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01-14-2006, 04:04 PM | #1 |
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decarbonizing and degreasing engines
Hey guys,
I am in the middle of rebuilding an inline 6, and I wonder what y'all use to remove the carbon buildup in the exhaust ports / cylinder head, etc. As far as degreasing goes (this engine is caked in about a 1/4" of mud and oil), I have been using simple green and some brushes. It's slow, but it seems to be working. Any recommendations there would be appreciated. Thanks! |
01-14-2006, 04:12 PM | #2 |
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Re: decarbonizing and degreasing engines
Go to the dollar store and get some oven cleaner. Let soak and spray off with hose.
Jason |
01-14-2006, 04:15 PM | #3 |
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Re: decarbonizing and degreasing engines
As far as for removing Carbon...Transmision fuild and some sort of small brush works very well. It doesn't need to be a wire brush either. Good luck.
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Nelson 1970 C10 350 Auto. A/C not Working |
01-14-2006, 04:23 PM | #4 |
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Re: decarbonizing and degreasing engines
Gastrol Super Clean & Easy Off Oven Cleaner............and a little "elbow grease"
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01-14-2006, 04:35 PM | #5 |
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Re: decarbonizing and degreasing engines
you could always get a big tub, a gallon or two of diesel, and just let it soak over night....should help loosen everything up a bit and not be too expensive.
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
01-14-2006, 04:45 PM | #6 |
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Re: decarbonizing and degreasing engines
i have a 20 gallon parts washer, like a tub. you set parts in it with some cleaner of your choice and it gets it off with help from a brush. i was doing that an hour ago with some pulleys and engine brackets caked in grease and dirt, well it was too thickly covered to work fast enough for me, so i took the pressure washer and got all the parts degreased and down to the metal in about 3 minutes per part.
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01-14-2006, 05:39 PM | #7 |
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Re: decarbonizing and degreasing engines
thanks guys - I never would have thought to try oven cleaner - I'll give that a shot and report back.
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01-14-2006, 05:57 PM | #8 |
Franko72
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Re: decarbonizing and degreasing engines
might sound like too much work , but I have used different types of drill wire wheel brushes and try to brush out hard deposits first , then apply degreaser.
An air compressor with the right tools .finish off with blowing everything down with air nozzle.
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1972 C20 cheyenne Super 402 BB/400 turbo LWB A/C Tilt, Cruise Control, Saddle tanks, Tach My Home Page Better to burn out than it is to rust |
01-14-2006, 08:58 PM | #9 |
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Re: decarbonizing and degreasing engines
EVERY MOTOR THAT I REBUILD.. THE FIRST THING I DO AFTER DISASEMBLY, IS HAVE IT HOT TANKED & MAGNIFLUXED. IF THERE IS ANY HAIRLINE CRACKS IN THE HEAD OR THE BLOCK.. NOW IS THE TIME TO FIND OUT. JOHN
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junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST |
01-14-2006, 09:49 PM | #10 |
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Re: decarbonizing and degreasing engines
hey john, what is magnafluxing? sounds high tech.
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01-14-2006, 10:15 PM | #11 | |
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Re: decarbonizing and degreasing engines
Quote:
MAGNIFLUXING IS THE METHOD OF CHECKING FOR CRACKS USING A MAGNET, METAL DUST, & A BLACK LIGHT. ANY SMALL CRACKS THAT ARE NOT VISABLE TO THE NAKED EYE, SHOW UP THIS WAY. IT'S NOT EXPENSIVE OR HI-TECH. IT'S USUALLY $35 OR $40 IN MOST MACHINE SHOPS AROUND HERE TO HAVE IT HOT TANKED & MAGNIFLUXED . I WOULDN'T CONSIDER PUTTING ANY MONEY IN A BLOCK OR A SET OF HEADS UNTIL I HAD THEM TESTED. JOHN
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junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST Last edited by junkyardjohn; 01-14-2006 at 10:16 PM. |
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01-14-2006, 10:38 PM | #12 |
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Re: decarbonizing and degreasing engines
I used aircraft stripper for the carbon deposits on the piston tops. I turned the motor over by hand to get the pistons @ TDC & used a small paint brush to apply it.
