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#1
07-12-2008, 09:27 PM
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De-rusting INSIDE engine...
I posted this issuein my new SD thread, but figured I'd get better/more responses if I make one for the issue... The water pump on it failed while I was coming home, and after taking it off, its obvious why. The inside is completely rusted, and its making grinding sounds when it turns. It seems like the inside of the engine is also very rusty... How do I de-rust inside it!? This is why you do not use the green coolant!
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Ich liebe meine Autos! 1991 Mercedes-Benz 560SEL | Megasquirt MS3-Pro | 722.6 transmission w/ AMG paddles | Feind Motorsports Sway Bar | Stinger VIP Radar | AntiLaser Priority | PLX Wideband O2 | 150A Alternator | Cat Delete 1981 Mercedes-Benz 300SD | Blown engine, rebuilding someday... 1981 Mercedes-Benz 300SD | Rear ended, retired in garage. 2009 Yamaha AR230HO | Das Boot Excessive speeding? It ain't excessive till I redline! 
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#2
07-12-2008, 10:02 PM
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citric acid flush procedure
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#3
07-12-2008, 10:05 PM
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Citric Acid
Do a citric acid flush. Be sure to remove the block plug over starter when
flushing. Search here for the exact procedure. Search terms citric acid, correct coolant. I changed my coolant without the acid flush. I used that Xerex G5 stuff. I changed it first to the green stuff before I discovered this forum. I flushed all the green stuff out and replenished with G5. Removing the block plug really makes a mess. Runs right up your arm  .
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85 300TD FED-Daily 84 300SD-Wife's 86 XJS-Sunday 66 GMC-Work- Given to my stepson 83 BMW Airhead- Given to my stepson
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#4
07-12-2008, 10:15 PM
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Citric acid, a little rust is normal. Make sure to change your coolant every 2-3 years.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#5
07-12-2008, 10:54 PM
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Flushing the TD at the moment. Waiting for it to cool to drain, rinse repeat... Nasty rusty looking stuff coming out when the green color was gone so I figure I'll let is set a bit. Wonder how long citric acid can safely stay in there???
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#6
07-13-2008, 08:03 AM
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I don't know about the 603 but the 617, IIRC, is painted inside from the factory.
Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#7
07-13-2008, 02:24 PM
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Ordered some citric acid off ebay. Should be here in like a week... Found a car at the junkyard with a virtually new water pump in it, and a coolant level sender I'm going to install..
__________________
Ich liebe meine Autos! 1991 Mercedes-Benz 560SEL | Megasquirt MS3-Pro | 722.6 transmission w/ AMG paddles | Feind Motorsports Sway Bar | Stinger VIP Radar | AntiLaser Priority | PLX Wideband O2 | 150A Alternator | Cat Delete 1981 Mercedes-Benz 300SD | Blown engine, rebuilding someday... 1981 Mercedes-Benz 300SD | Rear ended, retired in garage. 2009 Yamaha AR230HO | Das Boot Excessive speeding? It ain't excessive till I redline!
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