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Modifying B18D head to B18B specs. 120-130 1967

posted by  vesparally on  Sat May 7 12:37 CST 2016
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last visit: Tue Oct 21 18:11 CST 2014
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B20Paul, I don't understand what welding the exhaust ports has to do with shaving the deck height.
My goal is to bring my B18D up to B18B specs.
As far as I know, the only difference between the two motors is compression ratio (hence decking the head) and a different camshaft.(still trying to decide about that one)
I am not interested in changing the valves.
I am curious to know if the B20 style valve seals are a real improvement over the B18 "umbrella" style valve seals.
I believe Phil said that the B18 valve guides could be machined to accept B20 style valve seals because the B20 valve guides would not work in a B18 head.
From what I've read so far, it seems that for a non-race use motor, the head porting is okay.
Hope to find a B20 motor someday and build that up, but for now I need to work with what I got.






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New Modifying B18D head to B18B specs. [120-130][1967]
posted by  vesparally  on Sat Apr 30 14:35 CST 2016 >


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