30-06-2020, 07:56 AM
Derek, I had problems with my chummy which I thought I had resolved with various heat shields and a red fibre insulator between carb and inlet manifold. It’s on here if you search “boiling petrol”. BUT Tony Griffiths now has the chummy and he had a different solution involving wrapping copper wire round the manifold/carb junction. Note the chummy has a sidedraught SU carb. Tony may be able to show you his modification on here. Cheers, Dave.