Engine gaskets - grease, sealant or dry?

  1. Pigeon_Droppings2 Member

    Messages:
    2,234
    Location:
    london
    I aways stick the blue then gasket then blue on water pumps...given the amount of hassle involved to pull it all apart it's not worth the risk. I never reuse paper gaskets when they are holding back liquids anyway so prefer a fit and forget route.

    Next cork gasket I do am going to try etc sealant to try it out.
     
    stuvy likes this.
  2. roofman

    roofman Purveyor of fine English buckets and mops

    Messages:
    6,862
    Location:
    North West
    Always used Yamabond when splitting cases on bikes and cars, same thickness as a business card put on with a finger tip.
     
  3. bricol Member

    Messages:
    896
    N.Yorks, UK
    [QUOTE="Next cork gasket I do am going to try etc sealant to try it out.[/QUOTE]

    I got fed up with the cork lower sump pan gasket squeezing out, or loosing compression and the bolts backing off and leaking - and I wasn't paying the 30 quid plus specialist wanted for an "upgraded" one. Some measuring and some CAD work - local gasket place supplied a rather more modern alternative for £6 - no squeezing out, so losing compression. I just forget the name of the stuff right now!
     
    stuvy likes this.
  4. Pigeon_Droppings2 Member

    Messages:
    2,234
    Location:
    london
    Post it when you remember please....the nissan figaro needs the sum gasket doing. Had a look at the gasket and it's basically 2 rubber bits and 2 cork bits....so a 4 part gasket on a sump! I'm thinking I have more chance of getting it to seal with a tube of bath sealant!
     
  5. mangocrazy

    mangocrazy Italian V-twin nutjob

    Messages:
    718
    Location:
    Sheffield, UK
    The engine (and the exhaust system!) is definitely the star of that stratospherically-priced car... Guy's work is immaculate and the exhaust is a thing of beauty.
     
  6. Bill Edwards Member

    Messages:
    4,907
    Location:
    Scarborough, North Yorkshire
    No, RTV is designed to replace gaskets altogether.

    If you want to make sure a paper gasket doesn't leak, you apply something suitable for dressing gaskets like Hylomar or Wellseal.

    Different products for different jobs.
     
  7. bricol Member

    Messages:
    896
    N.Yorks, UK
    I know of more than one engine tuner with an opinion about him ;)
     
  8. bricol Member

    Messages:
    896
    N.Yorks, UK
    Flexseal AF163.

    Of course,with a pressed steel pan, the flange has to be pretty flat and true - dress out all the years of overtightened screws, dents, etc.

    I've not got it back in yet, so no comment as yet as to it's performance.

    Ford crossflow sump pan is two lengths of cork, two rubber bits over the ends of the crank at each end of the block - that has to have some silicon in the gaps to try to keep most of the oil in.

    I now accept the one on my Dutton trials car leaks and keeps the outside of the sump rust free ;)
     
    zx9 likes this.
  9. Cobbler

    Cobbler Codger bodger

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    Location:
    Gloucestershire UK
    Did you come down & do the Clouds?
     
  10. Pigeon_Droppings2 Member

    Messages:
    2,234
    Location:
    london
    Nissan sounds similar to the ford...actually sounds exactly same.

    My plan was to glue the seal to the block with RTV...there is an upgrade seal available that is 1 piece....but at £50 that's going to wait until my euromillions numbers come up!
     
  11. bricol Member

    Messages:
    896
    N.Yorks, UK
    I have done it - but quite some years ago - its a long way from up here.

    Last Classic was last years Yorkshire - when my novice co-driver called a restart - shame it was a Class 8 and not for our Class 7. Dropped from out-right win to 10th overall . . . 30 seconds of "grrrrrrr . . ." and then carry on enjoying a good trial on a sunny day ;)

    (teeth only slight gnashed as I type this . . . ;) )
     
  12. Cobbler

    Cobbler Codger bodger

    Messages:
    4,643
    Location:
    Gloucestershire UK
    Been there, done that, 1st all the way to the last section, on the last round they tightened it up & I cocked it up! We came first the previous year, so we gave someone else a chance :(
     
  13. mangocrazy

    mangocrazy Italian V-twin nutjob

    Messages:
    718
    Location:
    Sheffield, UK
    I'm sure most of them do... :laughing: I think the majority would acknowledge the quality of the work, but roll their eyes at the cost. He's also pretty dismissive of most other tuners, which doubtless doesn't help.
     
  14. bricol Member

    Messages:
    896
    N.Yorks, UK
    He took a Fiat/Lancia specialist operating out of a set of railway arches in SE London to court a decade or two ago for criticising a few things in the first edition of his little twincam book (not the whacking great red one) - which of course forced the arch guy to look in more depth at every page of the book . . . he found a fair few more problems . .. arch guy didn't lose ;)
     
    zx9 likes this.
  15. normspanners Member

    Messages:
    8,850
    northwales
    I use wellseal it stays fluid its what is used on rover k series cam carriers they have no gasket but if you use a setting sealer it can block oilways I have literally done hundreds of k series I used to do about 3 -4 a week for years and never had a leak if it is a paper gasket i use well seal on the bit that comes off the engine and grease on the block then when you take it apart the gasket comes off clean.
    Stag.Wellseal Jointing Compound
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    From £8.22


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    Description

    The complete answer to sealing problems on machined faces. Non-flammable, has easy partability and is non-hardening. Formulated to give the best possible sealing performance under a wide variety of conditions. Can be used to seal threaded connections as well as flat- faced joints and can be used with or without a gasket, depending upon the design of the assembly. Highly resistant to the majority of commonly used fuels, lubricants and coolants and is non-corrosive and free from abrasive fillers.
     
  16. Cobbler

    Cobbler Codger bodger

    Messages:
    4,643
    Location:
    Gloucestershire UK
    I remember my father using Wellseal on something in the early to mid fifties, his tin was yonks old then, left over from when he worked on aero engines I would guess. I thought it was a long gone old fashioned sealant, never heard of it since, but all of a sudden pops up again as the stuff to use.
     
  17. normspanners Member

    Messages:
    8,850
    northwales
    I always have some to hand when my tube gets close to end i get another, my engine man buys it by the box!
    One of the best IMO and VERY easy to clean off. after its been used
     
    Cobbler likes this.
  18. Dcal Member

    Messages:
    1,611
    Location:
    Antrim Northern Ireland
    he's certainly an odd fish
    You mean the most expensive book I ever bought is full of "problems"
    I have have the "whacking great red one" which in fairness is not a bad read.
     
  19. mangocrazy

    mangocrazy Italian V-twin nutjob

    Messages:
    718
    Location:
    Sheffield, UK
    Yes, I've got the 1996 'Modifying and Tuning Foat/Lancia Twin-Cam engines' book (pictures in B/W), and his updated 2010 edition, which is bigger (in every way) and has colour photos. He is an odd fish, I agree but he's the only tuner I know who has published his knowledge about these engines. Most tuners prefer to keep their secrets secret.
     
    Dcal likes this.
  20. bricol Member

    Messages:
    896
    N.Yorks, UK
    Not the big red one - that's an interesting book, although I can't comment on how good it is as I stopped with the idea of modifying my integrale and returned it mostly to standard when the prices of transmission parts went even further through the roof.

    It was the first little one with a picture of Betas on the front if I remember correctly.
     
    Dcal likes this.
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