After talking to Art, apparently I am not making myself very clear.
So, I'll try again.
The issue has been attempting to verify that a TR6 head I received
went to the block which came with it. Unfortunatly, the only
identifing marks on the head are a stamped six digit ID, a six digit
casting number, and then physical dimensions. Not knowing the history
of the part, I don't even know if the dimensions are 'stock' or
'modified'. Unfortunatly, I cannot find any cross reference for these
ID marks/cansting numbers to year, or even model of car.
Thus, I would like to put together a table that lists the various six
cylinder heads that were used on Triumphs throughout manufacture as a
function of year/model. The list criteria will include:
commission/engine number, e.g., CC75000UE to CF1
head part number (TRF), 520868
head casting numbers, 312388
stamped numbers on the head, 218227
thickness (stock), 3.546
in compression ratio (stock), 7.75:1
# of valve springs, 1 ea
exhaust valve size, 32 mm
EGR port, no
intake port spacing, later carb
I would appreciate your help in filling in the missing information. I
would need as much of the above information as possible from original,
unmodified engines. Once compiled, I will post here and forward on to
the keeper for the TRF page for future reference.
I originally started with TR5/250/6, US and abroad, but will be happy
to include GT6 and 2.5/2000/2500 salons, and TR2-4, 7-8 if I can get
the background info. I have first pass identified the following
models as seperate entities:
PI models US Carb models
67-68 '5 <CP3096 67-68 250 <CD8594
69-71 '6 <CP75000 69-71 '6 <CC75000
72 '6 CP75001 - CR1 72 '6 CC75001 - CF1
73 '6 CR1 - CR5000 73 '6 CF1 - CF12500
74-75 '6 >CR5000 74-76 '6 >CF12501
Again, if this has been done before, please let me know. Also if the
information is available somewhere else.
Thanks for the support.
Scott Mackay
Austin, TX
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