Discussion
Harris Performnce engines , well known in the Pinto & X/Flow circles ......
http://www.hpemotorsport.co.uk/
http://www.hpemotorsport.co.uk/
When you say stage 2/3 what do you mean?
For a road car big inlets only are fine but its all the other work you need to be aware of essentially spec ing your own head
3 angle valve seats, thinner valve heads throat opened out under the seat and the list goes on.
For a cheap head buy an injection head have large inlets fitted with the 3 angle seats have the throats enlarged and blended in, leave the ports alone just port match the manifolds then consider chamber volume with the gasket and piston deck height you are going to use
For a road car big inlets only are fine but its all the other work you need to be aware of essentially spec ing your own head
3 angle valve seats, thinner valve heads throat opened out under the seat and the list goes on.
For a cheap head buy an injection head have large inlets fitted with the 3 angle seats have the throats enlarged and blended in, leave the ports alone just port match the manifolds then consider chamber volume with the gasket and piston deck height you are going to use
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