what cams to use

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what cams to use

Postby h-bot » Sat Dec 21, 2002 8:33 am

From: cospit72_REMOVE_356007_THIS_@yahoo.com

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=029166113165221132172232004077240165134145091046167121181">maatkinsdef@a...</a>




[This is message #10086 by user cospit72 on Yahoo! Group Cosworth Vegas: http://groups.yahoo.com/group/cosworthvegas ]
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what cams to use

Postby h-bot » Mon Dec 23, 2002 2:01 am

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




[This is message #10088 by user doctorduke on Yahoo! Group Cosworth Vegas: http://groups.yahoo.com/group/cosworthvegas ]
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