I'm helping my mate recomission his Cox Gtm which is fitted with a 1330 a series engine with worked head and we think a 286 cam it came with a 40 dcoe fitted which is in a very poor state so we have decieded to fit a Hif 44 su to get it running and make it easier to set up at home before getting it on the rolling road. What needle/ spring would you advise as a starting point to get it running at a safe level?
Andy.