S13 SR20 idle air flow path - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mr.nismo. · 09-20-2020, 09:21 PM

I decided to leave the head alone for the reasons you listed. I didn't polish up there either, as I know the roughness helps w/ mixture before entering the cylinder. All the work I did was just on the plenum to runner side. I also took material off the plenum at the throttle body mating as there was a huge lip sticking up from the bottom side of it. Otherwise everything is assembled and back on the motor.

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09-20-2020, 09:21 PM	#8
mr.nismo. Nissanaholic! Join Date: Feb 2012 Location: Oxnard, CA Age: 28 Posts: 1,876 Trader Rating: (31) Feedback Score: 31 reviews	I decided to leave the head alone for the reasons you listed. I didn't polish up there either, as I know the roughness helps w/ mixture before entering the cylinder. All the work I did was just on the plenum to runner side. I also took material off the plenum at the throttle body mating as there was a huge lip sticking up from the bottom side of it. Otherwise everything is assembled and back on the motor. Sent from my SM-N986U using Tapatalk