Fabbing Y pipe. Are twin 2" pipes enough?
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Fabbing Y pipe. Are twin 2" pipes enough?
Hi all.
Just about to fab a Y pipe from my shortie headers (unknown origin). I want to make 2 pipes to meet at the cat (long gone by the way), then join it to my 3" I pipe. Is a diameter of 2" enough from each header? What do you guys think? I'm scraping everything at the moment, so this needs tucking in well.
Thanks for any reply.
Andy.
Just about to fab a Y pipe from my shortie headers (unknown origin). I want to make 2 pipes to meet at the cat (long gone by the way), then join it to my 3" I pipe. Is a diameter of 2" enough from each header? What do you guys think? I'm scraping everything at the moment, so this needs tucking in well.
Thanks for any reply.
Andy.
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I'm no expert, but..
well a 2" pipe will have 3.14 sq. inches of flow. Times by 2, you get 6.28. A single 3" pipe will have 7.07 sq. inches of flow. I think using 2" pipes will be a bit of a bottleneck. Maybe use 2-1/4" pipes?
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Car: 91 camaro rs
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Thanks for the reply guys.
Space is tight because of the SFC's and the constant scraping going over any bump.
I have just bought a pipe bender that goes to 2 and a 1/4" at a push. So I am going to try large first and see how it goes. I will post some pics as it is going along.
By the way, what coatings do you all use on the Y pipes. I don't want to ceramic coat at this stage, so what is successful? I don't want it to look like a rusty hulk in 12 months time
Thanks again.
Andy.
Space is tight because of the SFC's and the constant scraping going over any bump.
I have just bought a pipe bender that goes to 2 and a 1/4" at a push. So I am going to try large first and see how it goes. I will post some pics as it is going along.
By the way, what coatings do you all use on the Y pipes. I don't want to ceramic coat at this stage, so what is successful? I don't want it to look like a rusty hulk in 12 months time
Thanks again.
Andy.
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Originally posted by norcalz28
My hedman y-pipe uses 2.25" pipes off the headers and meets a 2.75" pipe where the cat is. It is tight, but even with the exhaust clamp inplace, it doesn't hit the oil pan. You should be alright. I wouldn' go smaller than 2.25", that seems to be pretty standard,
Will
My hedman y-pipe uses 2.25" pipes off the headers and meets a 2.75" pipe where the cat is. It is tight, but even with the exhaust clamp inplace, it doesn't hit the oil pan. You should be alright. I wouldn' go smaller than 2.25", that seems to be pretty standard,
Will
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I was thnking about having mine welded in as well, once everything settles in and what not. I had a hell of a time installing it as space was tight in the garage and I had pushed the piece off the pass side header too far into the y-pipe and I have to pull it back out and hold it while I attempted to thread in some bolts. But it does puff just a little right there so I may have it welded yet.
Will
Will
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