Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

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Old Dec 11, 2009 | 03:30 PM
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Default Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

I want to know because I'm in the market for at least a 2.5 exhaust (before you bash hold your horses). I plan to use just the piping and mate it to a "real" high-flow muffler. So I'm basically trashing the muffler and tip and using the ebay cat-back as a "pre-bent piping kit".

Most of the exhaust on ebay claim to be T-304 Stainless Steel, so I don't have to worry about rusting. I can get a 2.5in SS ebay cat-back for like $150 shipped. VRS (http://www.vrsexhaust.com/TUBING_KIT.../honda_tk.html) sells their 2.5 SS piping kits for $175+shipping. So I'm saving there. Most local muffler shops don't mandrel bend pipping around me or use SS for exhausts, so I can't get a nice mandrel bent exhaust local (except one place and they are talking about $500 just for the piping and labor with me providing the muffler LOL). In addition, most aftermarket "name-brand" exhaust are 2.25in for our cars anyways, except for Skunk2 (which I had a few years ago and I don't like the canister style anymore), Thermal and maybe a few others, and they are big $$$.

With that being said, are 2.5in ebay exhaust truly 2.5in inside diameter? Also, what is your opinion on what I'm trying to do? See any flaws I am not considering? I'm not trying to be a cheap ***, just looking for a cost efficient solution to solve my problem of not having a mandrel bent 2.5in exhaust. Plus, it's just piping, right? I know I may take a chance on piping thickness and welds, but hopefully it shouldn't bite me in the *** too much, right?!? Suggestion? Thanks!
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Old Dec 11, 2009 | 03:45 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

They probably aren't. Ask one of the sellers to confirm i.d. I'd personally go with VRS

Last edited by .Manny.; Dec 23, 2009 at 01:41 PM.
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Old Dec 11, 2009 | 05:05 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

I got mine off ebay...its mandrel bent and stainless steel. had it for abaout 3 yrs now and still looks and works very good. no rust. Change the tip since i dont like large tips. other than that i had no problems and cops dont bother me since its quiet.
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Old Dec 11, 2009 | 07:39 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

^^^ What diameter is the piping?!?
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Old Dec 11, 2009 | 09:11 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

probably 2.5" OD
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Old Dec 12, 2009 | 12:42 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

They are really close to 2.5. I ran one also. Not to terrible.
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Old Dec 12, 2009 | 06:04 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

Originally Posted by beansandrice
They are really close to 2.5. I ran one also. Not to terrible.
Thanks! Do you remember the seller?
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Old Dec 12, 2009 | 06:46 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

I doesnt matter on the seller just look for the lowest shipping price. They all come from China. and The chinese use the Same JIG's for setting these fart cannons up.

Not knocking China. Greddy, Apexi and skunk2 have some stuff made out there
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Old Dec 13, 2009 | 10:04 AM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

Originally Posted by frank_el_tanke
probably 2.5" OD
piping is measured in ID
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Old Dec 13, 2009 | 03:40 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

Pipe - ID
Tube - OD

Correct but this is Exhaust TUBING. OD is the measurment.
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Old Dec 23, 2009 | 10:50 AM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

I went ahead and ordered one and it came in this morning. The piping inside diameter is "slightly" smaller then 2.5in except behind the resonator where it's almost just "slightly" above 2.25in. Overall, I guess I'm satisfied (but not HAPPY), but since it was only $130. I'll make it work. Thanks for all the inputs.
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Old Dec 23, 2009 | 02:20 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

gotta watch out for some of those ebay exhausts, my friend got a 2.5 catback for a da and one of the bends was like 1.75 hahah.
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Old Dec 23, 2009 | 04:29 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

Originally Posted by GroundZer0 336
gotta watch out for some of those ebay exhausts, my friend got a 2.5 catback for a da and one of the bends was like 1.75 hahah.
LOLOLOLOL


I was actually kinda impressed with the exhaust. The only problem was the muffler had two dents on the top and on the side. I would of been pissed if the intent was to use the exhaust as-is, but it's not bothering me much since the intent was to use it was a piping kit.

