Jon,
the only difference in the Midget 1500 block and a Spitfire 1500 block is that
P in the serial number (Spits are FM and Midgets are FP)
Of course there were other differences in things that were bolted on, but the
blocks are identical.
I had one that came out of Huxley my street/show Mk1 Spit before I restored it.
I wondered why the serial number was different until I discovered
that it was from a Midget.
Joe
Jon wrote:
>
> When the original 77 piston threw a rod through the side (pic at
> http://www.bigolbear.com/photo.htm), the only locally available fit was a
> 1500 engine from a 73 midget. The shop said it would fit and it did, I just
> swapped the head so it would have the valve seats to handle the unleaded
> gas. Other than having to change out the old single channel pulley so the
> smog pump belt had a place to run, its been fine. All the brackets,
> manifolds, mounts, etc lined up fine. Saw a thread (here I think)a few weeks
> ago where an ex engineer was saying the leaded seats would be ok with
> unleaded after they'd been run with leaded gas since enough lead remained to
> cool and lubricate. So maybe I didn't even need to change the head...
>
> Jon
> '77 (mostly) Spitfire 1500
> www.bigolbear.com
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