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  1. #1
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Timing cover oil leak

    I have had a bad oil leak coming from the timming cover for years and now im freaking tired of it and when ahead and dismentled the whole think to find the problem!
    It all started when I was at idle with the engine hot and the oil press was like 5 psi.So I bought the TA pressure switch, but as it is, this switch only control oil press when the engine is reving, in wich usually oil pressure is not a problem.So then I bought the TA mutiple thickness oil pump gaskets and went ahead and tried to go a little tighter to get more oil press, the thing is I think I went to tight and I had like 20 psi at idle when its hot!But I kept it that way....until the leak started, it was really bad, its a small leak, but it get sprayed all over the passenger side engine compartement, inside the wheel and on the front right frame and all the directional linkage, the car is a mess and that makes me MAD! Now is there such thing as TOO MUCH oil press????if yes when is too much???Wheres the line??? Anyway, so I went ahead and change the gasket thickness again, more loose this time and got 10 psi at idle when hot. I kept it that way but still had the leak and now im trying to take care of it.
    If you check the pics, you can see on the timming cover, where the oil goes back in the block, the timming cover is scratch, will it hold with gasket stuff??Im too poor to get the 700$ TA cover. Anyway, heres some pic of the engine, can you comment on it??? Is it like it should??? Thanks oh and I have notice I dont have the ''oil slinger'' on the crankshaft after the gear, ?? does it matter?? can I run it without it, what does it does???
    Attached Images Attached Images
    Marc

  2. #2
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Re: Timming cover oil leak

    More Pics
    Attached Images Attached Images
    Marc

  3. #3
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Re: Timming cover oil leak

    last ones
    Attached Images Attached Images
    Marc

  4. #4
    Join Date
    Feb 2004
    Location
    Saint John, N.B.
    Posts
    4,896

    Default Re: Timming cover oil leak

    Did I see paint in the block behind the timing cover gasket?
    One of the first set, you are pointing at the timing chain area.
    Paint doesn't work as a gasket. Ask me how I know.
    1971 Skylark 350-4V
    Sandalwood/buckets/floorshift
    One of none ever made.

  5. #5
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Re: Timing cover oil leak

    Your absolutly right, DAMN machine shop!!!!!!!!!!!
    Marc

  6. #6
    Join Date
    Feb 2004
    Location
    Saint John, N.B.
    Posts
    4,896

    Default Re: Timing cover oil leak

    My leak was in the same spot but self-inflicted.
    I wanted to put the timing cover on myself, with all the associated parts.
    I failed to recognize the problem with paint on mating surfaces.
    First start-up after the rebuild it ran very well until it warmed up.
    Oil, oil everywhere from the same spot as yours.
    1971 Skylark 350-4V
    Sandalwood/buckets/floorshift
    One of none ever made.

  7. #7
    Join Date
    Feb 2002
    Location
    Holland, PA
    Posts
    9,611

    Default Re: Timing cover oil leak

    Use JB Weld to fill in the low spots on that cover, then file it flat.

    Remove the paint from the block in the timing cover area.

    Coat the cover with a THIN layer of RTV silicone, install the gasket, then coat the gasket with a THIN layer of RTV silicone. Bolt the cover on and you should be good to go.

    20 PSI at hot idle is OK in my book. Yeah, it WILL contribute to oil leaks, like the rear main, but your engine will survive.
    Yardley
    2008 BPG Nationals BCO Race Champion
    2005 Muscle Car Eliminator Champion!
    Visit my webpage. I worked hard on it.
    http://www.1badriv.com
    BPG #1033 GSCA #81 ROA #7453
    NE GS/GN Club Member
    1969 Riviera GS Stage1 Clone 12.92@106MPH!!!!

  8. #8
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Re: Timing cover oil leak

    Thank you Yard, whats JB weld??
    Marc

  9. #9
    Join Date
    Jan 2003
    Location
    Port Orchard, WA
    Posts
    692

    Default Re: Timing cover oil leak

    Quote Originally Posted by marcflag View Post
    Thank you Yard, whats JB weld??
    Best friend a broke racer ever had!
    First Buick: 68 Riv GS Red/Black/Black - Gone - But not forgotten
    Next Buick: 1970 GS350 Silver/Black/Black
    Current cars/projects:
    1967 GS400 Under construction
    1970 Olds 442 Under Construction
    1967 Olds Toronado - Needs electrics and window motors to be finished!
    1994 Ford F350 PSD, Longbed, Crew Cab, Dually, 5 Speed - Currently in Diesel Hospital awaiting treatment
    Daily Driver:
    92 Chevy 1/2 Ton

