I have communicated with Draganfly (which I should have done at the outset) and Roger confirms that the stock of the "sump plates" do need modifying. Aparently most are sold for use as the timing side bearing covers (not needing the recess) and made in house. The stock will be re-machined ...

Thanks John, I take your point, but to be totally honest I am fed up with some of the rubbish parts that have come my way restoring other makes and also to many of my aquaintances (and in seemingly in increasing quantities and varieties). Only 2 weeks ago I was sent a speedo bezel with no thread (no...

During final assembly of my recently rebuilt 4G, on fitting the crankcase inspection plug - a final nip with a spanner left the ring of threads in the crankcase and the cap in my hands. No problem as the threads came out easily and a new billet cap as opposed to the original cast one was obtained fr...

Thanks to this forum and Bruce Longman, I am pleased to report that my iron 4g now runs and although not yet used under load, has consumed a few pints of petrol over a number of runnings and seems to be freeing up nicely. I used the =+ 0.060 AE16179 pistons previously mentioned in front bores with 0...

I forgot this one and is also about the orientation of components. The connecting rods on my iron 4g are the later with the shell bearings. Are there any thoughts which way round they should be fitted to the crank in relation to the shell indents on rod and cap, which are on the same side of each as...

Following my post back in july re pistons for my iron 4g, that had been bored and little ends re bushed, to take + 040 BMC pistons and then left to rust, I located a set of nos + 060 BMC pistons after months of searching. Got them from Bruce Longman (why did I not try him sooner) together with other...

Thanks Roy. Standard bore size as you know for the square 4 is 65mm. Some BMC A series engines are 64.5mm, the 0.5mm difference equating to approximately 20 thou. As I see it, even if I use +.060 BMC pistons, I am still at + .040 on the "Ariel" size, leaving another rebore to +.060 "A...

Hello, this is my first post. Last August I took over a VERY long term project, being a 1947 rigid/teles 4G. This is my first Ariel and now looks like a motor bike again. A good deal of the engineering work such as crank regrinding and reboring had originally been done, but unfortunately the cylinde...