Results 1 to 9 of 9

Thread: old engines and baked on carbon - a tip

  1. #1
    Join Date
    Aug 2012
    Location
    Tewantin (NOOSA area)
    Posts
    572

    old engines and baked on carbon - a tip

    Something perhaps for the "good oil" too

    Once upon a time in a previous life one used "carbon remover" for cleaning baked on carbon. When I saw the inside of my S1 2ltr did try and find same. Not any more apparently.

    Anyway, was still not happy with wire brushes of all descriptions. Need mask and brushes rotating or otherwise don't get it all!

    Did spot on Utube someone mentioned ye olde standard oven cleaner.

    Have found it is the best thing around
    other than an engine shop's hot chemical bath for removing baked on engine carbon.

    Foam it on wait a few hours then wash it all off, most anyway :0) re-application gets what was left. Wash off with det and hot water and stiff bristle brush. Gets all the nook and crannies too, not like rotating wire brush, and no dust!


    Barby stuff worked but not as well.

    Cheers

    Rick F

  2. #2
    Join Date
    May 2009
    Location
    West Gippsland - Victoria
    Posts
    2,820
    "Back in the day" a common de-carbonising method was to run the engine and slowly pour Red-ex (upper cylinder lubricant) into the intake until the voluminous clouds of black thus created dissipated. I never pulled an engine down to do a before/after comparison but this method certainly produced vast amounts of black smoke which eventually dissipated

    Deano
    66 SIIA SWB .......73 SIII LWB diesel wgn
    86 RR 'classic'......99 Range Rover P38a
    94 Defender 110..95 Defender 130 Ute
    96 D1 300TDi.......99 D2 TD5 (current)
    04 D2a Td5..........02 Disco 2 V8

  3. #3
    Join Date
    Jul 2006
    Location
    Brisbane, Inner East.
    Posts
    10,997
    We used carbon tetrachloride as a baked on gunk remover until it was withdrawn from use. Apparently carcinogenic and caused severe liver problems. It would take the black stains off a cabinet minister's character. Dry cleaners used it daily for difficult stains and spots. Poor buggers are probably all dead from it now.
    URSUSMAJOR

  4. #4
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    24,756
    The block won't fit, but I think the head would fit in a typical dishwasher - the detergent used in them is pretty close to oven cleaner........
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  5. #5
    Join Date
    Jul 2006
    Location
    Brisbane, Inner East.
    Posts
    10,997
    Quote Originally Posted by Bigbjorn View Post
    We used carbon tetrachloride as a baked on gunk remover until it was withdrawn from use. Apparently carcinogenic and caused severe liver problems. It would take the black stains off a cabinet minister's character. Dry cleaners used it daily for difficult stains and spots. Poor buggers are probably all dead from it now.
    We used to pour some carbon tet down the plug holes of gasoline engines and leave it overnight. Start the vehicle outdoors. You would be surprised what amount of black muck got spat out the exhaust hence the starting outdoors. You did not want that crap all over the workshop walls and floor..
    URSUSMAJOR

  6. #6
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
    Posts
    1,616
    Old mate of mine said they put rice in the cylinders, and ran them.
    Head didn't need to be taken off, to decoke.

    whitehillbilly

  7. #7
    Join Date
    Sep 2012
    Location
    Westlake ,brisbane
    Posts
    2,727
    Back when people used RedX in there fuel . when we had to remove the head for what ever reason ( head gasket , valve grind) the carbon was easily removed with decarbonising brushes , the carbon was soft. those that didn't use it we had to chip it away with a hammer & screwdriver. I always used RedX until unleaded fuel was introduced & I was told not to use it with unleaded , not sure why or if it was true. I now buy a Liquid Molly & put in my vehicles when ever I am going for a good high speed run to clean every thing out.
    We our company Ute's we had a 20 lit drum RedX & would put some in all the Ute's every couple of weeks .

  8. #8
    Join Date
    Jan 2017
    Location
    Geraldton WA
    Posts
    6,175
    Quote Originally Posted by Rick Fischer View Post
    Something perhaps for the "good oil" too

    Once upon a time in a previous life one used "carbon remover" for cleaning baked on carbon. When I saw the inside of my S1 2ltr did try and find same. Not any more apparently.

    Anyway, was still not happy with wire brushes of all descriptions. Need mask and brushes rotating or otherwise don't get it all!

    Did spot on Utube someone mentioned ye olde standard oven cleaner.

    Have found it is the best thing around
    other than an engine shop's hot chemical bath for removing baked on engine carbon.

    Foam it on wait a few hours then wash it all off, most anyway :0) re-application gets what was left. Wash off with det and hot water and stiff bristle brush. Gets all the nook and crannies too, not like rotating wire brush, and no dust!


    Barby stuff worked but not as well.

    Cheers

    Rick F

    I wonder if this would work on the fouled up spark plugs in small 2 stroke engines/outboards as a temporary fix to keep them running until you can get a new plug??

  9. #9
    Join Date
    Jul 2006
    Location
    Brisbane, Inner East.
    Posts
    10,997
    Quote Originally Posted by JDNSW View Post
    The block won't fit, but I think the head would fit in a typical dishwasher - the detergent used in them is pretty close to oven cleaner........
    That would probably cause divorce talk. I got into enough trouble using the oven for powder coating small parts.
    URSUSMAJOR

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!