"AndyC" <cleland72@[EMAIL PROTECTED]
> wrote in message
news:7ed23c66-e1e2-44f1-9f90-445f9a340eb5@[EMAIL PROTECTED]
Jul 7, 10:39 am, "GbH" <Geoff_Hanning...@[EMAIL PROTECTED]
> wrote:
> AndyC wrote:
> > I've just got a new camshaft for the 3.9i I'm rebuilding for the 110.
> > It's one with the step machined into the end by the timing gears to
> > allow it to work with the retaining plate fitted to the later engines.
> > I know the interim engines (gear driven oil pump and dizzy) had a
> > full- circular retaining plate and then on the 4.0 and 4.6 LR moved
> > to a semi-circular plate. Does anyone know if the critical dimensions
> > are the same for both types of plate (i.e. will either work with my
> > cam)? The semi-circular ones seem easy enough to get hold-off, the
> > interim ones less so - in-fact I can't even find a part number for
> > them.
>
> > I'm assuming it's a good idea to fit one - it's just a case of
> > drilling and tapping a couple of holes in the block (avoiding oil
> > ways) and I know the original method of location, relying on a taper
> > on the cams reacting against the lifters, isn't considered a
> > particularly great bit of engineering.
>
> > Cheers,
>
> > Andy.
>
> Ask Badger, I'm sure he will know.
>
> --
> Wisdom and experience come with age, they say, but I wish I could
> remember the darn question
Yes, hopefully he'll be along with his vast wisdom.
Digging a bit further, it looks like the thrust plates are different,
with the 4.0/4.6 having a smaller diameter. As my cam was sold as for
a 3.9, it looks like I'll need the larger, interim, thrust plate -
anyone know its part number?
The plates are indeed different and you need the right one. Sorry, I don't
have the part number to hand, but be carefull when drilling the holes as
they are offset slightly below the cam centreline to give clearance to the
oil galleries.
Badger.
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