92-93 1340 EVO Base Gasket

Discussion in 'General Harley Davidson Topic' started by flhx07, Dec 21, 2012.

  1. flhx07

    flhx07 Member

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    I'm getting ready to do a 92-93 1340 EVO Base Gasket. I have a 1999 HD Shop Manual. Any and all help would be greatly appreciated. I do have very good shop skills and knowledge.

    Thank you in advance.

    Go Navy Beat Army
     
  2. Jack Klarich

    Jack Klarich Expert Member

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    Check the case studs, make sure they are tight, if in doubt replace them. Follow all Torque with Quality gaskets like James or Cosmetic:s
     
  3. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    Nothing particularly difficult in doing this job if you have some mechanical experience and suitable tools for the job
    The worst bit of the job is cleaning old gasket from the lower rocker cover and the base gasket
    i would hope that you are using all new gaskets all the way check carefully on the new head gasket as the newer gasket requires the o rings to be removed from the cylinder dowels
    If you have any questions just ask i have the 91/92 softail factory service manual at hand

    Brian
     
  4. Jack Klarich

    Jack Klarich Expert Member

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    Harley Davidson Community Here is a link to Cosmetic Gaskets As Brian said the gasket surface prep is the hardest part here, take care not to nick the sealing surfaces Gasket Removers Check here for products for removing the gaskets
     
  5. Breeze3at

    Breeze3at Well-Known Member

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    Is your '99 shop manual for Softails? Other '99's were twin cams, and have differences in reassembly procedures.
     
  6. Jack Klarich

    Jack Klarich Expert Member

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    Very good point Breeze, I would add as long as you are this far might as well complete the job with new rings and a fresh valve job if it is in your budget. Pay attention to the thickness of the gaskets you will use it can make a difference in compression ratio
     
  7. flhx07

    flhx07 Member

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    Yes the manual is an HD 1999 Soft Tail Service Manual.

    The 1994 FLSTF only has 14k miles on it. The engine has never been opened before. I will be using James base and head gasket with OEM rocker gaskets. Would you recommend removing and replacing the rear rocker arm push rod cover gaskets too?

    I also plan on leaving the piston in the cylinder. I was thinking I only need to remove one wrist pin retaining clip...."But" should I replace both of them I am replacing the clip that I removed. Should I remove and replace both clips?

    Do you recommend removing the top and front engine mounts to lower the engine? It's the rear base gasket that I am replacing.

    I'm doing this for a good friend of mine and I want to ensure I do a great job for him so any other comments or suggestions while I have broke down that far would really be appreciated.

    Thank you

    Would you recommend using a "very thin" coat of Hylomar Uniblue on the base gasket?
     
    Last edited by a moderator: Dec 23, 2012
  8. Jack Klarich

    Jack Klarich Expert Member

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    For a leak free job I would replace all the gaskets in the kit, follow the instructions supplied. Make sure ALL surfaces are clean and dry of all materials. As far as the mounts, any thing to get access to the rear bolts will be a big plus IMO The wrist pin C clips, I would replace ALL of them and make sure they are seated. I have pulled cylinders off with out removing pistons, you have to be careful the pistons do not hit the cylinder studs
     
  9. flhx07

    flhx07 Member

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    If you were doing the base gasket would "you" remove the piston or would you keep it attached to the connecting rod? I'm trying to minimize the possibility of things going wrong to ensure a quality repair.

    Thank you Jack
     
  10. Breeze3at

    Breeze3at Well-Known Member

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    If you have 4 hands, I'd prefer to leave the piston in the cylinder. I just feel better not having them exposed and the rings getting moved around. As the Softail has a solid mounted engine, I don't see the benefit of loosening the motor mounts (except the frame to heads "y" brace). If you have a problem getting the rear rocker cover off, turn the engine over so the exhaust valve is open. That will give you a little more clearance. When reassembling the rocker box be real careful setting one piece on top of the other. Those skinny gaskets slip easy and you will soon be leaking.