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#21 | |
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#22 |
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OK- the valve job is 30/45/60/75/90 on a BBC production head the valve bowl is too big to get much if any 60 degree angle with a 2.065 valve. In the picture you will see the lap line, below the lap line is the 60 degree angle which is around .180 wide, that 60 degree angle is partially responsible for the low lift flow gains. If you look at the picture before modifications you will see there is very little 60 degree angle below the 45 degree seat. Hope that explains it.
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#24 |
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Great, happy to have you involved. More pictures
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#25 |
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Exhaust flow is now:
.200 126 + 19 .300 160 + 29 .400 175 + 23 .480 178 + 13 Exhaust valve is tullipped. Last edited by HP HUNTER; 05-23-2024 at 09:45 PM. |
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#26 |
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Ready to be cleaned and assembled.
Last edited by HP HUNTER; 05-26-2024 at 08:55 PM. |
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#27 |
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If you don't mind sharing, how wide is the seat and how wide are the other angles?
Thanks
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#28 |
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#29 |
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Hmm, narrower than i thought. I kept exh seat a bit wider to help heat dissipation (.070)
And then I did the same for intake (.070) and the others were kept to whatever it took to put the seat (45) where i wanted it so the 30 and 60 vary from .030 to .07. Am i on the right track or did i mess up?
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#30 | |
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Last edited by HP HUNTER; 06-06-2024 at 11:16 AM. |
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