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Originally Posted by knighty
Yup, just worked it out along the same lines too, the data I have below is from race engine magazine when they interviewed Jason Hill about the Prodrive GT1 aston engine project.
2005 AM V12 with 2 x 31.2mm restrictors = 1530mm area = 585bhp
2006 AM V12 with 2 x 30.8mm restrictors = 1490mm area = 570bhp
2007 AM V12 with 2 x 30.7mm restrictors = 1480mm area = 570bhp
Divide the power by the restrictor area and I get an average ratio of 0.383……therefore for 2008 P1 engine using a homologated GT1 base motor…...
2 x 33.7 P1 homologated GT1 restrictors = 1784mm = 683bhp
2 x 34mm P1 homologated GT1 restrictors (Aircon) = 1816mm = 695bhp
So yes, I now agree!......as the P1 engine will be spinning faster that in its GT1 guise I'd also say it was good for just under 700bhp
If I was Mr Judd I'd be pretty peeved looking at those numbers :-(
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Good post, thanks for working it all out!
And those figures make fascinating reading.........bring it on!!
