Head Crack

  • 4TheKZ1000
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26 Nov 2012 19:13 - 26 Nov 2012 19:13 #560143 by 4TheKZ1000
Replied by 4TheKZ1000 on topic Head Crack
Wow....the San-Andreas Fault of cyclinder heads.... :blink:

I thought I heard spark plug holes were real bad place to crack, but not sure....we shall find out I guess.... ;)
Last edit: 26 Nov 2012 19:13 by 4TheKZ1000.

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  • Bozo
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26 Nov 2012 20:13 #560148 by Bozo
Replied by Bozo on topic Head Crack
I've had and seen lots of heads with these cracks, as long as the seat is in good condition, this is not a problem the crack normally doesn't go all the way up. I would worry about that plug hole being repaired more then that crack.
First Permanent ride the Z1R since Dec1977 (220,000km) as of June 2015
Second permanent bike 1989 FJ1200 dyno'd 140RWH, great bike.
Third ride is now the Frankenstein 1981 GPZ1100B1, 1983 fully recon motor fitted LOVE THIS BIKE
Forth my work bike FJ1200 1989 (same type as FJ above)

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  • Street Fighter LTD
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26 Nov 2012 21:11 #560154 by Street Fighter LTD
Replied by Street Fighter LTD on topic Head Crack

Couldnt resist :laugh:

Jay is right, NOS and Boost MAY enlarge the crack just a wee bit B) B) B)

Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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26 Nov 2012 21:33 #560156 by les holt
Replied by les holt on topic Head Crack
I always get a chuckle out of that pic. Seen one like it of a nitrous motor when they added propylene oxide, they don't like each other! :laugh: :laugh: :laugh:

Les
www.facebook.com/PdmCustomFabrication
76 kz 900 turbo
77 LTD 1000 turbo
2 78 Z1R's
72 H2
kzrider.com/forum/13-bike-related/491552...one-followed-me-home
accelerate.presspublisher.us/issue/issue-6-2012/article/ltd
www.cycleworld.com/2013/09/04/2013-cycle...-concours-bike-show/
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26 Nov 2012 21:41 #560157 by 650ed
Replied by 650ed on topic Head Crack
Snap, crackle, and pop! :laugh:
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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27 Nov 2012 08:44 - 27 Nov 2012 08:45 #560211 by LarryC
Replied by LarryC on topic Head Crack

guitargeek wrote:

APE Jay wrote: Most of the KZ heads that come thru the shop are like that. Unless you are turboing it of running big nitrous load, you won't have a problem with it.


I was sure glad to read this last night! I had a bad moment when I found these:

[IMG


[IMG


[IMG


650 head? Doesn't look like a KZ1000 chamber or exhaust port.
Larry C.
Last edit: 27 Nov 2012 08:45 by LarryC.

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  • guitargeek
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27 Nov 2012 10:11 #560221 by guitargeek
Replied by guitargeek on topic Head Crack

LarryC wrote: 650 head? Doesn't look like a KZ1000 chamber or exhaust port.

J model, '87 cop bike.
1980 KZ750-H1 (slightly altered)
1987 KZ1000-P6 "Ponch"
1979 GS1000 "Dadzuki"

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27 Nov 2012 11:04 #560228 by 531blackbanshee
Replied by 531blackbanshee on topic Head Crack
:ohmy:
whoa,who left the door open :pinch: ,guitargeek done snuck in :woohoo: !!!!

was wonderin where you had been off to just the other day.

leon
skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!

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kzrider.com/forum/5-chassis/294594-frame-bracing?limitstart=0

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27 Nov 2012 13:28 #560234 by baldy110
Replied by baldy110 on topic Head Crack

Street Fighter LTD wrote:


Jb weld will fix that right up.

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  • 4TheKZ1000
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27 Nov 2012 14:44 #560238 by 4TheKZ1000
Replied by 4TheKZ1000 on topic Head Crack
Use some Kentucky Chrome.....AKA.....Duct Tape..... :laugh:

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  • APE Jay
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27 Nov 2012 14:49 #560240 by APE Jay
Replied by APE Jay on topic Head Crack

Street Fighter LTD wrote:


Couldnt resist :laugh:

Jay is right, NOS and Boost MAY enlarge the crack just a wee bit B) B) B)


The late Elmer Trett did that to 11 cylinder heads in a row and that was why we decided to do the billet head.

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28 Nov 2012 21:52 #560388 by Galactica
Replied by Galactica on topic Head Crack
Hey guitargeek,

That is exactly like the crack in my 900 head.

Ross
77KZ1000
76 KZ900

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