How does this port look??
#2
talking head
nice attempt,, bevel is good at top but needs a slight one down the edges and along the bottom lip also
( though not as extreme as the top lip )
this is to stop the sharp edges raising into the chamber as they expand with heat and making the apex seal skip across the housing
( the top bevel is to stop the sharp edge expanding out and taking out the crowned edge of the apex seal )
some will argue its not necessary,, but they will change that opinion if they ever do a pull down to note evidence of the skip
( like a carbon skip stain yet a nice shiny mark at the exhaust edges )
( though not as extreme as the top lip )
this is to stop the sharp edges raising into the chamber as they expand with heat and making the apex seal skip across the housing
( the top bevel is to stop the sharp edge expanding out and taking out the crowned edge of the apex seal )
some will argue its not necessary,, but they will change that opinion if they ever do a pull down to note evidence of the skip
( like a carbon skip stain yet a nice shiny mark at the exhaust edges )
#5
talking head
you can search the subject and you will find ito and others have some good info abouts regarding
general consensus is 1-2mm edges and floor,, 2mm top at a 45 degree angle
#6
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big bevel on the top ( to save the apex crown ) ,, slight bevel everywhere else ( to save the apex skip )
you can search the subject and you will find ito and others have some good info abouts regarding
general consensus is 1-2mm edges and floor,, 2mm top at a 45 degree angle
you can search the subject and you will find ito and others have some good info abouts regarding
general consensus is 1-2mm edges and floor,, 2mm top at a 45 degree angle
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