wanted: spider-drive camshaft in Oz

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Geoff - 09 Mar 2004 14:38 GMT

Hi all
I'm almost done with doing up my cooper s engine. I've been recommended to
use a Wade Cams 446B grind and apparently I'm also better off changing from
the pin drive cam to the spider drive because I'm told that the spider drive
is stronger and the oil pumps for them are cheaper and also are a higher
capacity pump...

Anyone have one of these cams to sell?

Thanks
Geoff

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Steve - 11 Mar 2004 15:32 GMT

> Hi all
> I'm almost done with doing up my cooper s engine. I've been recommended to
[quoted text clipped - 7 lines]
> Thanks
> Geoff

I've never heard of any problems with any of the pump drives. In fact the
only slight problem is that the 'spider' itself can wear over many years.
But in reality, none of the drives give a problem.

Signature

Rgds
Steve
steve@dsnclassics.co.uk
www.dsnclassics.co.uk

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me - 12 Mar 2004 13:04 GMT

>>Hi all
>>I'm almost done with doing up my cooper s engine. I've been recommended
[quoted text clipped - 20 lines]
> only slight problem is that the 'spider' itself can wear over many years.
> But in reality, none of the drives give a problem.

Yep!

Or is it that the spider cam has bigger lobes to grind - which maybe
more the case.

I may have a cam - have to look.

Another thing you may want to get is an indexed timing gear set to make
sure of the cam angle after the grind.

BTW what is the timing and lift of a Wade 446B?

rm

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Geoff - 16 Mar 2004 15:10 GMT

> Yep!
>
[quoted text clipped - 9 lines]
>
> rm

thanks...i think i've tracked a cam down at Northern Mini Parts, which is
useful as Wade is also in Melbourne so they can send it straight over. they
want about $80 and apparently the cams have mostly been ground before but
should be ok for another grind.

Wade Cams assure me that the 446B profile is a popular and very effective
cam for a road mini.
specs for that cam on their website (www.wadecams.com) are:
Lobe Lift= .295 (Ex & In)
Timing= Ex 71-40, In 33-78
Duration @ .050= 227
Valve Clr= .014
Valve Lift= .340
Lobe Sep= 109

To be honest, the specs don't mean anything to me. anyone able to explain
it to me?
They said its 'rev range' is approximately between 3000 and 6500rpm but even
below 3000 it should be no worse than my standard cam...

Geoff

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Geoff - 16 Mar 2004 15:19 GMT

> I've never heard of any problems with any of the pump drives. In fact the
> only slight problem is that the 'spider' itself can wear over many years.
> But in reality, none of the drives give a problem.

the explanations i had were:
a) the pin on the pin drive can occasionally come loose (but mine is fine so
i don't think thats an issue)
b) if i change to spider drive, then i can get an oil pump of higher
capacity for less money than the equivalent pin-drive pump. I was also told
that there were some dodgy pin drive oil pumps going around (maybe just here
in Aust??) a couple of years ago...

i also thought that doing the above will allow me to keep the original
cooper s cam, so that in case i decide to sell the car at some stage (though
i can't imagine why i'd want to :), i've still got all the original stuff so
it can be put back to standard if necessary. just a thought...

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