Pics








The axle back portion was nearly 2.5in I.D. with the midpipe being slightly smaller (but much larger than 2.25in)
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Old Dec 23, 2009 | 05:20 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

How much do you want for the muffler shipped to 94949? It looks like it would be quieter than my skunk2 exhaust. Pm me.
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Old Dec 23, 2009 | 11:32 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

i believe the obx and the tsudo are 2.5. and the other im not sure. someone correct me if im wrong
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Old Dec 24, 2009 | 08:09 AM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

the tsudo n1 exhaust i got from ERZ is 2 3/8" id, sold as a 2 1/2".
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Old Dec 22, 2010 | 07:03 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

I looked at alot of reviews of this exhaust and decided for $100 a header and exhaust is okay so I ordered mine yesterday, when I get it I will tell you guys the sizing aswell as post pics and maybe a video of the sound, hopefully not too raspy
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Old Jan 11, 2011 | 09:12 PM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

May not be the best thread to post to but, I ended up in the situation where I needed a 2.75" exhaust. 2.5" was to small and 3" was to large. So I had tubes mandrel bent and I welded up a home built custom test pipe / cat back exhaust see links below for picks.

Yes I'm very particular and wanted everything SS and Smooth bents were mandatory.

I searched long and hard for SS good performing 2.75" mufflers and resonators with no success so I reluctantly went with 3".

Over view picture:

http://lh5.ggpht.com/_6WNP5qcAE-k/TE...-58-32_796.jpg

Exhaust on the car: (yes it had to have twin tips to keep slightly modified stock look I was going for)

http://lh3.ggpht.com/_6WNP5qcAE-k/TF...-53-42_585.jpg

Stock vs Custom:

http://lh5.ggpht.com/_6WNP5qcAE-k/TE...-27-12_871.jpg

http://lh6.ggpht.com/_6WNP5qcAE-k/TE...-27-23_709.jpg


I know this exhaust is good for 246 whp @7800 and 174 TQ @ 4800rpm on n/a fully built ls vtec because that's what the car dynoed at :-)
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Old Oct 15, 2012 | 09:04 AM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

Originally Posted by CrimsonRX
May not be the best thread to post to but, I ended up in the situation where I needed a 2.75" exhaust. 2.5" was to small and 3" was to large. So I had tubes mandrel bent and I welded up a home built custom test pipe / cat back exhaust see links below for picks.

Yes I'm very particular and wanted everything SS and Smooth bents were mandatory.

I searched long and hard for SS good performing 2.75" mufflers and resonators with no success so I reluctantly went with 3".

Over view picture:

http://lh5.ggpht.com/_6WNP5qcAE-k/TE...-58-32_796.jpg

Exhaust on the car: (yes it had to have twin tips to keep slightly modified stock look I was going for)

http://lh3.ggpht.com/_6WNP5qcAE-k/TF...-53-42_585.jpg

Stock vs Custom:

http://lh5.ggpht.com/_6WNP5qcAE-k/TE...-27-12_871.jpg

http://lh6.ggpht.com/_6WNP5qcAE-k/TE...-27-23_709.jpg


I know this exhaust is good for 246 whp @7800 and 174 TQ @ 4800rpm on n/a fully built ls vtec because that's what the car dynoed at :-)
nice homemade setup. how is the exhaust tone/rasp with it?
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Old Oct 15, 2012 | 09:45 AM
  #20  
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

ebay exhausts arent bad. its mainly the welds that are bad. (header for example, just go back over the welds. lol.) just bc something is cheap dont mean it wont work.
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Old Oct 15, 2012 | 09:54 AM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

old thread people...
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Old Oct 15, 2012 | 10:45 AM
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Default Re: Are 2.5in CRX/EF Ebay Exhaust truly 2.5in ID? I need just the piping.

Originally Posted by spcrxracer
nice homemade setup. how is the exhaust tone/rasp with it?
The last time the guy you were asking has been on this board was
Last Activity: 04-30-2012 09:39 PM

Good luck getting an answer.
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