Brock,
As with any engine that's been in production for a while, there are a
variety of cams floating around.
A good reference to pick up is Vizard's "Tuning BL's A Series Engine" (just
went through an update and the name may have been modified slightly... my
coffee hasn't kicked in yet :-). Mini Mania probably has a good reference
in their catalog, Mini City also has a pretty good chart.
One of the ways that the cams were identified is that "rings" of extra
material were left between lobes, sometimes near the distributor drive. #
of rings, lobe width and oil pump drive type (flange, pin or spider).
The first gen Cooper (997cc) had a cam with:
lobe width 3/8"
intake open 16 deg
intake close 56 deg
exhaust open 51 deg
exhaust close 21 deg
int/exhaust duration 252/252
lift .318
using the same sequence, the early "S" shows the following specs
1/2", 5, 45, 51, 21, 230/253, .318"
The later S (AEG 510 or AEG 542)
1/2", 10, 50, 51, 21, 240/252, .318"
hth
Cheers,
Jim
Dallas
'63 Mini Cooper (and a few other projects)
> -----Original Message-----
> From: owner-vintage-race@autox.team.net
> [mailto:owner-vintage-race@autox.team.net]On Behalf Of
> Brock.D.Dittrick@jci.com
> Sent: Monday, November 19, 2001 4:10 PM
> To: vintage-race@autox.team.net
> Subject: A series Cooper cam
>
>
> Hello:
>
> I have what a person is telling me is a Cooper cam that he is willing to
> give me for my 948 Sprite...
>
> Does anyone know what the duration, valve lift etc is for a Cooper cam,
> just so I can make comparison to my stock 948 camshaft.
>
> I dunno if an 'S' or regular? Cooper had different cams, so, possibly info
> on both ( if they are different) would be appreciated.
> I couldn't find any numbers stamped on the cam anywhere as to lead me in
> one direction or the other....or possibly he was taken and its a
> regualr cam as well.
>
> Thanks and Regards
>
> Brock Dittrick
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