 08:17 AM
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#3
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Location: Bham
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Drives: R32 & Evo VIII
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happened on the 03 i test drove years ago, but does not happen on my g/f's 03
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Apr 20, 2006, 08:21 AM
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#4
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Location: 3rd Rock {from = sun}
Posts: 1,392
Drives: Evo803Yello
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It's the loose mounts that hold the rear diff.
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Apr 20, 2006, 08:21 AM
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#5
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Drives: 04 Graphite G35, Blk Evo 8 W/35r, Vespa Scooter w/ a Jet Engine (Daily);-)
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hhmm, my car starting doing this every once and than at the track. Kinda sounds like a belhousing? `
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Apr 20, 2006, 08:24 AM
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#6
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Personal Sales Rating: ( 3)
Join Date: Apr 2006
Location: GH
Posts: 130
Drives: Evo 8
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my car did it from the day i broke it in till now, i dont belive its anything to worry about unless it starts to get louder and louder
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Apr 20, 2006, 08:24 AM
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#7
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Drives: Nothing
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Y I have a clunk also.. but sounds more like its the tranny... Ill have to check this out now
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Apr 20, 2006, 08:31 AM
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#8
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Personal Sales Rating: ( 2)
Join Date: Jan 2006
Location: Denver
Posts: 377
Drives: IX MR
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Many Subaru's do this also on some hard shifts, my '04 STi did. My IX MR has done it as well. In both cases I believe it's (as stated above) the rear diff mounts clunking because they're soft. Replacing bushings is popular amongst the Subaru crowd, but I haven't come across anything for the Evo (haven't really been looking, either).
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Apr 20, 2006, 08:46 AM
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#9
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Location: Sycamore, IL
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Drives: 05 EVO VIII
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Mine does that too, I wonder if there's any kinda poly bushings that could be installed or a brace or something???
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Apr 20, 2006, 08:49 AM
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#10
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Posts: 17
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Quote:
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Originally Posted by texrex2002
so whats the loud noise from the back of the car on a fast 1-2 shift?
the rear diff bouncing against something?
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This Happens when you power shift.... you need to slip the clutch into 2nd when you mash....
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Apr 20, 2006, 10:33 AM
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#11
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Location: Simi Valley, CA
Posts: 463
Drives: 07 VW GTI
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Quote:
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Originally Posted by texrex2002
so whats the loud noise from the back of the car on a fast 1-2 shift?
the rear diff bouncing against something?
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Didn't you have a WRX? Mine did the exact same thing on a quick 1-2 shift. Try not to side step the clutch is all I can say.
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Apr 20, 2006, 10:41 AM
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#12
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I love the noise, it tells me i'm shifting fast enough  .
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Apr 20, 2006, 10:43 AM
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#13
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Drives: Evo803Yello
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Trust me on this. It's just the loose/soft rear diff mounts. You can buy harder mounts for it, but then do you want the mount to take the shock or the Diff itself?.
On my car if I shift too fast it will sound and FEEL like a sledge hammer hitting your back. 
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He who said that there is no replacement for displacement didn't know pkZIP. :p
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Apr 20, 2006, 11:05 AM
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#14
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Location: Birmingham, AL
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Drives: '05 WW CT9A GSR SSL, '98 NW D32A
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Mine does it too. I just started letting the clutch out slower and it won't.
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Apr 20, 2006, 11:08 AM
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#15
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Location: Chicago
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Drives: Electric Blue Evo, Integra GS-R
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Quote:
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Originally Posted by GPTourer
Mine does it too. I just started letting the clutch out slower and it won't.
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Tags
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bearing, carrier, clunk, clutch, engages, evo, focus, loud, shift, shifting, svt, wrx  |
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