I was looking at different x-pipe designs for a custom exhaust i'm going to get built. The thing I wondered is what design is better. Design one is a stamped shell, larger volume center it appears, a large open plenum really. This design looks just like the universal x-pipe Magnaflow sells, so i'm guessing it's a decent design. http://cgi.ebay.com/ebaymotors/SXP4-...Q5fAccessories
The internal pics of ^ are a little further down in the link.
On a side note- would I be wrong in thinking that longtubes, x-pipe, long 4" tips as dumps, and two 26" Power Sticks will sound good on a mild gen 1 350? I'm thinking it'll be very nice.
I dont think it matters to much. As they have a little bit different locations for inlets and outlets, I would go with whichever fits you car better. With that being said, I personally like the stamped shell one. Not exactly sure why, it just looks to give the exhaust gases more freedom to go where they want.
I dont think it matters to much. As they have a little bit different locations for inlets and outlets, I would go with whichever fits you car better. With that being said, I personally like the stamped shell one. Not exactly sure why, it just looks to give the exhaust gases more freedom to go where they want.
The Pypes and Flowtech are the superior (siamesed) design. The Magnaflow is a glorified H-pipe. The idea is not to allow the exhaust to go where it wants, but to direct it to be released to the other side since one side is filled with pressure and the other side is pressureless.
The Pypes and Flowtech are the superior (siamesed) design. The Magnaflow is a glorified H-pipe. The idea is not to allow the exhaust to go where it wants, but to direct it to be released to the other side since one side is filled with pressure and the other side is pressureless.
That's what I was thinking. Also, the stamped design's center section is the same whether you get 2.25", 2.5", or the 3" pipe version. Too much volume. With all that volume I wouldn't think that it can really get a good scavenging effect/vacuum and I would think it would lose velocity too. Now the decision for pipe size. I will go with 2.25" for sure if I can find a shop that will do mandrel bends for a decent price. Wouldn't smooth crush bent 2.5" be about the same as mandrel 2.25"? Just a desmogged '72 882 head 350. Performer manifold and baby cam in the future unless i go with patriot vortec heads. I'm also building for torque so y'all would go with 2.25" right?
The Pypes and Flowtech are the superior (siamesed) design. The Magnaflow is a glorified H-pipe. The idea is not to allow the exhaust to go where it wants, but to direct it to be released to the other side since one side is filled with pressure and the other side is pressureless.
Thats rediculous garbage you just made up off the top of your head My exhaust likes to go where it wants so I let it. I have neither of those posted above either
I dont think it matters to much. As they have a little bit different locations for inlets and outlets, I would go with whichever fits you car better. With that being said, I personally like the stamped shell one. Not exactly sure why, it just looks to give the exhaust gases more freedom to go where they want.
Sorry if I made you feel stupid, but here you go....
Quote:
Originally Posted by 01ssreda4
Thats rediculous garbage you just made up off the top of your head My exhaust likes to go where it wants so I let it. I have neither of those posted above either
That's what I was thinking. Also, the stamped design's center section is the same whether you get 2.25", 2.5", or the 3" pipe version. Too much volume. With all that volume I wouldn't think that it can really get a good scavenging effect/vacuum and I would think it would lose velocity too. Now the decision for pipe size. I will go with 2.25" for sure if I can find a shop that will do mandrel bends for a decent price. Wouldn't smooth crush bent 2.5" be about the same as mandrel 2.25"? Just a desmogged '72 882 head 350. Performer manifold and baby cam in the future unless i go with patriot vortec heads. I'm also building for torque so y'all would go with 2.25" right?
I would definitely go with 2.5" mandrel bent tubing. A 90 degree 2.5" compression bent pipe can be reduced to around 1" and the 2.25" mandrel bent pipe will hold you back especially in stock form. The smaller pipes (2.25) will not create more torque.
It was a joke asshat. My point was what the OP is debating is trivial. Whatever fits his setup best is what I would choose. Sound difference is neglible as well, although you will hear plenty of arguements about that too. I have run both X and H, all else being the same. Carry on
It was a joke asshat. My point was what the OP is debating is trivial. Whatever fits his setup best is what I would choose. Sound difference is neglible as well, although you will hear plenty of arguements about that too. I have run both X and H, all else being the same. Carry on
I would definitely go with 2.5" mandrel bent tubing. A 90 degree 2.5" compression bent pipe can be reduced to around 1" and the 2.25" mandrel bent pipe will hold you back especially in stock form. The smaller pipes (2.25) will not create more torque.
Do you have any proof of this??? It sounds like complete BS.
Do you have any proof of this??? It sounds like complete BS!
I am sure it would sound like B.S. to someone with your mentality and education. j/k
These are both 2.5" pipes bent at a 45 degree angle. They were both cut at the center point of the bend. The pipe on the left is compression bent and the pipe on the right is mandrel bent. Imagine what a 90 degree bend would look like!
I always heard as a generic rule of thumb that flow was cut down to 80% of original when using crush bends. Mandrel bends flow 95+% of original diameter.
I have a 350 making a whopping 200 or so horsepower but 310 ft/lb of torque. i'm trying to maximize torque. Factory exhaust was 2" off the manifolds into a 2.5" T, not even a y really. I posted here because the question was originally about an x-pipe and no one goes to the sbc section. I'm sure the ls1 guys have more experience with x pipes. I think i'm going with crush 2.5" and the flowtech x with medium power sticks and long tubes. Should sound alot better than it actually goes
X-pipe design 
01 SS Rally Red A4 #4987 
My exhaust likes to go where it wants so I let it. I have neither of those posted above either 
