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R the 2 and 4 valve heads interchangable

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    #1

    R the 2 and 4 valve heads interchangable

    If this guy will call me back I will have a 87 gs1000 and was wondering if anyone knew if the 2 valve engine will accept the 4 valve head?? I have a 82 gs1100 cruiser shaft drive.
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    #2
    no
    ...........................
    1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
    1985 GS1150ES stock with 85 Red E bodywork.

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      #3
      Even if it would somehow bolt on you would have a problem with valve pockets in the pistons. A simple piston swap might take care of that but Chef gave it to you short and sweet, no.

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        #4
        Originally posted by Billy Ricks View Post
        Even if it would somehow bolt on you would have a problem with valve pockets in the pistons. A simple piston swap might take care of that but Chef gave it to you short and sweet, no.
        studs are in different places....

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          #5
          Originally posted by sparki View Post
          studs are in different places....
          No doubt, just saying even if it would bolt on there are other problems that would have to be addressed. It's not as simple as just dropping a head on. Cam sprockets are probably different too which would open another can of worms.

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            #6
            Ok fellas Thanks for crushing my dream...just kidding, i figured there would b a big difference!

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              #7
              Originally posted by Billy Ricks View Post
              No doubt, just saying even if it would bolt on there are other problems that would have to be addressed. It's not as simple as just dropping a head on. Cam sprockets are probably different too which would open another can of worms.
              yes... a lot of difference but still a moot point if nothing can be made to fit over the studs wouldn't ya say

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                #8
                There were some folks that adapted the air/oil cooled GSX-R head to the GS1100/GS1150 engine. My understanding is that it really didn't produce a significant improvement in performance for the effort.

                Hap

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