Forged or Cast pistons ?

[steve-V8s]

OK you knowledgeable people.

What is the benefit of forged pistons over cast and do they have any disadvantages other than costing more money?

[steve-V8s]

That sort of confirms what I have been told.

The people that built the bottom end of my Rover V8 say that the higher oil consumption and sump compression is normal because of the forged pistons.

[steve-V8s]

Thanks for the link that looks interesting

Mine is a V8D engine and it is not the oil consumption that concerns me as much as the sump pressurisation. Even with two 15mm breather pipes it still ejects the dipstick.

[steve-V8s]

Kokkolanpoika said:

Hope some one understand my English..

Your English is just fine, thankyou for the reply.

[steve-V8s]

I think V8D like the VR1 oil because it is one of the few oils that still have additive to help prevent cam lobe wear.