Let it sit about 10~15 mins & scrape the 'sludge' away. Repeat as necessary & for the final application I used a green scotchbrite pad to get them pretty clean.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
01-16-2006, 12:07 PM | #13 | |
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Re: decarbonizing and degreasing engines
Quote:
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'72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction. |
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01-16-2006, 12:26 PM | #14 | |
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Re: decarbonizing and degreasing engines
Quote:
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junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST |
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01-16-2006, 08:41 PM | #15 | |
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Re: decarbonizing and degreasing engines
Quote:
When I scrubbed the tops of the pistons, I didn't get too aggressive & made sure to stay within the center of the piston & avoided the edges. I then wiped them down w/a shop rag soaked w/cleaner (all this while the engine was upside down to keep stuff from dropping down internally). I guess I should have explained myself more thoroughly.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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01-14-2006, 09:51 PM | #16 |
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Re: decarbonizing and degreasing engines
You can try the hot water supply from your washing machine connection. Just hit the engine with hot water. Spray Simple Green all over it. Let it sit...long enough for your hot water tank to get hot again and then spray it off. Might need a stiff brush for the tuff stuff.
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Driving a '68 Chevy C20 and a '93 Astro Van. Lots and lots of mileage that I deduct each year. Last edited by Steelawork'n; 01-14-2006 at 09:51 PM. |
01-16-2006, 11:47 AM | #17 |
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Re: decarbonizing and degreasing engines
Be careful not to let stuff "soak" on your wireing. I lost a few wires that way. My wireing was old to begin with and the engine cleaner ate right through it!
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01-16-2006, 01:44 PM | #18 |
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Re: decarbonizing and degreasing engines
Hey Scoti,
Where do you get aircraft stripper? The paint store, or a model airplane store? |
01-16-2006, 02:07 PM | #19 | |
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Re: decarbonizing and degreasing engines
Quote:
Like Scoti I rotate each piston to the top, spray it down, wait a few minutes, then carefully scrape the junk off. I also have the 3M roll-lock system. (I'm not sure if it is spelled that way but at the better auto parts store in town - not napa - I ask for more "roll lock" pads. The roll-lock pads make clean up of machined surfaces a dream. If the roll-lock system is bad for bearings, it takes more than 55,000 miles to hurt anything. I used the roll-lock system on my Escort block at 187,000 miles. I went by 242,000 last week.
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01-16-2006, 03:20 PM | #20 |
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Re: decarbonizing and degreasing engines
I used ez off oven cleaner one time and soon as I rinsed it off everything turned to rust, right before my eyes! It was awfull, has anybody else had that happen to them?
CoolRide |
01-16-2006, 04:56 PM | #21 |
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Re: decarbonizing and degreasing engines
Check out the link below...I saw this a year or so ago, and was shocked since I had used these too in the past.
http://www.gmgoodwrench.com/resource...Procedures.pdf
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'72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction. |
01-16-2006, 09:13 PM | #22 |
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Re: decarbonizing and degreasing engines
TANKING also cleans water jackets ,i like tanking the crank also to clean inner oil lines .ps a life time ago that was my job when not delivering parts at a large parts shop that rebuilt motors
btw i took the motors apart nuts /bolts everything small went in baskets larger basket was for the heads and crank shaft the block went on a chain after the freeze plugs with pulled . after boiling 5/6 hours pulled and washed off out back this was the way in late 1950 but EPA stopped all that by now it was just washed in the ground , starters and generators went the same way then rewaped the firlds and sold as rebuilts laffin i am so old i can rebuild a flat head ford with a quarter inch stroke LOL Last edited by _Dick_; 01-16-2006 at 09:27 PM. |
01-17-2006, 01:40 AM | #23 |
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Re: decarbonizing and degreasing engines
CoolRide: My head is already getting tiny spots of surface rust after I scrubbed it down with simple green a few days ago. I need to hurry up and either get it to the machine shop or sop some clean motor oil on it.
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