19-04-2022, 09:45 PM
The Mason Bee nest was only what Alistair told me he found when we were trying to diagnose the issue over the phone. Check the bore sizes of the oil feed take off union and the lines that go the the oil filter are adequate, also look at how the oil gallery's have been modified to feed the filter and then the jets, you obviously had inadequate oil to number one and two.
I raced my special for many years with Jet feed and a Phoenix crank and I never encountered any problems with lubrication of the bottom end, the oil pump and pick up was modified, jets were realigned, crank troughs modified, camshaft bushes O ringed and restricted etc all as I have posted about in the past. The Mike Forest 4 jet mod may be worth while for additional security if you have enough oil pressure and flow to cope with the two extra jets, but I have not found it necessary particularly with modern oils and filter. That last part is probably even more relevant in a road car that never runs at a sustained 6000 RPM+
I raced my special for many years with Jet feed and a Phoenix crank and I never encountered any problems with lubrication of the bottom end, the oil pump and pick up was modified, jets were realigned, crank troughs modified, camshaft bushes O ringed and restricted etc all as I have posted about in the past. The Mike Forest 4 jet mod may be worth while for additional security if you have enough oil pressure and flow to cope with the two extra jets, but I have not found it necessary particularly with modern oils and filter. That last part is probably even more relevant in a road car that never runs at a sustained 6000 RPM+
Black Art Enthusiast