gotta say i love the popping an cracking sounds i got a cat no muffer an side exhaust in front of the rear tire an i love it

 

I love the popping sound too, when its moderate, not insane like my snowblower, but my truck does it when i rev that up, i love it

 

The popping noise you hear on ajake enginebrake is the compressed air in the cylinder being released with the piston at TDC. I believe this guy is hearing unburned fuel igniting in the exhaust system.


Good luck with your rides.

 

Jake brake
(1) The intake valve opens and air is forced into the cylinder by boost pressure from the turbocharger.
(2) Air is compressed to approximately 500PSI by the engine piston. The energy required to compress this air is produced by the vehicle's driving wheels. Near top dead center, the Jacobs Engine BrakeTM opens the exhaust valves, venting the high pressure air and dissipating the stored energy through the exhaust system.
(3) On the downward stroke, essentially no energy is returned to the piston (and to the driving wheels). There is a loss of energy. This loss is how the retarding work is done
(4) Normal exhaust stroke

gas engine
unburnt gas cause the poping ....just install a spark plug in the pipe and u get a flame...sweeeet..of course u need a spark at the plug for this to work..

 

me and my buddies are doin that spark plug trick to his bimmer

 

I have a '97 Ram 4x4 with a 5.9L gas V8, with the stock exhaust i got no popping whatsoever, when i put a 28" glasspack in place of the muffler and then a turndown on the end of that (dumped right before the rearend) it pops when i shift my truck down to second gear (auto tranny), to coast down a hill, etc.

And when in neutral or park and rev it up between 4750-5000rpm and then let off, i get a loud CRACK.

It has to deal with excess amounts of unburnt fuel igniting inside the exhaust, outside the combustion chamber, when a flamable liquid ignites inside a confined space, physics tells us it propels the force out of that space, causing an audiable pop or crack from the exhaust, and sometimes flames depending on a few factors of your vehicles exhaust (length, size, type of muffler, cat or no-cat, etc.)

 

That's unburned fuel from the combustion chambers igniting. Normal for a glasspack.

 

The guy who welds my exhausts for me told me the popping is bad for the cat. Supposedly going to an internally baffled muffler solves it. I might try a cherry bomb extreme next since it has baffles but my SS magnaflow muffler seems like it has a couple decades left on it before it wears out so it might be a while.

 

I like the sound. It's especially audible when you're doing about 65ish and let off the gas then hit the overdrive off button.

 

Baffled mufflers will pop too. I've never heard of cats being damaged by this.
That guy is a tool.
Not even close, try again.


It's fuel that isn't burned in the cyliders making it's way into the exhaust and igniting. I've pretty much got the tune on my truck pop free.