OST-069: Transformation

[oldeskewltoy]

(01-02-2021 12:41 PM)Vaptor Wrote:  SO another Newbie question

36cc vs 37cc, is there a sweat spot on a 4age, or is this just to get the correct combustion ratio?

What is the standard chamber volume, on a 16V Big port?

We are fine tuning final compression ratio. In this case 36cc along with his piston choice, and gasket choice deliver the final CR desired.

Standard 16V chamber is 36cc. In this case to get the chambers de-shrouded it required adding 1cc of volume.

(01-02-2021 09:49 PM)banpei Wrote:  What does the intake oil drain do? Prevent oil from getting clogged up in the head?

It helps keep oil down in the oil pan. The 4AG largeport head only drains on the exhaust side - fine for transverse layout, but in a longitudinal layout a long left hand sweeper can emply the oil pan of oil and pack it into the head. Additionally it helps with a catch can as often times the catch can fills for the same reason.