It will be interesting to see how well this engine runs.
Mike
Dave & Marlene wrote:
> Hi Mike,
>
> It depends on the overall engine design. The in & out need to be
> somewhat balanced. What can't get out can't get in & vs. Usually the
> exhaust needs to flow about 70% to 80% of what the intake flows. Some
> folks believe that the original exhaust valves/ports are
> disproportionately restrictive. I have certainly not found any
> disadvantage to this modification.
>
> Dave Russell
> Bn2
>
> Mike MacLean wrote:
> > To all that answered my question about what size exhaust valve to
> > use in my 4 cylinder head because of the oversize seats, 3000 valves
> > fit perfectly. Some suggested just that, but I always thought if you
> > wanted more power you used bigger intake valves. What kind of a
> > performance gain do you get from bigger exhaust valves only? Mike
> > MacLean 56 BN2 60 AN5
>
>
>
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