Test pipes?

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solaire
Posts: 161
Joined: Sun Mar 02, 2014 1:00 pm

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Are the converter pipes (test pipes) the same for turbo and n/a? They look the same with the same flange the only difference being the turbo has a small downpipe that goes from turbo to test pipe. I cant seem to find some NA test pipes but I found this

http://www.ebay.com/itm/Turbo-Down-Pipe ... 40&vxp=mtr


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t.mcginley.jr
Posts: 1547
Joined: Fri Jun 01, 2012 5:50 am
Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang
Location: New Jersey, USA

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Do you have an NA or TT? That ebay ad is only for a TT.

On an NA, the midpipes angle up on an NA to meet with the exhaust manifolds whereas on a TT, each turbo has a downpipe that comes down and meets with the midpipes. Test pipes are the same as midpipes except without cats. There are NA test pipes with/without cats, but they are usually sold out, on back order, or just expensive as hell.

Here is one of the only sets I know of, not sure if they are in stock or not:

http://www.meganracing.com/products/pro ... uct_id=295

There's also a thread on here where someone bought cheap TT test pipes for ~$100 and just welded on the necessary angled part to make it fit an NA. Just a thought.

solaire
Posts: 161
Joined: Sun Mar 02, 2014 1:00 pm

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That's what i was wondering. The angle on the midpipes where they meet the turbo downpipe (TT) and header (NA) looked to be the same angles but maybe they aren't.

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t.mcginley.jr
Posts: 1547
Joined: Fri Jun 01, 2012 5:50 am
Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang
Location: New Jersey, USA

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TT test pipes:

Image

NA test pipes:

Image

Notice how much more curved the NA test pipes are at the end? That's the only difference really

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t.mcginley.jr
Posts: 1547
Joined: Fri Jun 01, 2012 5:50 am
Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang
Location: New Jersey, USA

Post

Here's the thread I was talking about where the guy modded some TT test pipes to fit his NA, overall a pretty cheap way to do it but with good results:

the-cheap-ebay-exhaust-picture-filled-t563822.html


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