3 angle valve job

[Wanganstyle]

pics don't seem to work?

https://picasaweb.google.com/112858861538646614089/Worked731Head

[digger]

https://picasaweb.google.com/1128588.../Worked731Head

still nothing

[jamesthebikeguy]

still nothing

Works for me? Looks good too

[digger]

here is a properly done m20

what about it is proper?

you aren't supposed to match the exhaust port and headers.............

[Wanganstyle]

no one said match port, just ported to suit cam + longtube headers and alpina pistons

[digger]

no one said match port, just ported to suit cam + longtube headers and alpina pistons

you said match headers?

what valve sizes and average CSA?

Works for me? Looks good too

nobody can tell a good port by eye..... upto L/D=0.25 it is mostly seat and valve that govern flow because the curtain area is smaller than the port CSA (typically) then at large lifts it is is the rest of the port.

[Wanganstyle]

this work was done more than 10 years ago when H&B was still around, when engine dynamics still alive (owner died in airplane accident), I did not commission this. My local engine builder could ID the engine and work from the vintage era and pinned it down to the workshop and confirmed after we found the stamping