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    Oil leak

    Ok this is probally a NOOB (?) but I have a oil leak at the top rear of the motor. I replaced both valve cover gaskets figuring that was it but no. So I took to a shop they said it could be the upper intake gasket. It's leakking about a Qt. a week. My (?) is there a oil line somewhere near that area? Just seem like alot of oil leak to be a gasket!! Thanks for any help @ all...Don
    91 w/ 5.0 with eibach springs for a SS Impala ,hd police shocks on front w/big brake uprade,rear shocks for F-150 HD. Dual s w/ glass packs, 15X8 A/R Wheels 5% Tint on rear.http://www.supermotors.org/vehicles/...l.php?id=11699sigpic

    #2
    I would say most likley it is the rear intake gasket it can leak pretty bad I think gadget's old motor leaked from the rear intake

    -gabe

    1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
    2006 Lincoln Town Car Signature. Stock for now
    1989 Ford F-250 4x4 much much more to come, sefi converted so far.
    1986 Toyota pickup with LSC wheels and 225/60/16 tires.
    2008 Hyundai Elantra future Revcon toad
    1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

    please be patient, rebuilding an empire!

    Comment


      #3
      yes it can pour out fast from there...

      get the nice felpro blue rubber replacement gaskets, they have a fat lip to keep them in place while you install the manifold
      Pete ::::>>> resident LED addict and CFI defector LED bulb replacements
      'LTD HPP' 85 Vic (my rusty baby) '06 Honda Reflex 250cc 'Baileys' 91 Vic (faded cream puff) ClifFord 'ODB' 88 P72 (SOLD) '77 LTDII (RIP)
      sigpic
      85HPP's most noteworthy mods: CFI to SEFI conversion w/HO upperstuff headers & flowmasters P71 airbox Towncar seats LED dash light-show center console w/5 gauge package LED 3rd brake light 3G alternator mini starter washer/coolant bottle upgrade Towncar power trunk pull underhood fuse/relay box 16" HPP wheels - police swaybars w/poly rubbers - budget Alpine driven 10 speaker stereo

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        #4
        quart every 400 miles mine would dump out of the back of the intake. Makes a hell of a mess. Its the cork "china wall" gasket that fails and pushes out, and you end up with a gap between the intake and the engine block. The oil just pours out of the gap. Its sort of a messy job to replace it, but its not exactly hard. The only thing thats an absolute must, if you do this the oil must be changed after re-assembly and before starting the motor. It will dump some coolant into the motor, and coolant is very bad for bearings to run on.
        86 Lincoln Town Car (Galactica).
        5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

        91 Lincoln Mark VII LSC grandpa spec white and cranberry

        1984 Lincoln Continental TurboDiesel - rolls coal

        Originally posted by phayzer5
        I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

        Everything looks like voodoo if you don't understand how it works

        Comment


          #5
          Thanks to all for the help. I guess the guys at the shop was not tryyng to pull the wool on me so to speak..Thanks gadget for the info on the tear down..I will change the oil & filter. I should of done it when I replace the valve covers. OH WELL (WTF)
          thanks again.....Don
          91 w/ 5.0 with eibach springs for a SS Impala ,hd police shocks on front w/big brake uprade,rear shocks for F-150 HD. Dual s w/ glass packs, 15X8 A/R Wheels 5% Tint on rear.http://www.supermotors.org/vehicles/...l.php?id=11699sigpic

          Comment


            #6
            As long as you don't get any chunks in from changing the valve covers, its not impending doom or anything, though its not a bad idea. A load of coolant in the oil is a death pill for bearings though. I did it to my car, was in a hurry and didn't change the oil. 50 miles later, zero oil pressure and it had a rod knock.
            86 Lincoln Town Car (Galactica).
            5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

            91 Lincoln Mark VII LSC grandpa spec white and cranberry

            1984 Lincoln Continental TurboDiesel - rolls coal

            Originally posted by phayzer5
            I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

            Everything looks like voodoo if you don't understand how it works

            Comment


              #7
              That's something I will try not to do.Sometimes a small shop vac comes in handy to get rid of any lose chucks.Thanks again....Don
              91 w/ 5.0 with eibach springs for a SS Impala ,hd police shocks on front w/big brake uprade,rear shocks for F-150 HD. Dual s w/ glass packs, 15X8 A/R Wheels 5% Tint on rear.http://www.supermotors.org/vehicles/...l.php?id=11699sigpic

              Comment


                #8
                I believe that oil leaks are very common on these cars. As my engine began to age, I developed an oil leak.



