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head repair

This is a discussion about head repair within the Kawasaki ZX12R-ZX14 section, where you will Kawasaki Kings of street and strip; i have a zx12 with a nice head that has been worked and it droped a valve in #1 cylinder is this a good are bad thing to get it repaired i heard differnt storys

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    Default head repair

    i have a zx12 with a nice head that has been worked and it droped a valve in #1 cylinder is this a good are bad thing to get it repaired i heard differnt storys its a waste of money because they dont never be back like they was and more likly to drop a valve again and some say that its great just need some input on this. thanks in advance

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    talk to rodney williford you will get a straight up answer...
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    they can be repaired to just as good as new..
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    Quote Originally Posted by STREETDRAG View Post
    talk to rodney williford you will get a straight up answer...
    ok thanks

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    Quote Originally Posted by Cycle Concepts View Post
    they can be repaired to just as good as new..
    so do you do head work? and i heard the seats be moving and will never seat tight as stock

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    i have seen several repaired with no issues, i suppose if its not done right there could be issues. lots of shops out there that are capable of your repairs. go ahead and have oversized bronze seats in if that would make you feel more comfortable with the seat issue
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    Quote Originally Posted by peanut r1 View Post
    so do you do head work? and i heard the seats be moving and will never seat tight as stock
    Yes we do..the only reason that the seat would move around after the repair is because they were installed too loose(not enough interference on the fit)...some can install them correct and some can't..
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    Quote Originally Posted by Moody View Post
    i have seen several repaired with no issues, i suppose if its not done right there could be issues. lots of shops out there that are capable of your repairs. go ahead and have oversized bronze seats in if that would make you feel more comfortable with the seat issue
    so do the over size bronze seats work better

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    Quote Originally Posted by Cycle Concepts View Post
    Yes we do..the only reason that the seat would move around after the repair is because they were installed too loose(not enough interference on the fit)...some can install them correct and some can't..
    ok thanks ill be getting with you monday on some prices

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    Quote Originally Posted by Cycle Concepts View Post
    Yes we do..the only reason that the seat would move around after the repair is because they were installed too loose(not enough interference on the fit)...some can install them correct and some can't..
    Well....which one are you Dwayne?

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    Quote Originally Posted by peanut r1 View Post
    so do the over size bronze seats work better
    well all different metals have different characteristics such as absorbing heat and malleability. bronze is a softer metal than steel so it would in theory increase valve life and absorbs heat faster then steel and again better for the valve, can be very beneficial in a turbo or nitrous engine. bronze, like brass, is a copper alloy, and if im remembering correctly that bronze has a high tin content making it stronger, less malleable, than brass....ape's site kinda backs me up on this APE - Oversize Bronze Valve Seats and claim they wont move in the head as much as steel
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    Quote Originally Posted by Moody View Post
    well all different metals have different characteristics such as absorbing heat and malleability. bronze is a softer metal than steel so it would in theory increase valve life and absorbs heat faster then steel and again better for the valve, can be very beneficial in a turbo or nitrous engine. bronze, like brass, is a copper alloy, and if im remembering correctly that bronze has a high tin content making it stronger, less malleable, than brass....ape's site kinda backs me up on this APE - Oversize Bronze Valve Seats and claim they wont move in the head as much as steel
    thanks that helped do you get charged more for putting them in ? are do they just charge you for parts

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    i am not setup to tackle this myself, contact one of the site sponsor and i am sure there is a part and labor cost on this. you have to understand that the tools alone to do this type of job are expensive. usually they will make you a package type deal like for porting, oversized valves and seats, springs, and so on...and with some good cams you are gona like the outcome
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    Quote Originally Posted by Moody View Post
    i am not setup to tackle this myself, contact one of the site sponsor and i am sure there is a part and labor cost on this. you have to understand that the tools alone to do this type of job are expensive. usually they will make you a package type deal like for porting, oversized valves and seats, springs, and so on...and with some good cams you are gona like the outcome
    the head i have already have a nice port job thats why i want to get it fixed and will consider them seats just wanted a ruff estemate

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    Quote Originally Posted by sportbikeryder View Post
    Well....which one are you Dwayne?
    which do you think???
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