Grant,
Since my last posting on the matter, I have learned that apparently all the
blocks were sized the same. The cam bearong engines had the bearings pushed in
the holes and the cam therefore has smaller journals. So you can install stock
Mk3 cam bearings in a 1500 engine if you get a Mk3 cam to go with them.
I don't know what the shop that built my 1500 did, but I instructed them that I
wanted cam bearings installed. It is possible they align bored the cam holes
and pressed in oversize cam bearings that were sized to fit the stock cam
journals. Either that or they went to a Mk3 sized cam.
I am satisfied to wait many years before I find out exactly what they did! :)
Joe
Grant Buss wrote:
>
> When I rebuilt my 1500 engine I got a slightly hotter cam. I think it was for
>a MK3.
> I also got the bearings for it and they went right in without doing anything
>to the
> block
>
> Joe Curry wrote:
>
> > Paul,
> > It's interesting that you should ask about this at this particular time. I
> > thought I had a handle on that issue, but apparently not. I talked to BPNW
> > about that earlier today and was told that the MkIV and 1500 engines have
>larger
> > journals on the cam than the ealrlier engines. I was under the
>mis-impression
> > that the cam journals were all the same size and the block was reduced in
>size
> > when the cam bearings were done away with.
> >
> > I was told that for my racing engine (early 1296) to ditch the cam bearings
>and
> > run the cam right in the block. That runs counter to all my emotions.
> >
> > I am going to pose the question to the FOT list ans see if any of the
> > "Heavyweights" have any further comment on the subject.
> >
> > Regards,
> > Joe
> >
> > "Mostrom, Paul" wrote:
> > >
> > > Listers,
> > >
> > > I am now well into the rebuild of a 1500 for my brothers MG Midget and
>since
> > > the block will be hot-tanked I need to do something about the cam
>bearings.
> > > Does anyone out there know of a source for cam bearings for a 1500 engine?
> > > I've heard that the stock 1500 cam can be replaced with an early 1300 cam
>and
> > > bearings, but I would rather not do that. Any and all help would be
> > > appreciated.
> > >
> > > Thanks,
> > > Paul Mostrom
> > > '77 Spitfire 1500
> > > > '80 Ford F-100 (Triumph Support Vehicle)
> > > >
> > > >
> > > 'Black holes, where God divided by zero......'
> > >
> > >
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