I have a custom supercharged 2007 Aston Martin V8 Vantage. Engine rebuilt extensively but cams improperly timed when engine was built. Intake phase angle is advanced 35 deg in fully retarded position as reported by the PCM. Builder is going to fix this but I want to be sure I can get zero overlap with VVT. I�m tuning the factory PCM and have extensively reverse engineered it. My builder posted these cam specs ... Vantage Turbo: V8 Camshaft timing » Aston-Martin.com
Can you confirm these to be accurate or tell me the Cam specs if you know?
I�m thinking the stock setup has some overlap even when the intake cams are fully retarded and I want to advance the exhaust cam and retard the intake cams a little to accomplish no overlap when I am on boost.
The specs Arnout is giving me above just seem crazy compared to Jaguars. Any help would be appreciated.

Hi "Count Iblis"

I just saw that you replied to my servo assistance control and that you are interested in more.
The thing is that you're pretty much the only one besides WhiteXKR that has shown any interest so i wrapped up the project a while ago.

What can i do for you?
What in particular would you like to know more about?

And.. please let me know how the BMW module turns out

Best
/Stig.

I had a tech question for you... I was messing around with a 3d printer today and got to thinking.... The eaton m112 rotors, theoretically, i could copy the TVS rotor pack to the exact dimensions to fit inside the M112 supercharger... Do you have any expertise or idea whether that would create a benefit in power/efficiency?

just seen your article on your site, must say it was a good read, All the Best!

Hello. I was an engineering officer in the US Air Force...so I can follow your discussions which are very informative. I just finished reading the book Jaguar XK8 The Complete Story by Graham Robson. I found it quite good reading and loved all the background info on the car. It gave me insight and knowledge of the projects you had a hand in. Personally, I am thrilled we have you on this forum, due to your having worked on the XK180 and other Jaguar development projects.

Would you answer a question regarding HP ratings please? Jaguar used a DIN rating. Is this a gross rating without ancillaries such as alternator, power steering pump etc.? How does it compare to what I believe is SAE Net rating used in the US? Specifically, the 4.0L SC engine had a 370hp DIN rating. What would this be in terms of HP ratings stated by manufacturers today? Is there a rough conversion factor such as DIN is approximately 80% of SAE Net for example?