Living On
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A leaking or plugged intercooler can burn a piston in a minute. Check out this option also.
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lfeather
Titusville, FL
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Joined: 08/03/2001
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Altern wrote:Lady Fitzgerald wrote:Altern wrote:JcoFS3500 wrote:Overfuelling (injector problems) can burn holes in the pistons
I believe running too lean can burn 'em too. Verdad?
Not on a diesel. Now that I think about it....you are correct.
It could with gas though, causing detonation.
Gas should ideally burn at stoich - otherwise one gets crazy hot spots.
I know a guy who started filling diesel tank with gas at BP. Which has green handles for all pumps. Only 10 gals until he realized what he was doing.
Larry, Debbie, Tiki and Tomi
USAF Retired
2003 36' Country Coach Allure #30856
2008 Tacoma Towed
SMI Air Force One toad brake
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Lady Fitzgerald
Tempe, AZ, USA, Earth
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lfeather wrote:Altern wrote:Lady Fitzgerald wrote:Altern wrote:JcoFS3500 wrote:Overfuelling (injector problems) can burn holes in the pistons
I believe running too lean can burn 'em too. Verdad?
Not on a diesel. Now that I think about it....you are correct.
It could with gas though, causing detonation.
Gas should ideally burn at stoich - otherwise one gets crazy hot spots.
I know a guy who started filling diesel tank with gas at BP. Which has green handles for all pumps. Only 10 gals until he realized what he was doing.
I caught a guy at work filling up a gas tank with diesel. The garage had to drain and flush the tank. If I hadn't caught it, he just wouldn't have gone any farther than the gas in the carburator bowl. It would have been worse if he had filled a diesel tank with gas and no one caught him, the heads might still be in orbit (this was back in the '70s).
Jeannie
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MrWizard
Traveling
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Joined: 06/27/2004
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only the pistons are mine, not the other scrap
here is the head
Options, always have options, and the journey goes much smoother
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slickest1
canada
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Man that piston is bad! I am surprised they are not replacing the liners.The head looks good though. I hope your up and going soon.
2000 H.R. Imperial 38wds rr8r roadmaster, isc 350 cummins
2007 Chevy Trailblazer, Blue ox towbar
Ready Brake with breakaway.
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MrWizard
Traveling
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I will defer to others with more knowledge, but my understanding is that this is not an aluminum block, it doesn't have sleeves/liners and doesn't use them unless over bored
Cummings 5.9L 6BT
it doesn't need oat coolant and doesn't have cavitaion worries
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Jim@HiTek
Gresham, OR, USA
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Just grind some of that carbon off the pistons and slap them back in there, MrWizard. Good as new. 
Glad it wasn't as bad as we all thought to begin with.
 Jim@HiTek
Have shop, will travel!
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Fleetwood Bounder, '94
Cummins Diesel, 190HP, 36.5' with 50HP LP boost.
Black Rock Lava Park, Nevada
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sundancer268
Charlevoix
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The black junk on the top of the piston looks like carbon build up from lack of sufficient air or a bad injector. The scuffing on the side of the piston will probably be from over heating or less likely from lack of lubrication. Do to the side damage you did require replacement of the pistons and machine work on the block. Good luck. I have the same engine and mine overheated also. I was lucky in that my wife and I smelled the anti-freeze and the low coolant alarm came on. This happened on our way home from just purchasing our coach. The water temp gauge and idiot light quite working. Fortunately for us there was no significant damage and after the fan belt replacement we were on our way.
U. S. Navy (RETIRED) 1993
1995 Gulf Stream Scenic Cruiser 34' Diesel Pusher Cummins B5.9 12 Valve Engine, Allison MD-3060 6 Speed Transmission.
TOAD: 2005 Ford Focus Automatic Station Wagon
Road Master Sterling All-Terrain
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2inAlabama
Huntsville, AL
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After severe overheating as in this case, just how much of the engine can you reliably reuse? I am no diesel expert - my experience is less than 6 months - but I would not be comfortable re-using any of the pistons or the heads! Am I wrong?
Just DH & DW
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gfs1943
Whitney, Texas
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You may want to ask NAD if they can Magnaflux (or other nondestructive test) the head to check for cracks, just to be sure everything will work properly when reassembled.
gfs1943
USAF, Retired (1962 - 1983)
'00 Itasca Horizon 36LD
Cat Diesel Power
2006 Honda CR-V
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