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cross hatch cylinder number i have the number.

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Old Apr 26, 2010 | 05:24 PM
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AJ-RST1
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Default cross hatch cylinder number i have the number.

as above i have the number if anyone knows its a thick wall one? 81SM6090 BRA
can anyone help?
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Old Apr 26, 2010 | 05:26 PM
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taz1787
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yes mate in a quick answer but check out

www.pumaracing.co.uk at there cvh head info
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Old Apr 26, 2010 | 05:37 PM
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81SM6090 is the one mate, or EFI head is 89SM6090 and will take 45mm valves

Last edited by Karlos G; Apr 26, 2010 at 05:40 PM.
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Old Apr 26, 2010 | 05:47 PM
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will i gain on bigger valves?
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Old Apr 26, 2010 | 05:52 PM
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also will i just have to bolt my inlet on to the head, i know about the cam etc?
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Old Apr 26, 2010 | 10:20 PM
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I've just checked the serial no on my head and mine is a Cross Hatch 81SM6090 BRA. On closer inspection it's had the cross hatch markings machined off. Very odd!
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