Head porting and polishing and 3 angle valve seats

[TURBO maniak]

Hi,

I want to ask you friends, is the original COSCAST head make with 3 angle valve seats or no ?
If this is true wath are angle degrees ?
Wath is your opinion for head porting and polishing.
Wath is your opinion for that high performance made valve compare with stock that is to the picture.
Can i remake my stock valves to look like this to the picture.

Sorry for bad English

regards TONY

 

[Topbuzz]

This is the information on c20let head as found on TIS

I don't know if the COSCAST heads came with 3 angle valves or not, thought they were the same as C20XE heads.
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[JohnA]

I didn't find the stock LET valves too bad at all (yes, 3-angle jobs they are)

Take a look at my website under 'breathing', then 'cyl head'

www.max-boost.co.uk

 

[TURBO maniak]

Hi JohnA,

Thank you for very interesting web site :wink:

regards TONY

 

[JohnA]

:lol: :twisted: