It should be REAL easy to tell at a glance if it is an 1147. The early
engines had only two intake ports, the other three types had four.
Triumph provided four distinct engines for the Spitfire - the 1147, the
1296, the 1296
and the 1500. Based on the engine number, you have the third type.
Though the bore
and stroke are the same as the Mark 3 1296, the block is a completely
different casting,
the crank has larger bearings. Basically it is a shorter stroke version
of the 1500.
I'd suggest you first pull the pan and check the thrust washers. If
they fell out, you may have
just purchased some scrap iron. Then if it is worth it, pull the head
to check the valves
and condition of the cylinder bores, decide if the crank needs to be
turned, etc. There's
a fair bit of performance work one can do to the various Spitfire
engines. Do you have
copies of Kastner's books?
--
mjb.
http://fatchancegarage.com
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