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Comments
PC BYC, Holland, MI
You say diesels are not shade tree serviceable, new diesels are not shade tree serviceable. Up until the EPA ruined both 2 stroke and diesel engines they were very serviceable by owners.
Always opinions on the EPA and emissions. Your car engine goes 100k miles without a tune up. 2, 3 even 4x the power per cubic inch than years past. Diesels were late to the game with the tier III and IV emissions kicking in, even those are over 2x the power in the same displacement. No black soot staining everything too...or the stink. Quieter too.
PC BYC, Holland, MI
In an inland cruiser it's not as big of a deal although doing the icw (there are a few nice spots in the Carolinas to visit on the icw) the added range is nice, you won't need to be stressing about that fuel needle.
The idi diesels are quieter but dont get the efficiency of di engines.
I always found that what made a diesel louder or quieter wasn't the injection system/head, its the engine stroke. The 3.0 mercedes diesels make nearly the same hp as a cummins 3.9 4bt. The 3.0 weighs half as much and has a much broader torque range, shes happy at or slightly above 3500 rpms. A 4bt sounds like it's going to grenade above 2200.
As for mainance on many of the diesels i work with its a timing belt/water pump every 60 to 70k. Oil change and fuel filter every 10k. The 7.3 engines are 5 k oil changes. We dont work with any new cummins. The kubotas we deal with are equal to a 50s farm tractor. About as simple as rock paper scissors
At 170 hp and current torque range she also makes the same power or more as all but the heavy duty commercial marinized 250 hp 4bt engine and does so at 400lbs, half the weight of the 4bt. With rod upgrades and head studs i can also make 250 hp and 450 ft lbs of torque. Only i can do it at higher rpms without eating a bravo or vp outdrive for lunch.
I should also mention i own a ross tech **** com which is the same as having dealer licensed software. I got the older one with unlimited vin reads.
My only issue with maranizing is the exhaust conversion. The making the back of the block look like a 1988 small block chevy is the easy part. Keeping the engine bay sub 175 degrees is the deal breaker
Other than the killer dowel pin i didn't relazie cummins had anyting to delete. Most of the conversions I've done have used the isuzu 4bd1t or 4bd2t 3.9 liter engines. Direct competitor of the Cummins 4bt but a little more street friendly rpm range, not by much.
Exhaust fluid sounds like a bad joke.
I consider def equivalent to the oil passage injectors on my 7.3, they took a simple diesel engine that just needed filters and oil change every 10k and now it needs an oil change every 5k. Thanks EPA. Now I need double the oil over the life of my vehicle. Good job conserving non renewable resources. Im sure it wasn't just the epa on the hpop systems, its cheaper manufacture an hpop diesel injection system than it is an injection pump. When someone spends 80k or more on a work truck, we want what saves the manufacturer the most cash right cause that's means reliabilty and efficiency for us the consumer
I miss the days when a diesels electronics were a 12v fuel cut off solenoid on the side of an injection pump, a starter and an alternator.
Im glad i live i a state with no inspections.
Vw does make a v6 tdi that can easily make BBC power and torque at half the weight. No diesel is going to double your mpgs on plane doing 35 mph but when you're puttering around at sunset enjoying adult beverages and good tunes you'll easily double your mpgs at hull speeds.
The rock climber off roaders have started steering away from the Cummins 6bt and going with the mercedes and vw diesels as that 600 plus hp range at a 500 or so lbs weight reduction really helps out. The easily tunable ecus and engine adapters are making the custom set ups a little more off the shelf.