Hello all.
I am in the process of getting bits together to rebuild a spare 7A head and today when I was cleaning, I noticed the inlet valves have marks on them which may be a bit of a worry.
Head is second hand so i don;t know how many times it has been skimmed but to me, it looks like it may have been a couple of times and as a result the inlet valves are touching the valve pockets ever so slightly and when i say slightly i mean it has made no impressions into the surface of the valve, it has just polished it. I don't think it could be a result of timing belt snapping as the marks are uniform on all valves and they slide nicely in their guides.
Is it feasible to have the valve pockets machined out to give me back the clearance? It looks like there is plenty of meat in the top of the piston but that is only guesswork as I've never seen one cut in half.
thanks in advance for any advice or anything else you may think needs to be done to revive the head.
I am in the process of getting bits together to rebuild a spare 7A head and today when I was cleaning, I noticed the inlet valves have marks on them which may be a bit of a worry.
Head is second hand so i don;t know how many times it has been skimmed but to me, it looks like it may have been a couple of times and as a result the inlet valves are touching the valve pockets ever so slightly and when i say slightly i mean it has made no impressions into the surface of the valve, it has just polished it. I don't think it could be a result of timing belt snapping as the marks are uniform on all valves and they slide nicely in their guides.
Is it feasible to have the valve pockets machined out to give me back the clearance? It looks like there is plenty of meat in the top of the piston but that is only guesswork as I've never seen one cut in half.
thanks in advance for any advice or anything else you may think needs to be done to revive the head.
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