OST-029: California here I come.....

[oldeskewltoy]

(01-21-2015 08:12 AM)Bean Bandit Wrote:  the intake valve on the right got slightly more space to breath...

The chambers edge around the right intake valve has changed a tiny bit, so technically you are correct, but the answer I was seeking was the "softening" of the machined edge around the spark plug.

from another forum Wrote:The magic has begun!

(above pic was posted to one of my earlier build threads... had to use it again.... )




.... and now back to reality....

from another forum Wrote:How often do you come across variations in the chamber depths? I can't say I noticed it on my spare head, but I didn't look closely either.

The head this thread began with, that since has been replaced is the worst head I've seen. I've had to discard other heads because of flaws before*, but this is the worst head, at least in regards to correct chamber shape, that I've seen.

* - http://hachiroku.net/forums/showpost.php...ostcount=7


A short annotated photo showing the areas of work, and the similar area before work - no "hogging" here



the translucent redline shows us the port floor

1) The short radius - a gentle curve to the valves edge to promote cylinder filling
2 & 3 ) shaping the bowl to the seat, further promote cylinder filling
4) "Opening" the passage between the splitter and the guide, allowing the airflow easier passage past the guide - once again to aid in cylinder filling.

Nothing drastic, just taking a mass produced part and making it better




More to come......