Mark II heads?

  • testarossa
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15 Feb 2011 06:31 #430806 by testarossa
Mark II heads? was created by testarossa
What's up with all the Mark II cylinder heads on ebay? I just started looking around for a builder head for my bike. I started watching ebay this week and I seems like there are more Mark II heads for sale than regular pre 79 heads. Is there any difference in the casting? Can a Mark II head be used on any 903/1015 motor? Did everyone just part out their Mark II or are all these heads from shafties?
1978 KZ1000 A2 Click--->Build Thread
2004 ZX-10R
2007 Harley Sportster 1200
2020 Harley Street Glide Special
Angola, IN

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15 Feb 2011 06:43 #430810 by PLUMMEN
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you can use either on either motor,i just think the old ones look a lot better is all! :laugh:
Still recovering,some days are better than others.

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15 Feb 2011 08:26 #430831 by trianglelaguna
Replied by trianglelaguna on topic Mark II heads?
most of the auctions show the other parts the seller has for sale,and a lot of times the other parts are off shaft bikes,so i think most of the heads now listed are shaft bike heads...does it matter...no...imo
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15 Feb 2011 08:31 #430834 by testarossa
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The Mark II head has a different valve cover as well, doesn't it? If I were going that route, then I would need to get the cover with the head. Am I thinking correctly here?

That's a good point about looking at the other auctions to get a better sense of what they are parting out. I guess that Mark II sounds a lot more sexy that saying the parts are for a shaftie.
1978 KZ1000 A2 Click--->Build Thread
2004 ZX-10R
2007 Harley Sportster 1200
2020 Harley Street Glide Special
Angola, IN

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15 Feb 2011 08:38 #430836 by trianglelaguna
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dunno if the cam covers foot print is different....wondered about that.....
1976 KZ900
2003 ZX12R
2007 FZ1000
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15 Feb 2011 08:38 #430837 by PLUMMEN
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you can use the old style cover ,just plug smog holes in the head.
Still recovering,some days are better than others.

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15 Feb 2011 10:59 - 15 Feb 2011 11:00 #430860 by Patton
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[Click on image to enlarge view.]

703
1973 Z1
KZ900 LTD
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Last edit: 15 Feb 2011 11:00 by Patton.

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15 Feb 2011 11:25 #430863 by PLUMMEN
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you got the wrong gasket there modman,the one on the right is for j-series motor not 73-78 :laugh:
Still recovering,some days are better than others.

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15 Feb 2011 11:39 #430865 by Patton
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PLUMMEN wrote:

you got the wrong gasket there modman,the one on the right is for j-series motor not 73-78 :laugh:


Thanks! :cheer:

(Back to the drawing board!) :pinch:
1973 Z1
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15 Feb 2011 12:16 #430872 by 531blackbanshee
Replied by 531blackbanshee on topic Mark II heads?
square end
round end
doesn't matter as long as they are not for a jmodel.
i have seen and mismatched them myself several times.
leon
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  • testarossa
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15 Feb 2011 12:23 #430873 by testarossa
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Cool. Thanks for all the info gentlemen. It always helps to widen your net when searching ebay for parts. I'm just trying to get prepared for phase two of the Testarossa Streetfighter. MORE POWER!
1978 KZ1000 A2 Click--->Build Thread
2004 ZX-10R
2007 Harley Sportster 1200
2020 Harley Street Glide Special
Angola, IN

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15 Feb 2011 12:33 #430876 by Patton
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1007
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