tail pipe size?

Joined
May 28, 2004
Messages
98
Location
Tallahassee, Fl
 
Today I had a new tail pipe welded on from the muffler back.
My other one rusted so I had it replaces.
Well my old one was like 2.5" and my new one is smaller MAYBE 2" could be smaller.
Would this make my truck slower of the line? Should I go through the trouble of having it changed to a 2.5" tail pipe?

What are you guys running

Thanks
 

Tapage

Club 4X4 Panamá
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Joined
Apr 4, 2003
Messages
23,531
Location
Panamá
 
 
 
if you change your total exhaus line, from 2.5" to 2" now you can get more advantages from your engine torque.

Now you have more restricted your exhaust, geting more backpresure. In the other line, in the other line, you maybe need more time ( seconds ) to get up your RPM's ..
 
Joined
May 28, 2004
Messages
98
Location
Tallahassee, Fl
 
Shoudl I make them change it to 2.5? Does back pressure cause more torque?
I always thought the less restriction the faster the motor would spin
 
Joined
Apr 20, 2005
Messages
19
More torque means more strain on our old engines. I think 2.5" is a happy medium allowing more breathing room without losing a lot of back end pessure. You can always adjust your idle to help you off the line. I just upgraded to 2.5" pipe from the headers back and couldn't be happier! Just my .02.
 

Tapage

Club 4X4 Panamá
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Joined
Apr 4, 2003
Messages
23,531
Location
Panamá
 
 
 
panama said:
Shoudl I make them change it to 2.5? Does back pressure cause more torque?
More ( but not close the exhaust line jejejeje ) backpresure supply en general lines more skill to the engine to get more torque.

In a racing car, or a really big blok engine, when you up your RPM's , you don't need torque, or need less .. in this moment the power HP user the total amout of rpm's to move your car.

Realy the theori is more complicated, but here are some general lines ..
 
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