Hi All
I need to address some of the measurements I gave for the conversion in my earlier posts
Those measurements were for a roller bearing converted engineI have modified my original post now
On the converted engines the oil feed tube is nearer to the timing side than on the original bush setup
If the 17.5mm blanking screw was fitted to a bush engine it would block the feed to the crank
At the time I did not know or "twig" this vitally important point
It was only the other day when I went to change a Huntmaster engine to the modified setup that the penny dropped,
The "new" figure for the depth to the back of the oil feed hole to the bush is +- 1in. (25mm)
The new blanking grubscrew measures 0.5in (12.7mm)
Hopefully the Huntmaster casing is the same as A7/10 ? The important thing is to NOT interfere with the oil feed to the bush when fitting the longer blanking plug
OK, I realise the spring is now going to have less compression than on the roller bearing engine but figure 1/4in should work ??
John