y pipes ?

[Nes]

hi... anybody tried a y pipes setup instead of the middle x .. i feel loss of pressure since i installed my borla 125s .. any suggestions ?

[Spali32]

Just wondering why you trying to reinvent the wheel?? There's been alot of research and engineering done by the exhaust companies. My Borla 125's run just fine. I didn't feel a loss of power, if anything it was a gain of power.

[arfur]

hi... anybody tried a y pipes setup instead of the middle x .. i feel loss of pressure since i installed my borla 125s .. any suggestions ?

I can see absolutely no technical reason to want to do that. Are you talking about back-pressure? Not really needed in these engines anyway - and I can assure you that the cats are creating the biggest restriction anyway!

[broc2238]

hi... anybody tried a y pipes setup instead of the middle x .. i feel loss of pressure since i installed my borla 125s .. any suggestions ?

Are you wanting go down to a singe exhaust pipe then? That would really hinder performance. Trust me everybody with an F-Body wants to get rid of their y-pipe in leiu of true duals because of the performance benefits. Let me ask seriously if you know what a y-pipe is, because I've seen this question on some other boards in the past and the person asking didn't really know what the difference between a y-pipe, h-pipes and x-pipes. If that's the case then that's where you should start.

[Nes]

i know the diffrence .. thanx for the feedback though

[broc2238]

i know the diffrence .. thanx for the feedback though
I thought you might, just had to verify. What I have heard about Y-pipes is that they may increase your low end torque by just a little bit, but I don't believe that on these cars would be very noticable, I;m also pretty sure that top end performatnce would suffer some though going that route. You never know for sure unless you try though

[Nes]

i thought of trying them out .. but did alot of reasearch .. and from you guyz doesnt seem like a fine idea .. ill stick with the x .. thanx alot

[tridom]

Are you wanting go down to a singe exhaust pipe then? That would really hinder performance. Trust me everybody with an F-Body wants to get rid of their y-pipe in leiu of true duals because of the performance benefits. Let me ask seriously if you know what a y-pipe is, because I've seen this question on some other boards in the past and the person asking didn't really know what the difference between a y-pipe, h-pipes and x-pipes. If that's the case then that's where you should start.
Ok....I'll admit ignorance! What are the differences? I've been trying to figure that out. Why do I have an x-pipe that comes together when I've got dual exhaust? (never been very savvy about exhaust systems).

[Griz]

Ok....I'll admit ignorance! What are the differences? I've been trying to figure that out. Why do I have an x-pipe that comes together when I've got dual exhaust? (never been very savvy about exhaust systems).

This shall show you the light...

http://www.mustangforums.com/m_1028601/tm.htm

Griz

[tridom]

This shall show you the light...

http://www.mustangforums.com/m_1028601/tm.htm

Griz
OOOOoooooo........don't know if I want to click on THAT link. Its got a curse word in it (mustang)! :lol:

J/K- thanks!

[tridom]

Ok...I went ahead and read it despite the curse word.

Very informative article Griz! Thanks for posting it for me. I am now enlightened about exhaust systems. Recommended read for all who are wondering!

[arfur]

Ok....I'll admit ignorance! What are the differences? I've been trying to figure that out. Why do I have an x-pipe that comes together when I've got dual exhaust? (never been very savvy about exhaust systems).

The names of the pipes are self explanitary. The reason for joining the two banks of the engine is to do with the potential tuning effects that can be utilised to help engine performance - specifically engine 'breathing'. In the induction system (the intake manifold) it is possible to 'pressure wave tune' the incomming charge of air to the cylinders.

As this engine has been designed to be naturally aspirated (no blower/turbo) the amount of gas that actually makes it into each cylinder during an induction stroke will be greatly affected by the restrictions in the intake system - the manifolds and intake valves/valve seats etc. However, without forced induction, it is possible to use pressure pulses within the inlet tract to help force a little more air into a cylinder during the duration of intake valve opening - which increases the engines volumetric efficiency. If you increase the volumetric efficiency of the engine, you can add the optimum amount of fuel. More fuel = more power for a given engine condition. The pressure wave tuning results (during a certain engine rev band) that a peak of pressure within the air hits the back of the inlet valve as it opens. This results in the air being 'helped' in due to the extra impetus in the gas. The rev band when this effect is of use is fixed by the length of the inlet tract.

The same is true for the exhaust system, which can also be pressure wave tuned if I remember it correctly. The pressure waves will bounce off and around the inside of the system from the manifolds to the exhaust tips. By joining the two banks of cylinders, it is possible to get pressure pulses at several times throughout the engine rev range. However, unlike the peak of a pressure wave hitting the back of the exhaust valve (as with the inlet) you want the lowest pressure part of the wave in the area of the exhaust valve as it opens. This reduces slightly the resistance that is on the escaping exhaust gasses - it aids the emptying of the cylinder - sometimes called scavaging. As a high pressure charge from bank one shoots past the X or H to the other bank, the resulting low point helps draw gasses from the next opening cylinder on bank two. This process flips backwards and forwards throughout the system, with each bank helping the other as necessary. This is a very simplistic explanation, and may not be 100% correct - but it's something along those lines. There are many pages on the interwebnet that discuss pressure wave tuning of the intake and exhaust if you really want to explore the subject.

HTH! :)

[tridom]

Dang arfur- you almost sounded smart there! If I didn't know better.....:lol:

J/K- thanks! I am now sooooooo checked out on exhaust! Think I'll go get a job teaching it! :lol:

[arfur]

Dang arfur- you almost sounded smart there! If I didn't know better.....:lol:

J/K- thanks! I am now sooooooo checked out on exhaust! Think I'll go get a job teaching it! :lol:

LOL - my head hurts.... :)