Hi All,
It was actually the second rod. When I bought the car from a friend,
I had to rebuild the bottom end - the #3 and #4 rods had spun
bearings. (I knew the engine was bad when I bought it)
I had the oil galley enlarged at the time.
I'm not sure what caused it this time. Here is a link to a picture of
the bearing. ( http://www.kcallbritish.com/spitfire/rodbearing.jpg) It
was hammered down and over the edge of the rod.
Yeah, I suppose I am going to some extra work to keep the cam. But I
figured if I am having bearings added to the block, it probably would
not be much difference in cost whichever bearing I have put in. But a
new cam is going to be about $200 additional that I might not have to
spend if my cam checks out and it only has a few thousand miles on it.
I was also considering asking the machine shop if they can machine down
the journals. The manufacturer is out of business, so I can't go back
to them. So I am mainly trying to be ready for different options.
Thanks,
Roger
On 09/21/2012 07:41 PM, Joe Curry wrote:
Yes Bill. "Let a Professional do it"! :)
JOe
-----Original Message-----
From: Bill Gingerich [mailto:[email protected]]
Sent: Friday, September 21, 2012 4:19 PM
To: 'Joe Curry'; 'Roger Elliott'; 'Spitfire list'
Subject: RE: [Spits] Cam Bearings in 1500
Was it the #3 rod?
I've never seen bearings for what you're talking about. It seems like an
awful lot of work to avoid finding a small journal cam. Perhaps your
existing cam can be machined down to the correct size. But I'm with Joe on
this one - leave the block alone.
If you haven't already, seriously consider enlarging the oil galley in the
block as per the competition prep manual. It helps that #3 rod bearing live
longer.
I don't know if there is a trick to putting the bearings. I was considering
doing this when I did my 1500 several years ago, but decided to let it ride.
Joe - any wisdom on installing the bearings in the block?
BillG
74 Spit
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Joe Curry
Sent: Friday, September 21, 2012 1:27 PM
To: 'Roger Elliott'; 'Spitfire list'
Subject: Re: [Spits] Cam Bearings in 1500
The best way to install cam bearings in a 1500 block is to use a cam for an
engine that was originally equipped with cam bearings. That way you don't
have to bore those journals. The Mk3 for example had cam bearings which use
the same size block borings as the 1500 but have the cam journals sized
smaller so the bearing will fit between the block and the cam.
Joe
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