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Old 12-29-2008, 09:13 PM   #1
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Default Cleaning engine internals?

Is there any benefit to completely breaking down an engine and cleaning the fuel residue from your engine internals every so often? And if so whats the best stuff to clean em with?
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Old 12-29-2008, 10:30 PM   #2
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Default YES!!!!!

YES I CLEAN MINE ABOUT EVERY 2-3 GALLONS ITS MOSTLY TO INSPECT EVERYTHING AND MAKE SURE THERE IS NO ISSUES. ILL CLEAN THE INSIDE WITH FUEL I ALSO USE SUPER FINE WOOL AND CLEAN THE TOP OF THE PISTON AND HEAD BUTTON TO GET OFF BURNT FUEL RESIDUE. AFTER ALL DONE ILL SRAY THE INSIDE WITH 1 SPRAY OF MARVEL MYSTERY OIL JUST TO LUBE THE INTERNALS. I FIND THNAT WHEN THEYRE CLEAN THEY JUST RUN ALOT MORE CRISP. THINK ABOUT IT WE CLEAN OUR REAL CAR'S FUEL SYSTEMS RIGHT??
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Old 12-29-2008, 11:07 PM   #3
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Quote:
Originally Posted by donbeatya View Post
YES I CLEAN MINE ABOUT EVERY 2-3 GALLONS ITS MOSTLY TO INSPECT EVERYTHING AND MAKE SURE THERE IS NO ISSUES. ILL CLEAN THE INSIDE WITH FUEL I ALSO USE SUPER FINE WOOL AND CLEAN THE TOP OF THE PISTON AND HEAD BUTTON TO GET OFF BURNT FUEL RESIDUE. AFTER ALL DONE ILL SRAY THE INSIDE WITH 1 SPRAY OF MARVEL MYSTERY OIL JUST TO LUBE THE INTERNALS. I FIND THNAT WHEN THEYRE CLEAN THEY JUST RUN ALOT MORE CRISP. THINK ABOUT IT WE CLEAN OUR REAL CAR'S FUEL SYSTEMS RIGHT??
what he said except

you dont need to be in all CAPS it seems like your yelling
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Old 12-29-2008, 11:26 PM   #4
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i have started checking more things with digital calibers to check wear and things like that. especially crank pin and rod bushing. mainly for my reference
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Old 12-29-2008, 11:30 PM   #5
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Default sorry

ya sorry about the caps.
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Old 12-29-2008, 11:32 PM   #6
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i would go with both of the ones up top...
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Old 12-29-2008, 11:33 PM   #7
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Originally Posted by pinky2252s View Post
what he said except

you dont need to be in all CAPS it seems like your yelling
Probably just didn't realize he had his caps on, Ive done it before.

What else besides expensive nitro can i use to clean them with? full scale car petrol?
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Old 12-29-2008, 11:36 PM   #8
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if you have all of the o-rings out you can also use denatured alchohol
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Old 12-29-2008, 11:56 PM   #9
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Quote:
Originally Posted by Jonro View Post
Probably just didn't realize he had his caps on, Ive done it before.

What else besides expensive nitro can i use to clean them with? full scale car petrol?
its always a good idea to use your rc fuel and a toothbrush in a small container, your rc fuel has lubrication wheres as petrol has nothing and will damage any rubber. remember to fully lube everything especially your bearings,piston,sleeve etc with after run oil when you have it all clean.
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Old 12-30-2008, 03:58 AM   #10
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I've had pretty good luck using WD-40 as after-run oil. It will also clean and displace moisture. They start like a new one every time. I use the Traxxas method of after-run treatment. The thinner oil seems to get into more places of the engine.
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Old 12-30-2008, 05:17 AM   #11
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i clean mine every few gallons.. i will cleaner it more frequently if i think someting is not right
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Old 12-30-2008, 05:50 AM   #12
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When I clean an engine (and I do this to new engines as well) I wash all metalic parts in a mild degreaser, rinse off with water to get all of the degreaser out of blind holes and followup with denatured alcohol to dry up the water. I personally use a mixture of light oil & STP engine treatment to coat the parts prior to assembly.

as to tear down of a working engine... I start with a pressure test to check the bearing's seal; after that I'll pull the plug and the header so I can see the piston face. But I never lift the head (my personal belief). An engine that is burning the correct fuel mixture will have a discolored but clean pistion face. If it looks dirty or gunky (hopefully not that bad) when you sneek a peek, you need to work on your needle settings. With time, once the needles are correct, the crap will burn off to a clean surface. I will pull the back plate and front plate (if the engine is designed in that manor) inspect the bearings and rod. I only replace damaged rods, if the rod is WORN to the point of needing replacement, the P&S are probably beyond a pinch and should be replaced as well.
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Old 12-30-2008, 07:38 AM   #13
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Depending on your fuel, a good mixture will leave a small brown coating on the internals. Over time, this will turn to a black carbon like coating. It will go down the side of the piston and progressively thin out. This is fine. Over a long time, the carbon can get thick, but if the engine runs fine, you can leave it alone. Never clean the side of the piston or the inner sleeve where the piston runs, only the piston top and head button if you want to remove excessive carbon build-up.
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