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Ebay downpipe question

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i think you answered your own question. i know on my 97 gsx the nuts were rediculously close i had to use a crows foot to tighten them. but denting the pipe a bit would save alot of head aches
 
It is the exact same as punishments down pipe. You can either dent it, or if using a aftermarket o2 housing you can weld the nuts on that to start threading the bolts. The reason why its hard to thread it is because its a true 3 inches. So no its not ebay crap :)
 
I would still buy from a vendor, less likely to have problems, after owning my dsm i use things already proven, not just maybe it will fit, its my money not taking chances.
 
If you mate a true 3" pipe to a O2 housing that is far from 3" the bolt spacing is going to be close. It doesn't mean the downpipe is crafted crappily. A pipe is a pipe. A DSM downpipe has got to be the easiest pipe to make.
 
With some searching I think he consensus is that they don't make a full 3" o2 housing. You can have one made, bit wouldn't even know what a close price would be.


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I know VRS makes a 2 bolt 3" O2 housing but I've also read guys are running 2.5" O2 housings with 3" downpipes (in/out).
 
Ebay stuff is hit or miss. You have to really watch what company you buy from. I had a full ebay exhaust on my first gst. The exhaust sounded nice and deep and the downpipe bolts fit just as well as they should.
 
I got an ebay full 3" downpipe that looks like the one in the OP's link. It's surprisingly good quality for the price. It wouldn't fit up to the o2 housing so I got an ebay o2 housing and they fit together nicely. I think I only paid $60 for the o2 housing with shipping. That's been a few years back though. I believe they're a little more expensive now.
 
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