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#1
12-25-2006, 08:11 PM
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Diesel Engine Blocks
Has anyone ever been stupid enough, or smart enough to design an all aluminum Diesel Engine?
__________________
RIP: 80 300SD RIP: 79 450SEL 2002 E430 4matic (212,000km) 2002 ML500 'sport'  ____________________________ FACEBOOK: PANZER450 
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#2
12-25-2006, 08:12 PM
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The 07 CDI is all aluminum, the Audi R10 is, and the VW Touareg V10 is.
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#3
12-25-2006, 09:05 PM
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doesnt the new V6 diesel use cast iron/machined piston sleeves
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#4
12-25-2006, 09:22 PM
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Yes, they are press in dry liners like our engines use.
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#5
12-25-2006, 10:17 PM
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I believe it is not possible to design an engine, gas or diesel without Iron sleeves at least. also, any motor not designed for very limited use (like a drag motor) must have iron in the rods and the crank. as well as the valves and the connecting pin. possibly titanium would work, but not aluminum. just the main castings could be aluminum. the block and the heads and intake manifold. high strain items need more durability than aluminum can provide.
JMHO. John
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#6
12-25-2006, 10:27 PM
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IIRC, Porsche uses Nikasil coated alloy cylinders instead of iron sleeves. Honda/Acura also has a similar process. Some snowmobile engines have the same coating and I believe the bores can be "replated" to renew them so the engines are rebuildable. I think the Duramax is an all-alloy diesel. Properly designed, there should be no problems with an all alloy diesel engine. The engineering and metalurgy has come a long, long way since the first problematic alloy engines. RT
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When all else fails, vote from the rooftops! 84' Mercedes Benz 300D Anthracite/black, 171K 03' Volkswagen Jetta TDI blue/black, 93K 93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K
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#7
12-26-2006, 10:20 AM
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I seem to remember the Chevy Vega was one of GM's experiments with an all-aluminum block. No iron liners as far as I know. You could recognize them by the blue smoke.
Not many on the road now except for the few that received an engine transplant to a traditional GM engine.  Ken300D
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-------------------------- 1982 300D at 351K miles 1984 300SD at 217K miles 1987 300D at 370K miles
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#8
12-26-2006, 11:32 AM
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Quote:
Just the 32v heads are aluminum. Still a deep skirt, reinforced web iron block.
__________________
I'm not a doctor, but I'll have a look.  '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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