Joe, I'm in the middle of trying to get to the track but saw this note and
wanted to caution - when installing cam bearing in engines originally
without - chamfer the leading edge of the hole to provide a lead-in for the
soft bearing. Also, you can have 1500 cams reground to fit.
----- Original Message -----
From: Joe Curry <spitlist@gte.net>
To: Grant Buss <buss3@sympatico.ca>
Cc: Mostrom, Paul <Mostrom.Paul@principal.com>; <Spitfires@autox.team.net>
Sent: Tuesday, March 28, 2000 7:44 PM
Subject: Re: Cam bearings for 1500
>
> 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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