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Post by bluebuddy on Feb 16, 2010 19:05:51 GMT -5
I have a 1972 XS2. I have two different valve clearance specs. Clyer says cold Intake .002 to .004 cold Exhaust .006 to .008 Haynes says Inlet .006 Exhaust .012. I've looked at other sources and I believe Clyer is correct. Anyone know for sure?
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Post by skimmer on Feb 16, 2010 19:52:43 GMT -5
My Clymer manual says, like yours, intake .002-.004, exhaust .006-.008 inches. But then in the back of the book under "Performance Modifications" it says Intake .006, exhaust .012. Grizld 1 can you clear this up for us? This is just my less than professional back ground speaking, but, if you have a little play and it's not ticking too bad then you're in the ballpark. [lets see what kind of response this gets] Skimmer
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Post by grizld1 on Feb 17, 2010 9:22:03 GMT -5
The early engines (series 256) used a different cam from later units, and recommended valve lash was wider. There may have been later service bulletins with different recommendations, but the XS2 owners manual (available at www.biker.net ) specifies .006" intake and .008" exhaust. As far as ticking is concerned, you're better off hearing your valves than smelling them.
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Post by bluebuddy on Feb 17, 2010 10:32:52 GMT -5
Thanks, Grizld1, and Skimmer. I will use that spec. to check by and if a rebuild is in order set them by that when done.
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Post by dpmulvan on Mar 2, 2010 19:27:44 GMT -5
try 4 and 6
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nj1639
Junior Member
Posts: 32
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Post by nj1639 on Mar 2, 2010 21:13:16 GMT -5
4&6 on my '83
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Post by 5twins on Mar 3, 2010 0:20:32 GMT -5
dp & nj - u have newer models - don't u pay attention to the specs 4 different years ? Yours don't apply to a '72.
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nj1639
Junior Member
Posts: 32
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Post by nj1639 on Mar 8, 2010 20:52:26 GMT -5
Well, I did state my year.
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