sulzerman Posted December 2, 2014 Report Share Posted December 2, 2014 Hi all I am soon to remove the head off my 1500cc spitfire can anyone recommend any improvements while it is off. Polishing ports ect?? I will be converting to unleaded. thank you Link to comment Share on other sites More sharing options...
JohnD Posted December 2, 2014 Report Share Posted December 2, 2014 http://tecb.eu/onewebmedia/Tuning-Triumphs-over-1300cc-by-vizard.pdf That and unleaded exhaust valve seats. JOhn Link to comment Share on other sites More sharing options...
p7rider Posted April 3, 2015 Report Share Posted April 3, 2015 Good information . But will ideas on good gas flow have changed in 40 years ? Or are we stuck with what worked then with the basic design of the heads . Link to comment Share on other sites More sharing options...
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