Downpipe rattling against the subframe. - Miata Turbo Forum - Boost cars, acquire cats.

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Bellengineering - Miata Accessories Ordering and General Information Stephanie Turner 830-438-2890 ext. 103 [email protected]

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Old 04-15-2013, 08:56 PM   #1
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Default Downpipe rattling against the subframe.

So i thought it was because of the engine mounts or the transmission bracket that holds the stock exhaust. Yesterday i got brand new mounts in and removed the tranny bracket. No luck, the downpipe is still rattling against the subframe. Any ideas?

This is the begi s kit with the regular non separated gasses dp.
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Old 04-15-2013, 08:57 PM   #2
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bend it? lol
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Old 04-15-2013, 09:09 PM   #3
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U mean smash it with a hammer? I'm trying to avoid that since its only a 2.5" pipe.
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Old 04-15-2013, 09:49 PM   #4
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sawzall? grinder? jaws of life?


can you clock the exhaust housing a few degrees somehow? mine rattled and still does sometimes but i have vband so i can rotate the pipe and clamp it in place again.
you can use exhaust wrap on the spot it rubs to stop the noise at least
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Old 04-15-2013, 10:51 PM   #5
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maybe if you cushioned it with something like a bunch of heat wrap or something fire resistant.
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Old 04-15-2013, 11:01 PM   #6
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Sucks, surprised to see this seeing as though you have both the begi manifold and downpipe. I would try throwing some heat wrap around it as well, might make it tolerable....
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Old 04-20-2013, 08:09 PM   #7
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Hi there,
Sorry for the late reply, I've been out with pneumonia. First, I would make sure you have the right down pipe. Did you get it new or used? If new, you can loosen all fasteners, wedging something between the subframe and the downpipe, then re-tighten the fasteners. If that does not work, give me a call and we will figure it out. If the pipe is used, can you post some photos and details of your car? Exhaust systems details too please.
Thanks,
Stephanie
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Old 04-20-2013, 11:43 PM   #8
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It was used. Its the begi s kit.

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Downpipe rattling against the subframe.-dscf0046.jpg  
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Old 04-21-2013, 12:39 AM   #9
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Try what Stephanie said first, if that doesn't give you enough clearance then see if clocking the turbo a small amount helps. One mm on top could be like 5mm on the bottom.
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Old 04-21-2013, 01:26 AM   #10
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One cannot clock the turbine as its directly attached to the manifold.

I will try what Stephanie said once it stops raining since its like the rapture out there.
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Old 04-22-2013, 04:00 AM   #11
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So today i found the problem. Its rattling against that pipe that connects both sides of the subframe. Any reason keep it or can i get rid of it?

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Downpipe rattling against the subframe.-rwd-drivetrain-miata-bottom-view.jpg  
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Old 04-22-2013, 09:14 AM   #12
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Quote:
Originally Posted by ACiFiC View Post
maybe if you cushioned it with something like a bunch of heat wrap or something fire resistant.
Stop posting.
Quote:
Originally Posted by aaronc7 View Post
I would try throwing some heat wrap around it as well, might make it tolerable....
You're an idiot too.

you either shim the engine mount or you sent it back to BEGi to get it fixed.
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Old 04-22-2013, 02:23 PM   #13
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Quote:
Originally Posted by triple88a View Post
So today i found the problem. Its rattling against that pipe that connects both sides of the subframe. Any reason keep it or can i get rid of it?

That's a pretty sweet image! Need to powder coat the control arms and subframe silver!!!

And I would keep that pipe. Could you perhaps use a couple of washers behind it to space down a bit?
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Old 04-22-2013, 03:58 PM   #14
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That is not my image. Was just a random image i found on google.

I was thinking about washers too.
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Old 04-22-2013, 06:21 PM   #15
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I have a BEGI-S SSSG downpipe that is also a hair away from that bar.
I'm going to add washers too.
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Old 04-23-2013, 01:23 AM   #16
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Well today i fixed it. I loosened the bolts on the turbo/dp. Used a C clamp to grip the flange and twist it and tightened the bolts. That gave me about half an inch or so.

Now that was done but noo i wasn't stopping there. I lifted it so i'mma beat the crap out of it at least for annoying me all winter. I took off the pipe on the bottom and had my way with it.

You can see the paint all gone from where it was rattling. The dp had a shiny spot on it too.


It has washers on each side so i took the washers from the passenger side and used them on the drivers side as well.
I also beat the **** out of the pipe, put it together and it looks quite dandy now.

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Downpipe rattling against the subframe.-p220413_1649_zps94cada29.jpg   Downpipe rattling against the subframe.-p220413_1709_zpsc8ca9ec5.jpg  
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Old 04-23-2013, 11:41 AM   #17
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BFH! BFH! BFH! ...
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Old 04-23-2013, 12:17 PM   #18
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If the down pipe hits that brace, the best thing to do is add some washers the brace mount or flatten the brace some. We just modify the braces here so there is adequate clearance.
Stephanie
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