Good subject and very important issues for engine builders.

High mileage V8 engines are surely 'in the past'?

Most engine builders of the V8 variety are for drag racing duties...
We know you can't compress oil to less than 0.0005 thousanths so a journal must have a minimum of 0.001.
That being the MIN whats the MAX?

Me I would say min 0.002 and max 0.003 is a safe working range... thumbs

Some engines 'rattle' when cold and will quieten down once the oil and parts are warmed up.
They have cold clearances in excess of 0.005!

I am at a stage now where my race engine may only get 'two or three' runs a year!
So the issue is not from wear, but 'lack of use' lol... fan

Not 100,000 miles but a 100,000 inches...(1.58miles) Santa5

Last edited by Gtxxjon; 11/26/21 06:20 AM.
Carpe diem, quam minimum credula postero, thanx Horace!

There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...