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Hey TexAndy,
The only means I have of recording is my cell phone camera.
I tried and in-cab recordings are garbled racket.
I have a whistler, too.
Trust me, the whistle's still there. :beer:
Just not as shrill.
Hi G.,
I already did the research on the flow-through (bullet) glass packs.
They're rated at 2-4 db reduction, per Walker/Dynomax.
The Donaldson is rated at 10-15.
It passed that test with my idle for sure (almost 11).
The Dynomax bullets are around $60 ($46 and $10-12 "handling" at Summit...
Trust me, I've thought a LOT about running the exhaust out the back.
And I'll re-use the Donaldson muffler.
I have the whole thing planned in my mind, including exiting behind the passenger rear tire just like modern trucks. ;)
The only thing holding me back is time and a long list of other...
NO problem on the measurements. I was as curious as everyone else.
The body of the muffler is 7"x14", 3.5" ID inlet and outlet.
I attached a little drawing of how it's constructed internally.
Noise reduction is accomplished by flow re-direction.
When you say "left out lower bent tube", do...
Interesting!
You took your readings in different places than I did, that's where the difference comes in, I imagine.
My idle was VERY near the outlet of the stack.
The 1950/50MPH was in the middle of the cab with me holding it in my hand.
My db meter is from work.
Used by the Safety Dept. to...
Thanks for the compliment.
I'm glad to return the favor to all those who help me on a daily basis here on SS!
I REALLY wanted to get some sort of audio files together.
But my camera phone produced terrible audio near that stack and the in-cab was a garbled mess with all that driveline noise...
Actually no.
But the previous owner bent them from stock (due to tagging a tree or something?) in the past.
That being said, you may have to bend yours.
The tubes do bend pretty easily so no worries there.
Got it installed!
I went ahead and started a new thread with the db readings:
http://www.steelsoldiers.com/deuce/54990-muffler-installation-db-comparison.html#post633525
A BIG thanks to chgofiveo for the Donaldson muffler recommendation!
That is one seriously heavy duty muffler.
Hello all,
I installed the Donaldson M070028 muffler following chgofiveo's thread.
EASY install! I haven't reinstalled the shield yet. See pics.
The Donaldson is a far superior muffler, in my opinion, due to it's robust construction (Heavy Duty!) and lack of packing inside (packing WILL soot...
I have a db meter!
Yee Haa! I scored a db meter here at work to borrow!
Here's what I'm thinking:
1. Near the stack at idle. How far away?
2. In the cab while driving down the road at around 55.
Both readings before and after the muffler install.
Any input is appreciated.
I picked up a Donaldson M070028 muffler yesterday from a shop in town.
They had them in stock!
That's a serious muffler!
Heavy duty!
And best of all? NO packing inside to blow out.
Weather and time permitting, I'll have that thing installed today or tomorrow.
I can't wait to see how it...
I'm no expert but I did just install my new top last week.
But the front of the bows should be fully engaged in the windshield frame-up to their integral "washers".
I am thinking your tube (back of cab where the bows go into) might be turned too much, causing the front of the bow to go...
You're correct....without lockouts, even when you're NOT in all wheel drive the front end all the way back to the transfer case is spinning.
Put on lockouts and the entire shebang sits still.
Only the wheel bearings and hub spin.
Tis a beautiful thing.
Yes, it's easier to steer and drive...