Dual Exhaust

[Woody-200]

I got Dual header for I`m 65 200 6cly I was trying to fine some Pictures of some exhaust pipe set up, I would like to use 2 1/4" pipes and Flow Master mufflers. Any help would be appreciated.. Thanks Woody

 

[David_Conwill]

What are you putting it on, Woody? A Falcon, a Mustang, a Fairlane...?

-Dave

 

[Woody-200]

I`m putting it on a Mustang coupe 65

 

[MPGmustang]

just a reminder, dual 2inch pipes are best for (IIRC) +250hp, we're maknig half that unless you force yours. too much and it can hurt HP...

I know this, but I still have dual 2 inch, I like the note. bigger pipe would be a lower note, and harder to keep quiet. a smaller pipe the higher/quieter note and easier to keep quiet.

I have dual out on my 65 mustang, you can see some pics in my video from my sig. not much on exhaust though. sry

 

[1961 Futura]

just a reminder, dual 2inch pipes are best for (IIRC) +250hp, we're maknig half that unless you force yours. too much and it can hurt HP...

Not to hijack, but how much smaller could you go without choking the engine? I have big pipes on my V8 car, and they sound great, but skinnier pipes look a little better to my eye.

-Dave

 

[64falconsix]

just a reminder, dual 2inch pipes are best for (IIRC) +250hp, we're maknig half that unless you force yours. too much and it can hurt HP...

Not to hijack, but how much smaller could you go without choking the engine? I have big pipes on my V8 car, and they sound great, but skinnier pipes look a little better to my eye.

-Dave

With 200 cubes duals 1 7/8" for stock to lightly modified or 2" for a hot street motor. This recommedation comes from both Clifford performance and Magna flow for naturaly aspirated engines

 

[powerband]

For reference, there's longtube dual out headers on my two Falcon Six cars . I used simple store bends and various mufflers. 2" is fine for duals, any exhaust restriction would effectively be halved using original (1-7/8?). .

Flex fittings and removable SS bandclamps help later (inevitable) R&R for more mods and fun, ' still looking for easy over-the-axle dual pipe set application for early cars...

Have Fub






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[Woody-200]

I guess I should have stated that the engine is Bored .040 over,Hi-Po Cam. So maybe 2" pipes would work fine. Just don`t what a high pitch rasby sound . Thanks Again, Woody

 

[Gene Fiore]

Here is the setup I have on my Maverick...but I had this done by a muffler shop. These are 2 inch pipes and Magnaflow turbo mufflers...it has a nice throaty sound at idle and no drone at cruising speed.

 

[bucfan1234]

Mine is very similar to that except I used an X pipe closer to the collectors in place of the H pipe along with Thrush Turbo mufflers. Had my local exhaust guy custom bend it and weld it together. He then mounted it to the factory mounts.

The car has a great deep sound, but is not overly loud. It also doesn't drone like my flowmaster on my jeep.

 

[ozconv]

I installed a 2" V8 mustang system with flowmaster 40s on mine and made my own custum 2 1/4" x-pipe using a universal kit from JEGS (they didn't have anything smaler than 2 1/4". It migh be a little bit too loud with the flowmasters although I am still tuning and trying to get the idle down. It is definitely NOT high and raspy though.
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ozconv

 

[chad]

Boy, now U guys R really on a topic that eludes ME. Plus the "personal taste" issue & difficulty describing a sound - all come into play...

I heard bout the 'back pressure' falicy v scaveging need and long tube v shorties. Pretty esoteric to this hacker.
For the tq I seek (not HP) AND the sound, I understand the shorties are the choice, and to use the 3X2 to 1 (all @ 2 inches even) with 1 of those mufflers that have a tube w/holes in it, inside the outter case rather than the "double chambered" style? Is that right? Again want the 250ci with top tq and a nice burble when engine brakin down a hill. Nothing loud to "draw the man" but a lill rap would B pleasurable 2 me. (not camed up & 1V motor ). Some 1 on here (I think it wuz) mentioned the $28 Johnson turbo tube (my kinda price!).

Thanks for the input, (U guys R great) may we all find our pleasure on the 1st try...

 

[bubba22349]

I like the sound of a turbo (though some don't flow as well as others) is nice mellow sound also a glass/steel pack muff been using them both a long time. For a stock or mild motor a 2 inch is about right for good low end torque.

 

[chad]

I like the sound of a turbo (though some don't flow as well as others) is nice mellow sound also a glass/steel pack muff been using them both a long time. For a stock or mild motor a 2 inch is about right for good low end torque.

Yes, I believe it's stock (looks rebuilt tho). Ah, good, I may (w/every 1s help) have it designed now). Sounds (pun intended) like turbo is quieter than glass packs? and that 2 inch shorties (that sz all the way to tail) and 1 muffler would B good for tq and "not too loud' (a judgment of course)? Might as well get it right - I need the whole exhaust system...
Thanks bubs!

 

[Woody-200]

I would like to thank everyone for your input. I now will be going to 2" pipes w/x-pipe. The pictures are a big help.You all been great ..Thanks Again....Woody

 

[bubba22349]

Your welcome chad, with a single exhaust for your 250 you might be able to go up to a 2 1/4.

 

[chad]

Your welcome chad, with a single exhaust for your 250 you might be able to go up to a 2 1/4.

Bubba all ways comes thru...

Roger, so shorties, and 2 1/4 from the collectors (when they get to 1 pipe) back to the muffler and beyond?

Think I got it now (max tq).

Thanks again,
'Jack-a-thread Chad' (pretty close tho)

 

[64falconsix]

Here is a good reference chart for exhaust sizing. http://www.magnaflow.com/07techtips/faq/question10.asp

 

[powerband]

I'm not claiming any expertise but oversize exhaust pipes has me puzzled, especially with loud opposite responses in related forum . Will too large exhaust actually affect a street RPM range engine?. Every time someone mentions exhaust systems , an often-posting member cautions about losing all low end with more free flowing exhaust with others repiying that 4 stroke engines can't use back pressure or standing wave chambers at typical comparatively low RPM range?.

Have Fun


simple is as simple does..

 

[64falconsix]

I think the issue with low rpm torque loss or gain is not from backpressure but exhaust velocity helping to scavenge the spent gases. Kind along the line of intake and port sizing. Larger ports= peak torque and power at a higher rpm.