Yet another LMM annoyance, offroad tip...... [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Yet another LMM annoyance, offroad tip......


ewbish
03-31-2008, 07:07 PM
The stupid trombone somebody with a sense of humor welded onto the ends of our tail pipe. So, when operating in deep sand/silt, and off camber type stuff.......when you back up, that stupid thing scoops the dirt up and packs in all the way to the back. You won't notice right away, the engine will run find because the exhaust will vent backwards around the rear opening.......and right up under the cab (potential "death issue" here) and fill the inside with exhaust if you are sitting idling, or crawling very slow. Then, when you regen...........it will super heat that shit and turn it damn near into rock. Requiring a bit of work with a hammer to break it up and get it out.

Kind of concerns me that if plugged, that heat shield pumps exhaust backwards and up under the cab.

grdnw78132
03-31-2008, 07:38 PM
Well how about gettin High centered on a very very small hump. these trucks should come a little higher off the ground in the frontend. Cant belive that I havent ripped the front bumper off.


Sorry had to get that off my chest.

BUDH
03-31-2008, 07:51 PM
I won't have to worry about that. I got the truck to haul my toy to the trails, not the other way around. These things are too big and clumsy for offroad.

honda_400ex
03-31-2008, 07:54 PM
my front is all screwed up on the bottom, way too low. drags going through ditches

Sgt Badger
03-31-2008, 07:55 PM
How about one setting a dry field on fire during regen.....:eek:

ewbish
04-01-2008, 12:05 PM
I won't have to worry about that. I got the truck to haul my toy to the trails, not the other way around. These things are too big and clumsy for offroad.

Well.......that's the idea. However, I got two of my toys (or rather, the kids did) stuck in the mud. I had to ride back, get the truck, then cross country across the Superstition OHV area 23 miles back to them. Broke a 20,000 lb strap getting the XR out of that mud pit it was stuck so bad. The other bike came out a bit easier. XR had to be hauled back to the pits, but the CR lit right up. I'll be rebuilding the XR engine this weekend I'm thinking.

huthuthut
04-01-2008, 12:18 PM
Your saying you put 20,000 lbs of force into a dirtbike? LOL.... that thing would have snapped in half so fast or slingshotted into the next state.

jim87vette
04-01-2008, 01:36 PM
That sounds like more of annoyance to me lol,would love to see some- You fail pics of that:rolleyes:.



Well.......that's the idea. However, I got two of my toys (or rather, the kids did) stuck in the mud. I had to ride back, get the truck, then cross country across the Superstition OHV area 23 miles back to them. Broke a 20,000 lb strap getting the XR out of that mud pit it was stuck so bad. The other bike came out a bit easier. XR had to be hauled back to the pits, but the CR lit right up. I'll be rebuilding the XR engine this weekend I'm thinking.

ewbish
04-01-2008, 03:06 PM
Your saying you put 20,000 lbs of force into a dirtbike? LOL.... that thing would have snapped in half so fast or slingshotted into the next state.


Had to see it to believe it..........the suction was so bad it was unreal. You could walk on the mud with no issue, but if you stopped for a second, you'd be up to your knees instantly. We had to tie off the bikes to trees on the embankment to keep them from sinking any further. When I first hooked up the XR, I'm thinking the ol' LMM will pull it out lickety split. Nope. I'm sitting there spinning in 4WD and the bike ain't moving, when I rocked it, that's when the strap broke.

You can't break an XR in half........if there is ever a nuclear holacaust, the only thing left will be cockroaches and XR's, but when it did finally come out of the mud.......it damn near did slingshot into the next state.

huthuthut
04-01-2008, 03:16 PM
Nah.

minnesotaroofin
04-01-2008, 09:20 PM
Yes, I have noticed it as well -- Never had a problem backing up to a curb loaded before did not even notice this until i looked at the picture 1 month later.
http://minnesotaroofing.com/pictures/rip%20it%20off.jpg

oneoff
04-01-2008, 09:31 PM
That is what the aftermarket is for. Lift it and ditch the trumpet. That trumpet really has to be the ugliest thing. Looks so much like an afterthought.

jrcmlc
04-03-2008, 01:21 PM
Exhaust will be sitting at my house before my new LMM arrives, worried about that picture above, and the way it looks. :-)

Joe Clark

ST04
04-03-2008, 01:49 PM
I cut the tip of mine off. I don't really see the reason all it does is cool the exhaust when it comes out. Pointless.

DieselLMM_6sp
04-10-2008, 03:33 AM
I cut the tip of mine off. I don't really see the reason all it does is cool the exhaust when it comes out. Pointless.

1. did that change the sound of your exhaust at all?

i've been thinking about cutting my stock tip off at the extension points... but when i cut just the tip of the end muffler pipe on another of my trucks, it started getting a little buzzy... i like my dmax quiet....

2. are you getting some black soot on the inside of your rear bumper where the exhaust points?

hookdOnDmax
04-10-2008, 03:28 PM
I cut the tip of mine off. I don't really see the reason all it does is cool the exhaust when it comes out. Pointless.
:eek: :badidea:

It wouldn't bother me to eliminate the DPF, and obviously lose that trumpet.
But if the DPF is intact, I'd be concerned about a child wandering too near that exhaust while the ECM is blowing 1200 degrees of incineration!

The odds might be pretty low ... but not low enough to risk burning someone.

AlZDURAMAXX
04-14-2008, 08:52 AM
I cut the muffler off eliminating the tailpipe and muffler all together. Bolted on a chrome turn down and the sound was no different.

Ted White
04-15-2008, 07:56 PM
The "trombone" is essential because it acts like a venturi to cool the exhaust gasses during regeneration. Without it there is a risk that the exhaust gasses would burn or damage anything right behind the tailpipe.

Jasondt2001
04-15-2008, 08:05 PM
The "trombone" is essential because it acts like a venturi to cool the exhaust gasses during regeneration. Without it there is a risk that the exhaust gasses would burn or damage anything right behind the tailpipe.
That's right, as the hot exhaust flows over the rearward holes it acts as a vaccum sucking in cool air, it mixes in the trombone like a venturi and spits out cooler exhaust.

davey1028
04-15-2008, 08:36 PM
I'll have to hook y'all up with my ex because she was good at creating a low pressure area.

looneytune
04-15-2008, 08:43 PM
I have packed mine solid with snow when plowing my parking lot.

JetA
04-16-2008, 02:15 AM
I won't have to worry about that. I got the truck to haul my toy to the trails, not the other way around. These things are too big and clumsy for offroad.

+1 :welcome2:

dr_unspoken
04-19-2008, 03:59 AM
The stupid trombone somebody with a sense of humor welded onto the ends of our tail pipe .... Haha gota love that part

ewbish
04-19-2008, 02:52 PM
+1 :welcome2:

All I can say is.........if you two never have to go off road to recover stuck/broke/wrecked toys.........

You're not playing hard enough;-)

socal2ks
04-21-2008, 02:41 PM
How about one setting a dry field on fire during regen.....:eek:


That was my concern here http://www.dieselplace.com/forum/showthread.php?t=176207

Did that happen to you?