I was wondering about how far back in the exhaust an x-pipe should be. I have heard people talk about using some kind of markings on a dual exhaust system and put it where it melts off to or something. The problem with something like that would be I am planning on doing it all at once. This means that I will have to decide where it goes before I run my exhaust. Any opinions would be appreciated.

Ben

 

Hmmm....
I'm tired of X-Pipes, H-Pipes, and Y-Pipes. I want 100% backpressure now! I decided I will just save up and get an O-pipe.

 

I WANT AN O-PIPE!!

:rockon: :sillylol:

 

I dont know where you got that picture, but as un helpful as it is it is kind of entertaining.

Ben

 

I think a guy named "TAZ" has an X-pipe on his ride. He has pics too.

 

A lot of people say that the x needs to be placed as closely as possible to the header collectors. However, Dr. Gas (who supplies exhaust to NASCAR, Busch, IROC, ARCA, Craftsman Super Truck, and Hooters Pro Cup teams) recommends putting the x pipe where it fits--with the x right after the tranny. Most of the x pipes for mustangs have the x right after the tranny also.

 

Ok, that is the kind of answer I was looking for. My problem is going to be whether If I get a universal x-pipe from dr gas, is whether I will be able to get oval piping under the crossmember without it being in one of the bends. I guess I will find out.

Ben

 

Well, that would be an interesting take on the conventional cross-pipe.

 

I seriously think that crossing the X pipe and O pipes together in a 3x3 pattern is a better idea.

 

hehe where to put the x-pipe

gotta love this question cause it can be a very hard one to answer

[Start rambling]

to fully explain this one you would kinda need a little bit of an understanding of sound/pressure waves and how they will change the powerband of a car.

when your exhaust port opens up you now have a high pressure sound wave that enters your exhaust, when this high pressure zone hits an area that changes in volume like your collector, tip, or anything else even this x-pipe you are talking about, that high pressure zzone will then turn into a low pressure zone and head back twords the exhaust port. as we all should know by now (least I hope so) pressure in the exhaust system is evil, and so when this low pressure zone hits the exhaust port as the spent A/F is leaving your cyl it makes kinda a vaccume to help suck the spent mixture out which will leave more space to get more fresh air/fuel into the cyl. also when this low pressure zone hits the exhaust port since it also has a different volume it will then turn into a high pressure zone which being behind your exhaust gass will help push it out.

so how does all this help you out.... um don't ask me that I am not sure yet, but the further from your exhaust port you put the x-pipe will make your power a little stronger in the low rpm range while the close to your exhaust port you put the x-pipe the high up in the rpm range you are going to get a boost.

now this is kinda just a nutshell version of how sound/pressure waves work and there are other things that can make where to put the x-pipe change.

also since your collector will also put out a reversion wave (wave that changes direction and will go from high pressure > low pressure or vise-versa) and it can conflict with the reversion wave your x-ppipe puts out and kinda cancel the effect.

the only thing I have heard to do though not sure on how efffective it is will be to put your x-pipe an equal distance from your collector as your collector is from your exhaust port. that way the the sound waves do not cancel each other out but instead amplify the effect.


[/End Ramble]

no matter where you put the x-pipe though you will be a lot better off with one on a true dual setup then without one since even not taking into effect the whole pressure wave thing they still have a good effect on scavaging the spent exhaust through a very wide rpm range

good luck with whatever you decide to do though

 

I saw a universal x pipe in jegs and i was wondering if we could use it on our cars. `Im sure it would make more power and sound better than a single 3'' anyday...probably takes away some ground clearance tho.

 

I have heard of people using that one. Also look at www.drgas.com Yes you will probably loose ground clearance, but how much depends on how much time and effort is spent on detail and planning.

Ben

 

i may still look into it since i dont plan on lowering the car any more than it is. WV backroads are pretty rough. i live in the city but still...plus i somehow smashed my y pipe when my suspension was bad.

 

I beleive i saw read this or sae it on hotrod tv. what you do is spray some cheap paint on the pipes, and start the car up, where the paint cooks off/or turns blakc first is whee to put the h or x pipe. where it gets the hottest first. but that can not allways be done, but try to get it close to that area.

 

 

I would already have to have duals to do that. I am going to design my exhaust around the x-pipe so that wont be possible. I had heard about doing it that way before too.

Ben

 

Here is a pic of an X-pipe.

 

sorry had to change to jpeg: lets try this again, here you go.

 

DTL504, you don't just HAPPEN to have a sound file of your exhaust do you???

I would REALLY like to hear what that sounds like!

I used to have (don't shoot me!) a 79 Mustang that had later model factory headers, H pipe, and Purple Hornies with turn downs, similar to the way yours looks, and it sounded bad as hell!!!
Luckily, I was able to trade that car, needing a valve job, for the 83 T/A I have now, so it wasn't a total waste!!

 

This was a picture that was sent to me when I ask about the X-pipe, sorry this is not my setup.

 

Like Momar said, that is a stupid test because it requires that first have a complete exhaust system.

Anyway, what I actually wanted to say is that you should really try to use a crossover--power/torque gains aside, you really want to hear all 8 cylinders from each pipe.

 

I know, I have that pic on my hard drive along with a couple others from that car and a video of it. It is a 97 Camaro SS. My question was more of if anyone knew how far back I should put it for the best power, but I may just have to put it where space will allow anyway.

Ben

 

Try this link here for all your X- pipe needs:
http://www.drgas.com/street-cat.html

 

Yes, that is where I plan on buying it. I already have all of that figured out. Like I said I was just asking about positioning.

Ben