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Open Roads Forum  >  Tow Vehicles

 > What makes modded diesels fail?

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gmcsmoke

Butler

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Posted: 06/22/12 10:14am Link  |  Print  |  Notify Moderator

biodiesel and not keeping fuel reciepts.

coolbreeze01

Redding, Ca

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Posted: 06/22/12 10:26am Link  |  Print  |  Notify Moderator

Where hot rods are concerned, the weakest link is usually behind the wheel.


2008 Dodge 3500 With a Really Strong Tractor Motor...........
LB, SRW, 4X4, 6-Speed Auto, 3.73, Prodigy P3, Blue Ox Sway Pro........
2007 Komfort 212 on 225 75R 15E Maxxis 8008 Tires.........

DirtyOil

Alberta

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Posted: 06/22/12 10:29am Link  |  Print  |  Notify Moderator

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The biggest thing that causes "bombed or juiced" trucks to fail is the operators right foot!


X2

Quote:

NavyDood wrote:

Not a single issue with my minor mods and what some would call "lack of maintenance" on my 48RE. In 186,000 miles I have never adjusted the bands and never will unless there is an issue directly related to them. Regular fluid and filter changes do happen though. A lot has to do with the carbon life form behind the wheel.


Your going to have a premature failure if you don't adj. the bands, I guarantee it. The band will apply looser and looser until it starts slipping. It's very similar to slipping a clutch but you won't know when it happens. The lining on the band is extremely thin and will flake off quickly as it over heats. Then the bare metal will dig into the drum and destroy it. Drums are no longer produced so they are very expensive.
Not slamming you, just trying to keep you from having to waste money on an otherwise unnecessary repair.


The reason I have a built tranny, because I believed the BS on adjusting the bands... burned out the OEM!

Quote:

One group is trying to build to build toy trucks (high hp, lifted, etc.) that really don't care much about reliability.


I've seen plenty stock trucks piggy backin on flatbeds, tell me whats reliable bout dat?

Closing in on 200k miles on my 05 with its 6" lift, 37" tires, 50 hp nozzles, programmer, CAI, 5" exhaust (minus the cat too), oil bypass filter and 2mic fuel filter as well. In those "close to" 200k miles I've done balljoints once and replaced one tie rod. Oh yeah, normal wear and tear u-joints have been replaced on both driveshafts. I forgot to mention ... all the mods were done within a month of pruchasing it. Truck is doing damn good considering the roads its traveled.


2005 Dodge 3500 CTD QC, 2007 Forest River Cherokee 27RL

CR and Motor Trend both report: My wife says I'm the only one and the best she's ever had.

DirtyOil

Alberta

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Posted: 06/22/12 10:41am Link  |  Print  |  Notify Moderator

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Increased timing can also cause hotter combustion temperatures with & without increased EGTs



Not understanding this... causes hotter combustion "without" increase in EGTs? Where does the excess heated combustion go then? Has to come the exhaust eventually?

ScottG

Bothell Wa.

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Posted: 06/22/12 10:44am Link  |  Print  |  Notify Moderator

DirtyOil wrote:

Quote:

Increased timing can also cause hotter combustion temperatures with & without increased EGTs



Not understanding this... causes hotter combustion "without" increase in EGTs? Where does the excess heated combustion go then? Has to come the exhaust eventually?


Not correct. Modern diesel engines have their timing retarded to improve emmisions. This actually increases EGT's. By putting the advance back in you lower EGT's and improve throttle response at the cost of emissions.


Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
2004 Forest River 25RKS many, many mods.
H0NDA eu2000i

I'm Rick James

Reno, NV, USA

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Posted: 06/22/12 10:48am Link  |  Print  |  Notify Moderator

NewsW wrote:



The adage:

"Weak points cannot be eliminated, only moved around" applies.

.

You obviously have no experience with a 6.4 Powerstroke Mr. Supertroll.

DirtyOil

Alberta

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Posted: 06/22/12 02:30pm Link  |  Print  |  Notify Moderator

Quote:

DirtyOil wrote:


Quote:

Increased timing can also cause hotter combustion temperatures with & without increased EGTs



Not understanding this... causes hotter combustion "without" increase in EGTs? Where does the excess heated combustion go then? Has to come the exhaust eventually?

Not correct. Modern diesel engines have their timing retarded to improve emmisions. This actually increases EGT's. By putting the advance back in you lower EGT's and improve throttle response at the cost of emissions.


I thought so... wuz tinkin somebody wuz playin games.

Lessmore

Canada

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Posted: 06/22/12 03:21pm Link  |  Print  |  Notify Moderator

My opinion is that for heavy duty service such as towing, one would be wise to leave the powertrain stock.

Most engines nowadays, especially turbo diesel engines, have healthy torque and horsepower ratings without resorting to jack up the power.

Make sure your vehicle has been maintained according to severe service requirements , watch your gauges (in my case I particularly keep my eye on engine temperature) and don't overload your vehicle's factory stated towing capacities.

The last thing I want to do is to get my tow vehicle repaired during a trip, while stuck in the middle of nowhere.

I believe modifying your vehicle with non factory parts increases your chances of these kind of situations happening.

So, leave it alone.

johntank

Oxford, Ms 38655 USA

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Posted: 06/22/12 04:39pm Link  |  Print  |  Notify Moderator

A lot of it is the Headspace and Timeing of the person behind the wheel. JMHO

Cummins12V98

on the road

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Posted: 06/22/12 07:24pm Link  |  Print  |  Notify Moderator

Over fueling with out enough air= melted #6 on Cummins.

On a 12 Valve Cummins 30# boost 16 degrees timing modified fuel plate Big air filter 4" exhaust set of gagues run pyro at 1250 degrees all day no problem.


2011 Ram Laramie Longhorn 3500 Dually Long Bed, Cummins 350/800 HO, Towin Machine
B&W Companion Hitch, Maghytec Trans and Rear Dif Covers, AMZ/OIL Top To Bottom
2007 1/2 Mobile Suites 36 SB3 27,000# Combined

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