whats involved with switching a head? - ZX Forums
 
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post #1 of 3 (permalink) Old 03-22-2010, 08:56 AM Thread Starter
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From: Burlington, Ontario
I Ride: 1990 zx7 1992 zx7r 2000 zx9(current bike) 2001 gsxr 619 1981 kz1000

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Question whats involved with switching a head?

i've worked on many 2 strokes and smaller 4's but never this big, so not sure if i should attempt this or not ( just short on cash) i need a head swithced from one motor to another, basicallywhen i bought my 1992 zx7 it had a 92 750 with bottom end damage but P O sent it out head to be ported and cleaned up, before he realized bottom end had chunk missing (pics are on my build thread)

so i've picked up another engine a 93 motor that has a broken valve in head, so wondering how hard and degree of difficulty changing good head onto good bottom end? i cant time it, never done that but is it worth changing head and having it just timed after or should i just hand over all the parts to a exp mechanic? like i said iam pretty good with stuff and engines can do anything on car engine just never been this deep into a bike

thanks

"Fuck off I got work to do!"

-Cyrus. TPB
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post #2 of 3 (permalink) Old 03-22-2010, 09:17 AM
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Well it's probably a little involved for me to try to explain on here, but a good manual could probably walk you through the process. I would just add that you want both surfaces, head and top of cylinders very clean, and dry. And while you have the head off have someone throw a straight edge on it to make sure it isn't warped.

Oh, and if the 93 engine you picked up dropped a valve, I hope the valve didn't hit the piston.

Good luck.

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post #3 of 3 (permalink) Old 03-22-2010, 10:25 AM Thread Starter
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very true crossing my fingers its ok but just talked to guy locally he's going to do it and work with me on money and time plus he would be able to see any futur problems i might miss

"Fuck off I got work to do!"

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