no pipes/straight pipe does damage???

do u smell the exhaust in the cab real bad?? or is the smell noticeable??

 

you wouldn't notice it driving, but idling, your going to get some. guaranteed.

never dump exhuast under cab with any dd vehicle. just not a good idea.

i (without any first hand experience) doubt that headers will help you much at all. save some money, and just cut the factory muffler off and replace it with something you like. run some tailpipe to dump in a concealed location under the bed.

most brap for your buck

 

Don't smell any now, didn't when I had it under the cab.

 

I have somewhat of the same set up.....except mine is turned down at the rear axle.

 

If only I had the same lift and tires you had!

 

Yours looks pretty badass as is Weston!

 

Thanks man! but I'm workin for a 6" lift, wheels, 35's, and re-gear at the moment. Itll be a while

 

I was referring to NO headers or manifold... just open exhaust ports.
That'll warp valves.

People have run open long tube headers on hot rods for a couple of generations and it's not damaging.

Hey, sometimes life gets in the way of life. When you had plenty of spare time, you were able to put together some very informative projects.
Now you're entertaining as hell

 

Carbon monoxide has no smell.

 

Two different things.

Scavenging is when the length of the header tubes cause the exhaust pulses to align and an outgoing pulse into the header collector (expanding diameter) assists in drawing the following pulse out.

Backpressure is in a 2-stroke tuned exhaust.
The exhaust stroke is also the intake stroke... the exhaust scavenges some of the fresh intake charge out into the header. In a properly tuned system, just as the piston is about to close the port, a reversion wave comes back up the header and "slams" that extracted fresh charge back into the cylinder.
It's called being "on the pipe"


Both of these aspects cover a fairly narrow RPM range, and for our engines, the impact of scavenging is negligible.
Even top-fuel dragsters run open straight pipes... no scavenging at all.

 

Thanks for the explanation guys. Also - seconding the motion on the CO being odorless. CO is a silent killer, so as noted by a few here, exit the exhaust in a safe location. Better safe than sorry.

 

Can someone address this from the perspective that I got hit by scumbag catalyic converter thieves a nd my pipe is cut from the bend on the passenger side header. Need to drive it 15 miles to my shop and don't want to cause any damage - timing, valves, lifters, camshaft, etc.