Richard Kal wrote:Hmmm.... when I reach the stage of engine assembly for my 4G, think I will machine an extended Tufnol spacer, with a couple of fins included.
Watch out for the distributor! The main reason that I had not fitted my Tufnol spacer yet was that initially I had the distributor the wrong way around - with the square 'condenser bulge' forward. This reduces the space available for the carburetter/spacer combination.
You'll see from my picture that there is very little room for the spacer before the carburetter hits the distributor, even with the bulge facing to the rear. You can extend the studs, and I may have to do that, but of course you need some space to get the carburetter off.