Oil leak

Discussion in 'Boss 302 and S197 Technical Forum' started by 03GTinFLA, May 10, 2019.

  1. 03GTinFLA

    03GTinFLA TMO Intermediate

    Messages:
    24
    Likes Received:
    12
    Joined:
    Apr 19, 2015
    7C36F2E8-500D-4552-85C2-32BAEB7A3FE5.jpeg 5E84DDC0-55C4-4455-84E4-6DF28ACE4C5D.jpeg D03B423F-9F99-41FA-86B7-FB31BF604A57.jpeg 662EFDF6-2E2F-4895-A1FE-12785075B1FA.jpeg
    2013 GT track pack with 36k.
    I pulled the car out to clean up my garage and noticed some oil spots on the floor. I haven’t been under the car since having CJ, oil pump gears, stainless works long tubes (used) and ATI balancer installed. I noticed two things. First was the passenger side header and second was the oil leak which seems to be coming from the back of the oil pan or rear main seal. I’m just guessing as it is all between the trans and back of the engine area. I cleaned the floor, did some spirited driving then let it sit overnight and it left one maybe two drops.
    Any insight is appreciated. My specific questions are
    1). Can/should I still run the Sebring HPDE in 2 weeks?
    2). Guesses as to the source of the oil leak and thoughts on the fix.
    3). Is there anything that can be done with the passenger side header that is smashed up against the front control arm?
     
  2. 302BOB

    302BOB TMO Addict

    Messages:
    5,309
    Likes Received:
    1,328
    Joined:
    May 4, 2011
    Location:
    Fairfield County, Connecticut
    My first thought reading this is maybe the smashed header and oil leak could be related in some way....when something happens to one thing other things may be affected.
     
  3. 2012-Boss

    2012-Boss TMO Addict

    Messages:
    683
    Likes Received:
    277
    Joined:
    Jan 4, 2013
    I would guess that the leak may be the oil pan gasket. If they followed the manual for oil pump removal and installation it calls for the pan to be removed.

    Try to re-torque the pan fasteners per the manual. Call your shop and ask if they removed the pan. If they did and re-tightening the fasteners doesn’t fix the problem, replace the gasket.

    If it’s the rear main seal, the motor will have to come out. The rear main also requires some Ford specialty tools.

    As far as clearance for the header, try loosening the motor mounts at the k-member and see if you can nudge it over toward the drivers side. The top of the motor mounts on the k-member side can also be loosened and shifted slightly. Other options are dimple the header or replace the rear bushings with a smaller aftermarket set.

    The leak is not bad enough right now to not go to the track. I would be more concerned about heating up that fluid filled control arm bushing.
     
    ArizonaBOSS likes this.
  4. Grant 302

    Grant 302 OPM Spent: $587,402 Moderator

    Messages:
    6,688
    Likes Received:
    1,662
    Joined:
    Nov 23, 2011
    Location:
    In the OC
    I wouldn't run with either of those issues.

    I think if the rear main was leaking that oil would be coming out from behind the inspection plate. My guess is the pan gasket.

    Good luck with the fixes.
     
    TMSBOSS likes this.
  5. 03GTinFLA

    03GTinFLA TMO Intermediate

    Messages:
    24
    Likes Received:
    12
    Joined:
    Apr 19, 2015
    Thank you all for the replies.
    They did have the oil pan off so I’m cleaning everything up and retightening them this morning. Fingers crossed. I’ll have to wait till next weekend to try adjusting the motor for header clearance but I’ll keep you updated.
     
  6. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

    Messages:
    8,169
    Likes Received:
    1,763
    Joined:
    Dec 6, 2010
    Location:
    Arizona, USA
    Also check the front of your engine for similar oil residue/dirt. If they didn't get the crank snout seal installed correctly it will create this type of oil residue all over the engine. Ask me how I know...
     
  7. Duane Black

    Duane Black TMO Advanced

    Messages:
    153
    Likes Received:
    88
    Joined:
    Jan 26, 2019
    Location:
    Durham, NC
    Very few people have oil leak issues who didn't mess with the pan. I'd start there
     
  8. TA28

    TA28 TMO Intermediate

    Messages:
    59
    Likes Received:
    11
    Joined:
    Jan 24, 2017
    Location:
    ny
    differant motor but my fr500c had rear main leak.car sat 1 2 yrs after racing.oil got everywhere came out top vent and all in top valley area. coyot and mod use replate to hold seal.
    i was able to repair it w pulling trans.new mmr plates and seal.
     
  9. 2012-Boss

    2012-Boss TMO Addict

    Messages:
    683
    Likes Received:
    277
    Joined:
    Jan 4, 2013
    I forgot to mention that the other option was pulling the transmission to access the seal and retaining plate. But, you still need a specialty tool to pull the seal and install the new one.

    Theses are the links to the tools from Freedom Racing:

    Seal Puller: http://www.freedomracing.com/crankshaft-rear-oil-seal-remover-303-519-t95p-6701-eh.html

    Seal Installer: http://www.freedomracing.com/rear-main-seal-installer-set-303-1250.html

    Driver Handle: http://www.freedomracing.com/205-153-t80t-4000-w-adapter-driver-handle-alt-stallion-st-214.html

    I do not know where to find the tools you would need on the MMR site. Having said that, some of their tools look to be the same as Freedom's and some are their own design.
     
    Last edited: May 14, 2019

Share This Page