                1981 Ford LTD Crown Vic (FOR SALE!)
                1979 Pontiac Firebird

                Comment


                  #9
                  20 year old cork gaskets.... they all go bad after a while. Just gotta change them as they fail. Its what we get in lieu of car payments; repair costs.
                  86 Lincoln Town Car (Galactica).
                  5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                  91 Lincoln Mark VII LSC grandpa spec white and cranberry

                  1984 Lincoln Continental TurboDiesel - rolls coal

                  Originally posted by phayzer5
                  I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                  Everything looks like voodoo if you don't understand how it works

                  Comment


                    #10
                    My rear lower intake seal crapped out as well. Apparently, the cork peice slid out when they were assembling it new. The gasket was still there in one peice, but part of it was pushed out, and wasn't crushed at all. It was actually blowing out the back, all over the firewall and onto the top of the tranny. I lost one and a half quarts of oil over about 150 miles. It has me fooled into thinking it was a tranny leak for a while.

                    I was careful and didn't get any coolant or fuel into the engine. I also laid three layers of clean rags in the lifter valley when I was scraping gaskets, lifting each out after I finished. Then I vacuumed the lifter valley.

                    When removing the old gaskets, make sure you get all the old ones off. First, you can use a gasket scraper, or knife. Then, I took a drill with a wire brush on the end and polished up the mating surafaces of the heads and lower intake. After that, I took a razor blade to what little was left.

                    It is also a good idea to put a very thin coat of RTV around the coolant passages, especially if the surface is pitted.

                    And I'll agree, the Fel-Pro gaskets with their lips prevent the front and rear gaskets from sliding around. They make it so much easier than gluing the stupid cork things. Plus, they are rubber and not cork.
                    1990 Country Squire - under restoration
                    1988 Crown Vic LTD Wagon - daily beater

                    GMN Box Panther History
                    Box Panther Horsepower and Torque Ratings
                    Box Panther Production Numbers

                    Comment


                      #11
                      Originally posted by Tiggie View Post
                      My rear lower intake seal crapped out as well. Apparently, the cork peice slid out when they were assembling it new. The gasket was still there in one peice, but part of it was pushed out, and wasn't crushed at all. It was actually blowing out the back, all over the firewall and onto the top of the tranny. I lost one and a half quarts of oil over about 150 miles. It has me fooled into thinking it was a tranny leak for a while.

                      I was careful and didn't get any coolant or fuel into the engine. I also laid three layers of clean rags in the lifter valley when I was scraping gaskets, lifting each out after I finished. Then I vacuumed the lifter valley.

                      When removing the old gaskets, make sure you get all the old ones off. First, you can use a gasket scraper, or knife. Then, I took a drill with a wire brush on the end and polished up the mating surafaces of the heads and lower intake. After that, I took a razor blade to what little was left.

                      It is also a good idea to put a very thin coat of RTV around the coolant passages, especially if the surface is pitted.

                      And I'll agree, the Fel-Pro gaskets with their lips prevent the front and rear gaskets from sliding around. They make it so much easier than gluing the stupid cork things. Plus, they are rubber and not cork.
                      your right ben make sure that you put rtv in the corners otherwise it will leak when tighting it down

                      1989 mercury grand marquis gs / 2014 ford focus s daily driver
                      302 lopo with ho upper/ aod with trans go shift kit
                      k code 3:55 posi rear/big brake swap tow package car

                      Comment


                        #12
                        I've also used the rubber FelPro ones with good luck. Those cork things suck. If you buy a reman Jasper longblock, you get the intake gaskets and a tube of RTV to use on the ends. They quit bothering with the stupid cork things.

                        Also, a little tip for easier re-assembly, find yourself some longish 5/16" bolts and cut the heads off. These need to be long enough to stick up past the lower intake by an inch or so. Thread them into the heads, set the gaskets in place, and use the bolts as guide pins to set the lower intake in place without moving anything.
                        86 Lincoln Town Car (Galactica).
                        5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                        91 Lincoln Mark VII LSC grandpa spec white and cranberry

                        1984 Lincoln Continental TurboDiesel - rolls coal

                        Originally posted by phayzer5
                        I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                        Everything looks like voodoo if you don't understand how it works

                        Comment


                          #13
                          Yeah, I've never really understood the cork end gaskets...I can't ever make 'em fit! Certainly on an LA 318 where the intake bolts go in at an angle they're totally useless because you can't get the intake down low enough to make the bolt holes line up.

                          Interesting that there is a rubber gasket for those, though. I'll have to try to find those when I do my 4 bbl swap next spring. When I put it back together this time I just used RTV alone, which has worked fine in the past, but this time I guess I didn't get quite enough at the front, and it leaks out of there. Oil consumption has gone up a fair amount and of course it's making a fine mess of my freshly painted parts.

                          2001 Ford Crown Victoria P71 - "The Fire Engine"
                          1985 Lincoln Town Car Signature Series
                          But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. Romans 5:8

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