Quote:
Originally Posted by Yak
A few ideas/observations:
It looks like the replacement towers have a slightly uneven surface or flat surface. On the far right of the pic you can see a different reflectivity. Do you have the tools or a table to check the flatness of the tower? A pane of glass or a lapping surface, perhaps?
If it's flat, is also square with the holes?
Also, have you checked the bolts for trueness? And/or the holes in the head for thread size and cut?
Your last two pics are taken without the bolts in place, correct? If so, I don't think the problem is with the holes in the head, since they're not involved in that picture. That would leave the shaft, the rockers, or the cam as variables, wouldn't it?
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I would kill for a surface plate! I am pretty sure the problem is with the position of the holes - well the locating rings set in the holes in the head - but I will check them all out tomorrow. I will check the bolts too. Put it this way I have now used 4 towers and I have got the same / similar result each time...
Thanks for the input Yak
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