dougbgt6 Posted July 19, 2015 Report Share Posted July 19, 2015 As far as I can find out the GT6 got a new head and domed pistons from 1972. Mine is a 73 and still has it’s original engine confirmed my heritage certificate. But I’m pretty sure, from what I remember (20 years ago), the engine had flat top pistons and got the same when it was rebuilt. Did they revert to flat top in 73 or have I got the wrong pistons? (A bit late to be worrying now!) Presumably if I’ve got the right head and the wrong pistons I’d have a lower compression ratio. Is this why I never overheat? Or why my engine is impervious to tweaking? Am I the only GT6 driver worried about NOT overheating? Link to comment Share on other sites More sharing options...
thescrapman Posted July 20, 2015 Report Share Posted July 20, 2015 you should be able to tell if you have a dome-topped piston suitable head by measuring, and you can see the domes through a plug hole, if you have them. Cheers Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 24, 2015 Report Share Posted July 24, 2015 if you cant see ive got a endoscope, you may need to wipe the lense first !!!!! Pete Link to comment Share on other sites More sharing options...
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