John Kipping wrote:
>219015 and 219016 heads are the later full width type and it is not
>straightforward to fit them to a MK I engine.
This doesn't surprise me and I hope I didn't imply that it was. Apart
from the different stud diameter, I'm aware there are other variations
on gaskets.
One interesting point though,
>these later heads use a smaller exhaust valve than MKIIs up to 1973,
the
>same size as a MKI, these heads are less prone to the dreaded
cracking
>between the valves that afflicts so many MK II heads with the big
exhaust
>valves.
And I believe from what I read that Chris Witor found this later head
with its smaller exhaust valves and improved porting offered better
flow properties when compared to earlier heads with larger valves. As
I've now deleted the original enquiry, I can't really remember the
original query <g>. If its better overall performance without breaking
the bank, this thread has to be 'welcome to the land of compromise'
and I guess a Triumph engine specialist is the best person to talk to.
Jonmac
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