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850 head gasket size?

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    850 head gasket size?

    Hi all, tapping your vast amount of knowledge again. I have bought a gasket set and the cylinder holes measure 72mm, the 850 has a bore of 69mm. Is the extra 3mm an allowance for the crush as the head is torqued down or have i got an 1100 head gasket? The Hi Level gasket part no is 997920 and this is correct on the Hi Level website. Cheers.

    #2
    Not really sure about HI Level gaskets, around here it is HIGHLY recomended that you use a OEM gasket. They are far superior than the after market gaskets
    1984 GS1100GK newest addition to the heard
    80 GS 1000gt- most favorite ride love this bike
    1978 GS1000E- Known as "RoadKill" , Finished :D
    83 gs750ed- first new purchase
    85 EX500- vintage track weapon
    1958Ducati 98 Tourismo
    “Remember When in doubt use full throttle, It may not improve the situation ,but it will end the suspense ,
    If it isn't going to make it faster or safer it isn't worth doing

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      #3
      Originally posted by hjfisk View Post
      Not really sure about HI Level gaskets, around here it is HIGHLY recomended that you use a OEM gasket. They are far superior than the after market gaskets

      i agree...i picked up a N.O.S headgasket for my 850 for 30 bucks on ebay

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        #4
        If you look at the Suzuki parts manual you will see that Suzuki superceeded the 850 head gasket with the 1100G version. Apparently they don't think using the larger bore gasket on the smaller engine is a problem. Regarding HiLevel gaskets, sounds risky. As the others have suggested, OEM gaskets are the safe bet. Lots of members around here have had poor results using aftermarket gaskets. False economy.
        Ed

        To measure is to know.

        Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

        Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

        Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

        KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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          #5
          Originally posted by Matt Lund View Post
          Hi all, tapping your vast amount of knowledge again. I have bought a gasket set and the cylinder holes measure 72mm, the 850 has a bore of 69mm. Is the extra 3mm an allowance for the crush as the head is torqued down or have i got an 1100 head gasket? The Hi Level gasket part no is 997920 and this is correct on the Hi Level website. Cheers.
          That 72mm head gasket will work fine on your 850.

          The purpose for making just the 72mm gasket is so that it can be used on every compatible engine, instead of having to make three different gaskets for each bore size. (69-70 and 72mm)
          De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

          http://www.thegsresources.com/_forum...35#post1625535

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