Tuesday, September 26, 2006

Cylinder Head Start

I have been far too busy working on the Spitfire recently! Firstly the fuel that was leaking out of the carbs has been stopped! Despite replacing the needles and spacing the fuel pump away from the block with a few gaskets there was still an abundance of leaking petrol. For the time being I have installed a Malapassi Filter King that I bought from my local tuning goodies shop (Midland Performance Centre) where they are always friendly and the prices are keen!

I have also got hold of a cylinder head to port! I missed an ebay auction for one and, when it didn't meet its reserve, I nipped in there with a cheeky offer and got it. I've been getting at it with the grinder ever since it arrived and now I know why getting cylinder heads modified is so expensive! It is very labour intensive work. My intentions are to port match the head to the manifold and to smooth the ports out and finish them with 60 grit paper to promote fuel atomisation. I will polish the exhaust ports and chambers to prevent carbon build up and then I will get 3 angle valve seats done on the valves and seats. At the moment I am dealing with the port around the valve guide which is heavily enclosed by the port (see the pictures). It is still work in progress and it is still far from finished!

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