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Oil leak problem? should i look for new F22?

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    #1

    Oil leak problem? should i look for new F22?

    I just purchased my 91 accord while i was in houston attending school. I managed to get it back to Minnesota this summer but im having an issue with an oil leak. It leaks from the vaulve cover and oil pan gaskets. I have replaced both gaskets 2 times now, they seem to last about a week, ( following touqing order and touqing spec) each and every time. what might I do, and what might be the cause?

    PS: engine up grades as follows turbo, intercooler, burnable ecu, stage 3 clutch, oil catch bottle (breather tube) turboex blow off, engine rebuild 15,000, est. Oil pressure stable at 50 lbs, at operating temp and at about 4,000 rpms.

    * F22A4: 1990-1991 Accord, 2.2 liter (2156 cm³), MPFI fuel system, 130 hp (97 kW) @ 5200 rpm, 142 lbf·ft (193 N·m) @ 4000 rpm, 8.8:1 compression, oil pressure 50 psi (340 kPa) @ 3000 rpm.

    * indicating specs taken from specs thread
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    #2
    I haven't tuned on turbos but I'm suspecting the forced induction is causing increased pressure maybe in the crankcase? Causing oil to push out and ruin the seals...

    But that's just a wild guess on my part...other then that I'd suspect warpage or heat buildup...any one else got better info?
    ____

    Comment

      #3
      Im thinking head gasket or rings. Those are the only 2 that come to mind that would allow enough pressure to bypass to blow out a seal. In non boost conditions you should be burning oil too. I have seen bad rings blow out pan gaskets on Buick Grand National Turbo's.

      Hope this helps...
      Verde's clean 92 CB7

      Comment

        #4
        Get a higher pressure gasket, Or use some Silicone on the old one, take off the cover, clean off the gasket REALLY GOOD, put some RTV on the valve cover, and on the gasket, put it on the head for about 5-10 mins, then torque it down, leave it over night. Do the same to the spark plug tube seals. Your turbo could be blowing it as well. i hear the HONDA dealership valve cover gasket is the best one to use.
        90 Accord EX F22a1 Auto R.I.P.
        2011 Mazda 3 Hatch 2.5L GS sport HELLO!

        Comment

          #5
          so long as the head gasket and rings are good this shouldn't happen correct? Unless he's getting some pressure into the valve cover gasket...

          Like I said I haven't looked into turbo setups (and I haven't tuned any)...so this may seem like a dumb statement and obvious...and not trying to say you don't know how to build a turbo...but...

          since there are two crank case vent tubings, pcv and the one to the left of it. (course the numerous vacuum lines would need to be addressed but they don't connect to the valve cover)...you would need to address those.

          I figured you'd just use one way check valves...but if so...those could be bad.
          (again I haven't looked into this just going off what I'm thinking)

          So how did you handle those?
          ____

          Comment

            #6
            Have you checked the Distributor O-ring? i just replaced mine today, which was turned into a hard plastic over time instead of rubber, it broke apart upon removal, so if you have oil underneath the distributor, then that's the likely cause, takes 5 min to put on.

            member's ride thread
            93' EX Coupe H22A w/ P2T4 Sir 5spd 191whp 155 wtq
            99' Lexus LS400 157k VVTi V8 gets up & goes...new DD
            91 Accord SE 176k
            97' Honda Odyssey 199k miles...$485 spare van for my parents

            Comment

              #7
              I agree with the comment on the rings. If you are getting blow-by because of your turbo, it could be pushing on the pan gasket.
              1990 Accord LX Sedan, B-49M

              Comment

                #8
                Ill check into you helpfull

                I been planing on testing rtv copper hi temp ( heard it holds high pressure) im starting to lean tward a newer f22 if i do do that is their going to be any obvious bolt pattern diffrences in the ehaust maifold ( turbo purpose only) and im also thinking on warpege caused by excessive heat due to lack of only having a single cooling fan ( anyone know of a nice slim line dual cooling fan for thhis year model (91). thanks again, sparkyo2

                Comment

                  #9
                  I would double check to see if there is excessive pressure pushing on these gaskets. Did you make sure the gasket seat surface was clean and smooth and did you apply any hondabond?


                  "You've done more threatening prescription drugs..."
                  "the character of a man can be judged by how he takes his criticism"
                  "Quoting yourself is like, masturbation" -Starchland

                  Comment

                    #10
                    How is your catch can hooked up?

                    The New-ish Ride
                    My old Ride
                    Hear my Vtak!!!
                    MK3 Member #3
                    I piss off people for fun.
                    IA 08 Sunburn Victim #1

                    Comment

                      #11
                      Originally posted by djphonics
                      I agree with the comment on the rings. If you are getting blow-by because of your turbo, it could be pushing on the pan gasket.

                      This is the most feasible answer....

                      Do a compression test on your cylinders and you will know for sure.

                      What psi are you running? You sure that the right rings were used in the rebuild? They could have used the wrong sized rings if they had to hone out grooves or anything like that in the cyl walls...

                      Check out ESP engine mount kits for your CB7!!!

                      Comment

                        #12
                        I have not been into the engine as of yet, oil catch is connected to the breather on the valve cover, If i dont buy new, total overhaul, pistons rings cam crank rebore engine have it milled and surfaced port and polish. I mean total overhaul. So what im going to do is test the rtv, see if that holds. than ill test compression. (what is the comression for f22, specs listed at the top). again thanks for all the help. so far i love the car but it has some quirks. but that is one reason i bought it. if it was easy it would be no fun. cant wait to show you guys and gals what you all helped me accomplish.

                        Comment

                          #13
                          Originally posted by Aeromech
                          This is the most feasible answer....

                          Do a compression test on your cylinders and you will know for sure.

                          What psi are you running? You sure that the right rings were used in the rebuild? They could have used the wrong sized rings if they had to hone out grooves or anything like that in the cyl walls...
                          would the pressure be pushing the other way?


                          "You've done more threatening prescription drugs..."
                          "the character of a man can be judged by how he takes his criticism"
                          "Quoting yourself is like, masturbation" -Starchland

                          Comment

                            #14
                            Lol

                            Comment

                              #15
                              Does sound like too much crankcase pressure, and must be from blow-by gasses (i.e. rings aren't sealing as well as they should). The easy / quick / cheap remedy for the symptom (not the disease) is to fit an additional large diameter breather tube to the cam cover (1" ID should do it). Vent this tube into a catch tank somewhere (old oil bottle will do fine if you're not too worried by aesthetics). This should ease the internal pressure and reduce or eliminate you're leaks, assuming they actually are caused by crankcase pressure.

                              If you're really fussy you can fit a filter into the neck of the catch tank to prevent the remote possibility of any dust being drawn into the engine through the breather tube (tubular intake filter from a lawn mower works well), but it would be unlikely for anything to go into the engine as pressure is coming out not in.

                              PS. Avoid using silicone sealants, they can gum up the lubrication system in places like pressure relief valves, and if bits of silicone ever go through the filter bypass instead of being caught in the filter can do real damage.
                              Regards from Oz,
                              John.

                              Comment

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