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hi ive rebuilt my old afa 33 engine i have it up and running , but i get a tapping sound from near the head, could it be my tappets ?:confused:
 

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Mechanical or hydraulic lifters ?

Mechanical then here's an article I got the gaps from and used his advice making a tool.
https://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB0QFjAA&url=http://www.arocaqld.com/library_articles/sud_tune_up.php&ei=tk9rVI_JKoWamwXJ0oLgAQ&usg=AFQjCNE4kUcquggEhJtUXhpq5jmOYujJUw&sig2=TIRyoj6T_rk9IF0yIzGEQw
If hydraulic did you use the old lifters ? if so you likely put them back in a different order and they could settle some what over time. Try using synthetic oil.

Sorry that's all I got. :)
 
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