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    getting head resurfaced

    So i am getting my m20 b25 head resurfaced and i was wondering if there is any way to make all the valves sit below the surface of the head without taking out the cam

    #2
    Originally posted by Dirty325ix View Post
    So i am getting my m20 b25 head resurfaced and i was wondering if there is any way to make all the valves sit below the surface of the head without taking out the cam
    yes, just knock the rockers out of the way. they slide when the clips are removed.
    Last edited by Cabriolet; 04-17-2013, 08:49 AM.
    Much wow
    I hate 4 doors

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      #3
      Unless this is a really low mileage head, like less than 50k, it would be a good idea to have the valves ground and new seals installed while the at the shop for surfacing.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

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        #4
        he cant regrind the valves at his shop but he said he maybe able to send them away....for a fee
        so once I take the clips off and loosen the rockers I can just pull the valves out.
        how to you take the seals out/ replace them...just poke it out and push a new one back in

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          #5
          To grind the valves the head must be stripped down to the casting. Both the valves and the seats must be ground.
          The car makes it possible, but the driver makes it happen.
          Jim Levie, Huntsville, AL

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            #6
            Google it...there are many good videos showing you how to grind the valves & seats.

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              #7
              what you do dont lap them except lightly to check the contact. lapping is not for fixing irregularities
              89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

              new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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                #8
                Originally posted by Dirty325ix View Post
                he cant regrind the valves at his shop but he said he maybe able to send them away....for a fee
                so once I take the clips off and loosen the rockers I can just pull the valves out.
                how to you take the seals out/ replace them...just poke it out and push a new one back in
                So this shop has a resurfacing machine but can't grind valves?

                Find a new machine shop and do it right!
                BimmerHeads
                Classic BMW Specialists
                Santa Clarita, CA

                www.BimmerHeads.com

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                  #9
                  Originally posted by MR 325 View Post
                  So this shop has a resurfacing machine but can't grind valves?

                  Find a new machine shop and do it right!
                  I live in a super small town and the city is 4 hours away

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