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Old 06-25-2010, 04:44 PM   #1
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Default Downpipe to turbo keeps loosening up

I keep developing an exhaust leak around that area, start getting weird sounds.

I have TD04 turbo, begi downpipe and exhaust.


A few days ago I had new wideband bung put it and the exhaust shop tightened everything down well, 2-3 days later and I'm getting the leaking sound again.


Any advice?
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Old 06-25-2010, 05:03 PM   #2
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v-band housing
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Old 06-25-2010, 05:16 PM   #3
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Haha yeah pretty much.



Not gonna happen with this greddy stuff.
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Old 06-25-2010, 05:18 PM   #4
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Welcome to the club. Incredibly common problem. If you don't have a flex section in the exhaust that can help. Try higher quality connectors. Try high quality spring washers. Try bracing the turbo to the engine block. Try.....

V-band seems to be the only permanent fix. The dozen other things you can do can help but not completely solve the problem.
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Old 06-25-2010, 05:34 PM   #5
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I hear ya...

Is loctite effective? Or is it too hott?
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Old 06-25-2010, 05:52 PM   #6
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Tighten bolts then weld them to the flange
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Old 06-25-2010, 06:14 PM   #7
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Quote:
Originally Posted by johnmatt View Post
Tighten bolts then weld them to the flange
Thats hardcore


The best thing would be to drill the bolts (or buy drilled bolts) and wire them up. Its annoying if you take your **** apart a lot, but in that case you should just go for vbands anyway.
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Old 06-25-2010, 06:34 PM   #8
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Turn vtec down.
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Old 06-25-2010, 07:14 PM   #9
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Quote:
Originally Posted by astroboy View Post
turn vtec down.
not my vtec bro
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Old 06-25-2010, 09:58 PM   #10
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Quote:
Originally Posted by johnmatt View Post
Tighten bolts then weld them to the flange
This really isn't that bad of an idea, if you have room to put a v-band in your DP. Another option.. a very painful and possibly not feasible option is safety wire. That stuff is a serious PITA though. Drill tiny holes through all the bolt heads and then manage to thread and twist all the wire properly without breaking it. Pending you can even reach all of the bolts.
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Old 06-25-2010, 10:30 PM   #11
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nordlock washers...
i havent used but i hear good things.


my last turbo had a vband welded right onto the exhaust housing.... not from garrett... you could do that. but its tough with an internally gated turbo.
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Old 06-25-2010, 10:48 PM   #12
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Have the flange resurfaced on the downpipe.
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Old 06-25-2010, 10:57 PM   #13
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Just tightened 3 of the bolts, but still making the sound. can't reach other 2 =\
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Old 06-25-2010, 11:33 PM   #14
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i have a related question -- is it necessary to use studs? Anything wrong with using a bolt? One of my studs broke and i just replaced it with an 8.8 stainless bolt.. am i asking for trouble?

i imagine that for mounting / initial mating it would be easier to use studs but what if you just left one stud and used bolts for remainder?
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Old 06-25-2010, 11:49 PM   #15
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Quote:
Originally Posted by ctxspy View Post
i have a related question -- is it necessary to use studs? Anything wrong with using a bolt? One of my studs broke and i just replaced it with an 8.8 stainless bolt.. am i asking for trouble?

i imagine that for mounting / initial mating it would be easier to use studs but what if you just left one stud and used bolts for remainder?
I had studs, and the went to grade 8 bolts because to make it easier to work on, never had a single problem, PLUS you can drill the bolts for safety wire.
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