  10. #10
    Join Date
    Feb 2002
    Location
    Holland, PA
    Posts
    9,611

    Default Re: Timing cover oil leak

    Get it at the parts storer. A 2-piece epoxy-type filler that dries rock hard. Sand it right after it cures or you'll need a die grinder to do it later.
    Yardley
    2008 BPG Nationals BCO Race Champion
    2005 Muscle Car Eliminator Champion!
    Visit my webpage. I worked hard on it.
    http://www.1badriv.com
    BPG #1033 GSCA #81 ROA #7453
    NE GS/GN Club Member
    1969 Riviera GS Stage1 Clone 12.92@106MPH!!!!

  11. #11
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Re: Timing cover oil leak

    ah yeah, you mean black and the white stuff that you mix and it gives you that grey stuff!!! ahah thanks guys you rules!!!!!!!!
    Marc

  12. #12
    Join Date
    Jun 2004
    Location
    N/W Arizona
    Posts
    356

    Default Re: Timing cover oil leak

    It looks like you have a rope seal at the front of the crank.

    Make sure it's butted together.

    I had a couple of Fel-Pro rope seals that weren't long enough and left a gap where oil could get out.
    Installed, they looked ok, but after running a bit the ends pulled apart.

    Cured with a rubber seal.
    C9

  13. #13
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Re: Timing cover oil leak

    Yes, had the rope seal, but I ordered the TA rubber seal insted!
    Marc

  14. #14
    Join Date
    Jul 2002
    Location
    the cold north
    Posts
    803

    Default Re: Timing cover oil leak

    I went thru this a few weeks ago. I tried the TA seal and I didn't think it was right for the stock timing chain cover, I think it works correctly with the TA timing chain cover. The seal to get is the National/Federal Mogul Seal# 450446 for the stock timing chain cover.
    Bob Gable
    70 GS Foe Fiddy 5

  15. #15
    Join Date
    Apr 2007
    Location
    WINTHROP HARBOR,IL
    Posts
    346

    Default Re: Timing cover oil leak

    You Need A Slinger For Sure .hows The Oil Pump Cavity,is That A Booster Plate Or High Volume Oil Pump ? You Should Drain Coolant At The Bottom Of Both Sides Of The Block To Keep Coolant Out Of Your Oil.use Fel Pro Gaskets. Randy
    PRESENT CARS
    69 GS 400 STAGE 1 AUTO ONE OF 831
    69 GS 400 STAGE 1 AUTO REPLICA W/71 455 STAGE 1
    69 GS 400 4 SPEED CONVERTIBLE W/70 455 STAGE 1 ONE OF 213
    69 SPORTWAGON 350
    89 ELECTRA ESTATE WAGON LOADED

  16. #16
    Join Date
    May 2005
    Location
    Mirabel Quebec Canada
    Posts
    604

    Default Re: Timing cover oil leak

    The slinger is not there!!! What is its role?? When I send it to the machine shop it was in the parts, but they assemble it and looks like they did not put it!! DAMN!! It was back in 2004.....What does it does anyway??? And its just a regular booster plate, not the 1/4 inch longer gears hipressure/hivolume pump.And yes, I did drain that coolant from there.... Now im just bugged about the lower gear/crank oil slinger damn it!!....I ran it since 2004 without....did not seem to have any probs, but in my assembly manual its there, and it was there indeed when I first dissembled that engine back in 2003...and I tought I was making business with proffessional...those damn speed shop.Should have done the engine myself, I was not very knowledgeable back then...not that I am now hehe. And for that seal, it fits right, you need to take off the ''ring'' that was holding the old rope seal to make it fit.
    Marc

  17. #17
    Join Date
    Apr 2007
    Location
    WINTHROP HARBOR,IL
    Posts
    346

    Default Re: Timing cover oil leak

    The Oil Slinger Keeps Oil Off The Front Seal ,to Make It Less Likley To Leak. Randy
    PRESENT CARS
    69 GS 400 STAGE 1 AUTO ONE OF 831
    69 GS 400 STAGE 1 AUTO REPLICA W/71 455 STAGE 1
    69 GS 400 4 SPEED CONVERTIBLE W/70 455 STAGE 1 ONE OF 213
    69 SPORTWAGON 350
    89 ELECTRA ESTATE WAGON LOADED

 

 

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