Terry, thanks for sharing this with us. I found the same thing with
my flow bench work on both Spitfires and TR6's.
Thanks for telling us about the straight port experiment - you saved
me all the work of trying this next.
One thing that I found interesting is the flow I measure on both 4
and 6 bangers with the valve totally removed did not increase as much
as I expected, and like you, could only conclude that the diameter of
the seat was pretty limiting. I have found that the 3-angle valve
seats act as advertised and are the biggest single improvement that
one can make.
At 11:17 PM 1/1/2008, Terry and Cindy wrote:
>I have yet to trial any roller rockers but it is planned for the in-progress
>rebuild of our race GT6 engine. I can however offer some real-world comments
>on head flow and related matters that might clear up some mis-conceptions in
>this thread....................................
>...............................I'd be happy to swap real results
>with anyone else who might have the same.
>I'd really like to hear from folk with cam data and anyone else who has
>experimented with larger valves and lifters.
>
>Terry O'Beirne
>_______________________________________________
>http://www.team.net/donate.html
>
>Fot mailing list
>Fot@autox.team.net
>http://autox.team.net/mailman/listinfo/fot
_______________________________________________
http://www.team.net/donate.html
Fot mailing list
Fot@autox.team.net
http://autox.team.net/mailman/listinfo/fot
|