Can the y pipe from racingline fit on a 2.5s???

All things Altima Coupe.
Frostie
Posts: 5
Joined: Wed Apr 29, 2015 1:41 pm
Car: sliver Altima 2012

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i was wondering could the Y pipe from racingline fit on a 2.5s engine??? If not why doesn't and what could i do to make it fit on my car! i would love to get this on my car some how


VTMike24
Posts: 103
Joined: Wed Dec 31, 2008 5:02 am
Car: 2008 Altima 3.5 SE 6spd

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y pipe is for v6 only.

Frostie
Posts: 5
Joined: Wed Apr 29, 2015 1:41 pm
Car: sliver Altima 2012

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I know that I was wondering why??? and could it fit on a 2.5??? because wouldn't the piping be the same length?? so my question is what would I need to do to fit it on my car??

BigBuffalo
Posts: 45
Joined: Wed Jul 23, 2014 3:53 pm

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Fair warning I'm only like 95% sure this is correct.

The 2.5 is an inline 4 and the 3.5 is a V6. On the 2.5 there is 1 header that connects to part of the exhaust.
On the 3.5 there are 2 headers that come down to connect to the y-pipe and then to the rest of the exhaust. I believe that is why its called a "y-pipe". Because its taking 2 inputs from the headers and combing the flow into 1 singular pipe to the rest of the exhaust.

Frostie
Posts: 5
Joined: Wed Apr 29, 2015 1:41 pm
Car: sliver Altima 2012

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ohhh ok I see thank you

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BamaCoupe
Posts: 316
Joined: Fri Dec 19, 2008 1:52 pm
Car: 2011 G37 Coupe
Location: Huntsville, Al

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Stillen Makes a header for you 2.5'ers

Frostie
Posts: 5
Joined: Wed Apr 29, 2015 1:41 pm
Car: sliver Altima 2012

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BamaCoupe wrote:Stillen Makes a header for you 2.5'ers
so does that mean if I get the header I could get the y-pipe??? :biggrin:

BigBuffalo
Posts: 45
Joined: Wed Jul 23, 2014 3:53 pm

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No. It will only upgrade the 1 header you have. It won't give you another header.

If you want to upgrade your exhaust system look into a cat-back exhaust.

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BamaCoupe
Posts: 316
Joined: Fri Dec 19, 2008 1:52 pm
Car: 2011 G37 Coupe
Location: Huntsville, Al

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I'll try to explain this as nice and simple as I can. You have a 4 cylinder, which means you have one head and one exhaust manifold. This exhaust manifold has FOUR pipes (One per cylinder) coming off the front side of the head, from the exhaust manifold all four pipes merge into one pipe and this pipe goes by several names but usually called a down pipe or the runner. V6's have two heads as opposed to one like your car, which means we have two exhaust manifolds (for the 3.5 V6 there are three cylinders per head). An exhaust header (singular) are for inline engines (4 cylinders, inline 6); one head, and exhaust headers (plural) are for V configuration engines with two heads. This y-pipe is made for the V6 which is made to have two exhaust manifolds bolted to it. Will the front flange on this y-pipe bolt up to your exhaust manifold? Probably not, but if it did you would probably output more than half the exhaust into your engine bay where the back exhaust manifold is supposed to bolt up unless it's flanged off. Even if it did bolt up and again I doubt it would it would be very restrictive and would not be the most efficient way to output your exhaust. That's why I brought up the header from stillen for the 2.5's; it's a direct bolt-on with no modifications required, it would replace the exhaust manifold and down pipe (and possibly deletes the catalytic converter), it's a lot less restrictive than your factory setup and honestly less restrictive than a V6 with this y-pipe.

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SanoSuKe
Posts: 1704
Joined: Wed Nov 02, 2011 8:26 pm
Location: New Jersey

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Yeah, BamaCoupe pretty much explained it very well. The short answer is no, the detailed answer is one post above. :)


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