Ranger Exhaust Question?

rangermx25 · Nov 15, 2007

The past 6months ive had the flowmaster 40 series on my 99 ranger. Well there just not loud enough. So today i put on a glasspack and they sound good. It seems like a bunch of people say there a lot louder but mine dont seem that much louder does it just take a little bit for them to break in of what? Ive only had em on for like 5 hours and driven w/ him at most 1.5 hours. wat do u guys that have glasspacks think?

Twizzler09 · Nov 15, 2007

As far as "performance" mufflers like the flowmaster 40 and "glasspacks" go, I think they are fairly similar as far as volume goes. The magnaflow glasspack on my Ranger sounds exactly the same 3 months and 1800 miles later as it did when it had just been welded up.

My opinion, and I could be wrong, is that glasspacks have ONE advantage, increased flow vs. a flowmaster 40. The 40's flow really well, but theres bends in the tubing inside the muffler itself, whereas a glasspack is essentially just a slightly larger diameter pipe with material packed around the inside pipe wall, a straight pipe like a glasspack *should* outflow a muffler like the 40.

Keep in mind this is based solely on my opinion and information/knowledge gained through casual conversation with a muffler shop owner, I could be entirely wrong.

Broncodude · Nov 15, 2007

Glasspacks don't last. Once they get burned out, which can take one month or 3 months, they will get louder, usually A LOT LOUDER. Highway driving burns them out faster due to the flow and heat.. If you want loud, you should get it. Mine were on a Chevelle with a 400hp 327 so it had more air flowing, so your time to burn out will very...good luck

85_Ranger4x4 · Nov 16, 2007

I have had 2 (true duals) in my F-150 since about the first of August, so far there hasn't been a huge change in sound. I do notice it gets louder the longer I drive it but it seems to be heat related, and not related to the age of the glasspacks. I wonder if catylitic converters extend their lifespan??

I had one in my Ranger for about 2 years, it saw little highway time and still sounded about the same when I took it off. The pipe was shot, and I was sick of the V-6 drone so I put in a much quieter exhaust that was in better shape.

The glasspacks in both trucks were Thrush Magnum Glasspacks.

Twizzler09 · Nov 17, 2007

Yeah, I have noticed that the sound changes slightly and it increases in volume a little once everything warms up. Otherwise its exactly the same as it was when it was installed.

fenton mudder · Nov 23, 2007

Take it from me i bought a thrush glasspack on the first day i had my truck and it has gotten louder and better as time goes on. They are legal as well as non-restrictive, and the feedback you get with one in a manual when you left fully off the gas sounds wicked people always turn to see what is coming when they hear that.

fenton mudder · Nov 23, 2007

If you want to "break it in", get that thing as hot as you can, and hit it with ice cold water, that will cause the packing to break much quicker than normal driving.

b_aldredeg · Nov 24, 2007

ive got the flowmaster on mine and its pretty loud ive got headers too that might be the difference also the bigger the pipe the louder it is 4.0 rangers you can go to 2 1/2 pipe any bigger your going to lose back pressure

cr_the_machinist · Nov 25, 2007

Gotta make sure you keep you back pressure up to snuff or 1. you loose torque/hp 2. you'll burn up you exhaust valves. You don't want you exhaust too free-flowing.

sonicboom919 · Nov 25, 2007

Even with the bigger pipe, there is already plenty of backpressure. Heck, headers give you enough backpressure for anything you need to do.

soylent_green · Nov 25, 2007

On a 92 5.0 FS bronco, I had stock manifolds, 18" of pipe, 28" cherry bomb glasspacks, and turnouts in front of the rear wheels. It took about a week of driving to work for the glasspacks to get burned out, Didn't notice much of a difference in sound, (F*N loud) but it was a little more rappy than they were when new.

shadetree · Nov 27, 2007

sonicboom919 said:
Even with the bigger pipe, there is already plenty of backpressure. Heck, headers give you enough backpressure for anything you need to do.

cr_the_machinist said:
Gotta make sure you keep you back pressure up to snuff or 1. you loose torque/hp 2. you'll burn up you exhaust valves. You don't want you exhaust too free-flowing.

You guys don't have a clue as to what you are talking about. shady

4LO 4.O · Nov 28, 2007

cr_the_machinist said:
Gotta make sure you keep you back pressure up to snuff or 1. you loose torque/hp 2. you'll burn up you exhaust valves. You don't want you exhaust too free-flowing.

I call B.S. on this one, I removed my muffler over a year ago, it's got as much power then as it does now and i haven't burnt any valves.

85_Ranger4x4 · Nov 28, 2007

When you don't maintain the proper exhaust gas velocity is when you loose power/torque. Backpressure is not a good thing in an exhaust system.

As long as you have a manifold/header of some sort and a couple feet of pipe behind it, cold air should never touch the valves before the engine is cooled enough for it not to matter. I haven't heard of anyone burning valves with an exhaust of any sort on their truck.

shadetree · Nov 28, 2007

85_Ranger4x4 said:
When you don't maintain the proper exhaust gas velocity is when you loose power/torque. Backpressure is not a good thing in an exhaust system.

As long as you have a manifold/header of some sort and a couple feet of pipe behind it, cold air should never touch the valves before the engine is cooled enough for it not to matter. I haven't heard of anyone burning valves with an exhaust of any sort on their truck.

Cool air does not hurt exhaust valves. They intake charge is always cool in comparison to the combustion temps. Extreme heat is what causes valve damage(and pistons). shady

Ranger Exhaust Question?

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