FWIW
Glen
--Previous Message--
: This cam is still confusing me.
: Actually, it is more accurate to say it
: is making me angry. I literally spent
: all morning looking at the installation
: and measuring things about it. I still
: don't know what I want to do.
:
: Just to confuse myself more I diverted
: myself to a non-running 1300 engine I
: have behind the house. I took enough
: components off to find TDC with the
: degree wheel and set about the task of
: measuring the max lift angle for intake
: #1 and looking for the
: crossover/overlap point for the cam
: lobes. Let me start by restating that
: this is a non-running engine which we
: removed from our Spitfire right after
: we bought it as a project. It never
: ran right for us and this is the first
: time I have looked inside. After
: finding its true TDC I measured and
: found that max lift for intake #1 was
: at 119 degrees... 9 degrees late for a
: standard cam. Then I looked for the
: crossover point and found it to be...
: 9 ATDC... also 9 degrees late. So the
: 1300 never had the correct valve timing
: but with both the LCA and crossover
: occurring 9 degrees late, the numbers
: verified my measurement methods (if the
: crossover had been set to occur at TDC,
: the lift peak for intake #1 would have
: been at 110 ATDC). This suggest even
: more than before that there is
: something 'not standard' with the cam
: in our 1500.
:
: Is there an index of casting/forging
: numbers for factory cams? This cam
: does have "Stanpart" on it
: between lobes 1 & 2. Also between
: lobes 1 & 2 are some nearly
: illegible numbers that "look
: like" 88812188. Between lobes 6
: & 7 is the number 25 over the
: number 224.
:
: I am so fed up with this cam I am ready
: to buy a replacement... or take the one
: out of the 1300 and use it. Of course,
: I could still put the timing back where
: it was before engine disassembly, or I
: could split the difference between that
: and setting the overlap at TDC... or I
: could just set the overlap at TDC and
: see how it runs. Like I said, this cam
: is making me angry. I was hoping that
: this part of the engine rebuild would
: be history at this point.
:
: Doug L.
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