04-10-2020, 10:41 PM
(This post was last modified: 04-10-2020, 10:45 PM by Bob Culver.)
Hi Circeonya
For thicK gaskets the heavy paper in banan boxes is useful.
Hi Steve
when I was a schoolboy around 1950 I was given the job of cleaning the sump of our Seven. it was used extensively for short runs and with the oils of the time th sump was often fill with grey sludge with a burrow where the oil pump lived. Main bearing life was always short. the balls and tracks appeared matt grey.
In later times with later oils and extensive main road running no trace of sludge and bearings fine, retaining chrome like finish. As i have mentioned before i suspect a thermostat would do more for many Seven engines than the exotic oils often passed through.
The valve appears oversize. I dunno what modern valves are made of but many Seven valves were not even XB steel. Driven hard life between valve grinds was ony 5000 miles or so. modern steels (non magnetic) are remarkble; from experience with other cars will function with cracked seats etc and still not burn.
For thicK gaskets the heavy paper in banan boxes is useful.
Hi Steve
when I was a schoolboy around 1950 I was given the job of cleaning the sump of our Seven. it was used extensively for short runs and with the oils of the time th sump was often fill with grey sludge with a burrow where the oil pump lived. Main bearing life was always short. the balls and tracks appeared matt grey.
In later times with later oils and extensive main road running no trace of sludge and bearings fine, retaining chrome like finish. As i have mentioned before i suspect a thermostat would do more for many Seven engines than the exotic oils often passed through.
The valve appears oversize. I dunno what modern valves are made of but many Seven valves were not even XB steel. Driven hard life between valve grinds was ony 5000 miles or so. modern steels (non magnetic) are remarkble; from experience with other cars will function with cracked seats etc and still not burn.