Downpipe rattle - Subaru WRX Forum
 
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#1 Old 05-27-2004, 01:52 PM
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Downpipe rattle

So I installed my downpipe, no leaks, works great. However when I was done installing it, it was resting on a part of the tranny. It would make this horrible vibration sound at idle or when there was chassis flex. I pryed the bracket over to see if it would pull it away from that, which it did to an extent. The idle rattle is gone, but now it just does it when shifting gears at high rpms, when i double clutch/downshift, or when I go over bumps. Is there something I could maybe stick in between them that wouldnt melt yet at the same time take away the rattle? Or would you guys reccomend I crank on the bracket even more to see if I can get it even further away.

BTW, its a perrin downpipe.
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#2 Old 05-27-2004, 02:28 PM
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Plumber's pudding.

Che
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#3 Old 05-27-2004, 02:39 PM
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The bracket on the bottom of the downpipe needs to be moved. Loosen it up and slide it over a litte bit. You can see when you get under which way to move it.
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#4 Old 05-27-2004, 06:26 PM
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That is the one I moved. I'm afraid if I move it any further that it'll snap, or at least loose its strength.

I was thinking that after I installed a catback, i could move those all slightly over so it could put a little more torsion on the dp, but not sure if thats a good idea either.

Also I was thinking that maybe having new motor and tranny mounts would help a bit, since that will keep the engine from moving.
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#5 Old 05-27-2004, 06:47 PM
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It won't snap. Feel free to move it. The motor and tranny mounts won't help that.
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#6 Old 05-28-2004, 02:05 AM
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Thanks a bunch cosmo, you always know the answer!
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#7 Old 07-22-2004, 03:53 PM
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I recently came accross some kartboy extra long exhaust hangers, I am wondering if this would pull my downpipe far enough to not knock on that crossmember, what do you think?
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#8 Old 07-22-2004, 04:18 PM
 
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You don't use exhaust hangers on the downpipe. Its only on the midpipe and muffler
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#9 Old 07-22-2004, 05:40 PM
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I know, I'm saying that if i use those either on my current exhaust or a future exhaust setup, by them hangng my muffler/catback exhaust lower would they also pull my downpipe down and out of harms way.
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#10 Old 07-22-2004, 05:41 PM
 
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Did you try plumbers pudding? You can try it as they are only 32 bucks or whatever to buy.
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#11 Old 07-22-2004, 06:44 PM
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I would think that plumbers pudding would burn or at least get super hard from being on a hot exhaust tube.
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