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Mystery CL77 head

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tommy Member
Posts: 2
Joined: Sun Nov 14, 2004 9:53 am

Mystery CL77 head

Post by tommy » Sun Nov 14, 2004 10:07 am

Many years ago I aquired 2 truck loads of CL77 parts/bikes.<br />I have just now started putting things together for the first bike, an &quot;orange&quot; '67, big wheel.<br /><br />I selected the best head for rebuild, but found something<br />very strange on it.<br /><br />On all the other heads, between the intakes,<br />there is a capital &quot;H&quot; stamped at the base, but on this head<br />there is a capital &quot;M&quot;. The &quot;M&quot; is vivid and was clearly cast<br />in when the head was created.<br /><br />I compared all the heads and found only minor differences,<br />such as fin arrangements.<br /><br />Does anybody know what this &quot;M&quot; is about?<br />I seriously doubt that anyone made an aftermarket head,<br />so this is very puzzling to me.<br /><br />tommy<br />

kl Member
Posts: 7
Joined: Fri Nov 26, 2004 2:04 pm
Location: manchester england

Re: Mystery CL77 head

Post by kl » Fri Nov 26, 2004 2:26 pm

i could be totally wrong but this is my theory.i have stripped quite a few 250/350k twins and they too show differing fact one head had slightly different shaped fins on front/fin on lower extreme of exhaust port machined away.i reckon they are revision marks or mould no.:marks.....kl
keith laycock

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