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Turbo's are a "muffler" of sorts on their own.
Without a turbo between the exhaust port and the outlet of the stack on your NHC, I bet it was loud! :)
Speaking of turbo......the whistle of the 8.3 in my truck is incredible with the straight pipe.
If I want to change the noise in the...
After reading all the posts about straight pipes, hearing the faint whistle of the turbo in my truck (and vivid memories of my old whistler turbo deuce....) and knowing the "cork" the stock muffler undoubtedly is in the exhaust, I dug around the garage, found a couple old 4" mandrel bends from...
I had to update......
Folks, this truck surprises me every day. And I mean that in a GOOD way!
It has shown itself to be such a solid, strong-running, reliable rig.
The only fixes I've had to do were the safety relief valve on the air tank (brass pressure relief), snug a couple air fittings...
I eliminated my muffler and built a 4" straight pipe yesterday.
I tried to keep it as "stock looking" as possible by reusing the original upper stack, painting it flat black and using the muffler shield.
The sound is fantastic (DEEP sound and the turbo whistle reminds me of my old whistler...
Thanks for the info and video!
When you're used to stock RPM's, 2800 sounds impressive to say the least!
I did my straight pipe/stack yesterday and can't wait to adjust the top fuel screw.
I'm sure a governor adjustment or spring install will follow.
So the HP10029 kit fits the MW pump? I...
Fantastic idea.
I JUST put my stock flaps on last night and yes, they are basically right on the tires.
I do like your offsets much better.
Thanks for the tip!
Mud Flaps and a drive.....
My M931A2 came with mud flaps behind the passenger seat but one was tweaked and it's mounting bracket was mangled.
Some quality time with the torch, some paint and now I have flaps.
Gotta say, I love the look with those big things in place.
I picked up their door handles; fit great, have what appears to be a VERY durable coating and come with stainless hardware.
I can't get over the number of really cool parts they've devised and had manufactured for our beloved rigs.
"Custom" parts for an M939........who would have...
So it's like the filters that used to be on the old L-Head Willys and the like?
Pressurized oil goes in one end and what remains of that pressure that same pressure pushes it into the pan?
Like the old Willys used to dribble back into the timing cover.
Not a super effective means of filtration...
I have a pdf file from Donaldson filters listing a SEA of diesel engines and their airflow requirements.
They list the Cummins 6CTA8.3 as 632cfm.
Their rating is for 250hp at 2500 rpms so I'm sure a slightly lower airflow would suffice (none of us do that sort of rpm).
I just looked...
I just replaced my fuel filters last week.
WIX 33401 for the big filter. It included the correct large canister gasket AND the o-ring for the screw.
WIX 33472 for the engine-mounted small one.
I replaced a leaking safety relief valve from the air tank-to-dryer hose on my M931A2.
Piece of cake.
Picked it up at a local auto parts store: Bendix Part No. 205105
150PSI just like the rusty inside leaky original.
I took it to work and tested the relief pressure before bolting it on.
Here is an SS vendor with a straight pipe for our trucks: http://www.steelsoldiers.com/showthread.php?121087-New-straight-pipe-exhaust-system-for-your-truck&highlight= I haven't used one personally but it sure looks like a nice piece!
Thanks, Smokinyoda!
No luck on my old deuce.
I tell you what......a man sure gets spoiled in the 5 ton.
Talk about "cushy" with that automatic and power steering. Amazing how easy it is to drive.
Like I tell everyone who asks about my truck.....it doesn't FEEL as big as it is when you're...
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