greetings!
anyone have experience with superior's "Millenium" cylinders for the continental O-470?
some years ago i had a set on a lycoming O-540 and they were terrific! easy break-in, low oil use, very balanced flow, and very smooth!
now it's time for cylinders on my O-470 and my engine shop says he can't recommend them due to "...chronic low compressions and high oil usage". something about them not having the ring/barrel hardness combination just right.
what gives? how could superior have gotten it so right with lycomings and so wrong with continentals? i'm wondering if he's just had a bad business relationship with superior (warranty beef, etc.) and is not recommending them for that, not that there's something technically wrong with them.
so i'm looking for real-world, non-biased experience here. anyone got anything? i sure liked the milleniums on my O-540 and would very much like to repeat the experience on my O-470.
thanks in advance!
blue skies,
anyone have experience with superior's "Millenium" cylinders for the continental O-470?
some years ago i had a set on a lycoming O-540 and they were terrific! easy break-in, low oil use, very balanced flow, and very smooth!
now it's time for cylinders on my O-470 and my engine shop says he can't recommend them due to "...chronic low compressions and high oil usage". something about them not having the ring/barrel hardness combination just right.
what gives? how could superior have gotten it so right with lycomings and so wrong with continentals? i'm wondering if he's just had a bad business relationship with superior (warranty beef, etc.) and is not recommending them for that, not that there's something technically wrong with them.
so i'm looking for real-world, non-biased experience here. anyone got anything? i sure liked the milleniums on my O-540 and would very much like to repeat the experience on my O-470.
thanks in advance!
blue skies,