From:
doctorduke_REMOVE_868984_THIS_@yahoo.com
--- In <a href="/group/cosworthvegas/post?protectID=219233066105193209050199029077192253163098100009128121188190230091025019053061151110147">cosworthvegas@yahoogroups.com</a>, cospit72 <<a href="/group/cosworthvegas/post?protectID=091233212180056219138097203245129208071">no_reply@y...</a>> wrote:
> Hi everyone, I'm in the process of rebuilding a 76 Cv engine and am
> going to add a weber setup and a eaton supercharger.(Blow thru
> system) I am staying with stock pistons but am wondering what cam
set
> up would work best. Any info would be greatly appreciated.I have
been
> told that Duke Williams is the person to talk to. Duke, Whats your
> Email address???
> Merry Christmas everybody!!! Dave Atkins @ <a href="/group/cosworthvegas/post?protectID=029166113165221132172232004077240165134048139046">maatkinsdef@a...</a>
The best valve timing to achieve the broadest torque bandwidth for
either a naturally aspirated or boosted engine from off idle to
about 7500 revs is achieved with the stock cams and retarding the
inlet 8 degrees and advancing the exhaust an equal amount.
The OEM indexing has excessive overlap to reduce NOx, and this amount
of overlap is a disadvantage, even more so on a boosted than naturally
aspirated engine.
I would recommend using the OEM EFI system with a supercharger as it
will automatically adjust fuel flow to boost pressure (to a point)
because of its speed density architecture.
Duke
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