[Healeys] Camshaft differences

Wilko2 e-wilkins at cox.net
Mon Feb 8 20:39:14 MST 2016


When I replied, I only sent to Chris Dimmock.

The first cam on the left is the earliest cam. It has a different oil pump drive gear. It won't work with most healeys as the gear will not mesh with a gear with more teeth.

Wilko

On Feb 8, 2016, at 6:01 PM, richard mayor wrote:

> After many years of racing I became aware of the rings on the cams and I made a few notes from time to time. After reviewing my notes I hope I can shed some light.  
> In the photo that I see, the cams are placed from left to right - not top to bottom. Starting with the far left cam - the one with no rings - I believe to be a very late 3000 cam. This one should have a part # stamped on the end. (I once saw a BJ7 cam with no rings and it had part #12B594 stamped on the end). The next two cams have a single ring and I believe these are early 3000 cams. The 4th cam with a 2 rings is a 100-6 cam. The 5th cam on the far right is not clear, it appears to have 3 grooves ... if that makes it a 2 ring cam then it is also a 100-6 cam.
> 
> On Mon, Feb 8, 2016 at 3:16 AM, Chris Dimmock <austin.healey at gmail.com> wrote:
> And here's a picture.
> Pic the wrong one out.
> 
> 
> 
> Sent from my iPhone
> 
> > On 8 Feb 2016, at 10:07 PM, Chris Dimmock <austin.healey at gmail.com> wrote:
> >
> > Andy.
> > There are 2 gear drives on a camshaft.
> > One for the distributor.
> > One for the oil pump.
> > The drive for the distributor was always the same number of teeth.
> > Always on a C series engine. Same same same.
> > Oil pump? That's different.
> > Same size gear for both?
> > No. Smaller? That's early
> > Bigger gear for oil pump?
> > That's later. Bigger gear.
> > That's the one I'll be using.
> > Your pic tells me nothing

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