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Best Way to fix Rear end Clunk

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Old Jan 29, 2009 | 08:01 AM
  #1  
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Best Way to fix Rear end Clunk

So as many evo owners.. my rear end makes that horrific clunking noise when banging into gears. The car does get tracked when the season is good and other than that i just daily drive it. The car has 40k on it now and i was wondering what you guys think is the best economical approach to fixing the rear end clunk???

i read into this a bunch and keep hearing pro's and cons about the mustache bar eliminator and a few other approaches.

i have no issue doing some rebuilding and using poly bushings if this will solve the problem, on a past car of mine i did a full drivetrain upgrade with a built rear diff and all brand new solid bushings, also while the subframe was off the car i got it powdercoated and when everything went back together the drive train was solid

the car still has stock engine mounts and stock rear diff parts etc....


let me know what you think the best thing to do to help or eliminate this noise???


thanks

- mark -
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Old Jan 29, 2009 | 08:06 AM
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i plan on down the road getting the BR mustache bar and BR aluminum rear diff side supports but one thing that helped alot was NLTS Patch for my ecu...i would get the loudest clunk from my rear diff (exedy twin hd, SS upper and lower clutch lines, clutch pill removed, underhood bushing kit) but now with the NLTS patch i can bearly hear the clunk...my guess is that the NLTS patch took away alot of drivetrain shock...
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Old Jan 29, 2009 | 08:10 AM
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Shift more smoothly. Urethane bushings all around should take care of it. I wanna get rid of all the rubber in all my mounts sometime. Right now I have the tephra nlts and it doesn't do it unless I drop the clutch at the wrong rpm. If I take it to 7k and bang the next gear its smooth. I haven't heard it in awhile just from working on my clutch engagement
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Old Jan 29, 2009 | 11:00 AM
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but the issue is at the track.. when pulling 1.65 60 fts and trying to get lower 1/4 mile times id rather not worry bout my rear diff like that
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Old Jan 29, 2009 | 01:37 PM
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Go with the Buschur Mustache Bar and Aluminum Side mounts. I have them and never hear the clunk with 1.4 60' and running 9s.
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Old Jan 29, 2009 | 02:57 PM
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try shifting quickly...and NOT hard. Your answer lies in the fact that quick shifts are faster than hard shifts.
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Old Jan 30, 2009 | 12:21 AM
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so the option is either...

change driving habits ..

or get the mustache elimanator bar/side mounts .... which i hear u get a noisy drivetrain noise when installed????
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Old Feb 15, 2009 | 11:37 AM
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it's wise to check the rear axle assembly along with the rear differential to see if there is any play in the parts before adding those fabolous parts.
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Old May 6, 2009 | 06:12 AM
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I have the same, identical issue. I bought my car a week ago and experience the same exact bucking noise seemingly under the rear seat. For all the money these cars cost, shifting style shouldnt be a prerequisite. Anyone know the best place to get these solution parts? The clutch was upgraded when I bought it. I DO love the car but this noise is unsettling.

Any help would be appreciated.
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Old May 13, 2009 | 10:10 PM
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Link for the best place to buy these parts please??
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Old Jun 4, 2009 | 09:57 PM
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The energy sus moustache bar bushings and rear end bushings alone fix this...
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Old Jun 4, 2009 | 10:10 PM
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Blue Evo 8's Avatar
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Originally Posted by Asmodeus6
The energy sus moustache bar bushings and rear end bushings alone fix this...
Thats what I'm running, and I highly recommend this!
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Old Jun 4, 2009 | 10:19 PM
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Originally Posted by Asmodeus6
The energy sus moustache bar bushings and rear end bushings alone fix this...
OH hell do they ever.

Ive ridden in cars that have the sold bushings from buschur.

Not cool for a DD unless you want to have a conversation with your rear end as you accelerate and decelerate.
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Old Jun 5, 2009 | 12:28 PM
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https://www.evolutionm.net/forums/ev...ur-garage.html

You should definitely look into those. Good chance they will fix the clunk without causing a conversation with your rear end.


https://www.evolutionm.net/forums/se...trunk-bar.html

https://www.evolutionm.net/forums/se...-bushings.html

Last edited by fostytou; Jun 5, 2009 at 12:35 PM.
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Old Jun 25, 2009 | 09:45 PM
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i have the bwoody perfomance lower solid moter mount and after it was instaled i have no more clunk nois. and yes quicker shifts dont clunk lol.
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