D16Y8 intake manifold flowed

flowed today the intake manifold to see the loss of cfm. in a previous entry i spoke about  this manifold(how good is compared to other D ntakes) and surprisingly lost more cfm than a D16Z6 intake. 3.5% more of airflow loss. maybe the benefit of this intakes resides in the bigger plenum but for turbo applications. need to compare the runners each others. z6 runners are 20mm longer, but with less angle towards the intake port of the head. 

D16Y8 225CFM !!

last night worked more on a spare D16Y8 cylinder head. developed a new idea, removing less material, playing with flow balls and understanding  where the air wants to flow.
achieved  225CFM at only .380" of valve lift.
now going to planish the head .7mm.

pics of  finished head soon.

kh7+brush

clean and ready to work.

D16Y8 intake manifold

new project for the d16y8 customer.
jaas flowed intake manifold. this intake works far better than the one that is used on other D16 engines.
plenum has more volumen, but runner entry area is more elliptical.

checking for leaks

D16Y8

Almost finished D16Y8 head. Need to buy a grinding stone to reshape and clean the exhaust valve seat angles, check the seal of intake valves and cc the chambers and done.
this cylindder head is going to be raced with OEM camshafts, so the goal was to achieve the maximun flow at low valve lifts. finally, achieved 205CFM at .380" in intake and 182CFM at .3"  in exhaust. Thats an increase in flow of  > 15%, combined with a jaas flowed intake manifold, which is a estimated gain of 6% more of airflow.
Bear in mind that i always mention airflow, but most important is the speed of that airflow, which raises your volumetric efficiency and fills the power(torque) curve between the maximum torque point and maximum rpm.

Dogde deora

Amazing concept of dodge deora 65'.