23-09-2019, 08:20 PM
When we built the engine for the supercharged car, I opened up the holes feeding the big ends on the new 1&5/16ths Phoenix crank rather a lot and radiused the troughs leading into the holes. We did the Mike Forrest double oil jet conversion on the car and I wanted to make sure that as much oil as possible made it to the bearings
We run it on 20W50 and I've got 4 to 6lbs when hot using a bored out oil pump. It's as much to do with cooling the innards as it is lubricating them. We did the paraffin pump trick to ensure that all 4 jets were arc'd to ensure maximum spraying time and hence volume into the crank troughs
In comparison the troughs and holes in the 1.1/2 Type "65" sports crank are shallow and very small which tends to agree with others logic that this is a potential cause of bearing failure on the sports engines
Aye
Greig
We run it on 20W50 and I've got 4 to 6lbs when hot using a bored out oil pump. It's as much to do with cooling the innards as it is lubricating them. We did the paraffin pump trick to ensure that all 4 jets were arc'd to ensure maximum spraying time and hence volume into the crank troughs
In comparison the troughs and holes in the 1.1/2 Type "65" sports crank are shallow and very small which tends to agree with others logic that this is a potential cause of bearing failure on the sports engines
Aye
Greig