hessam69
Well-known member
- Joined
- Jun 19, 2009
- Location
- Sydney, Australia
Quote from stealths page:
I have long believed that to remove material from the deck surface in amounts greater than the absolute minimum needed to restore flatness was not wise; whether the head be iron or aluminum. As a result of this forced, but not unwelcomed or regretted, excercise and investigation; my bias against such material removal has only intensified: to "shave a head" to raise compression ratio, especially on an aluminum head, is very ill-advised; and to do that on an aluminum head used in a boosted motor is, as I have come to see things, a very stupid and counterproductive idea....if you are concerned with longevity and durability.
This goes against John Vanlandinghams idea that you should shave 1.5mm off the head.
So who's right?
I have long believed that to remove material from the deck surface in amounts greater than the absolute minimum needed to restore flatness was not wise; whether the head be iron or aluminum. As a result of this forced, but not unwelcomed or regretted, excercise and investigation; my bias against such material removal has only intensified: to "shave a head" to raise compression ratio, especially on an aluminum head, is very ill-advised; and to do that on an aluminum head used in a boosted motor is, as I have come to see things, a very stupid and counterproductive idea....if you are concerned with longevity and durability.
This goes against John Vanlandinghams idea that you should shave 1.5mm off the head.
So who's right?