CA PORTED s-14 KADE intake mani, AWESOME for KA-T or s-13 KADE!!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

racepar1 · 11-09-2009, 03:04 PM

I hand ported this mani and got completely through the runners. I was careful not to change the shape of the port where it meets the head so that the mani will work right with a stock head. This would be an AWESOME upgrade for an s-13 KADE (especially KA-T) as it also elimintaes the stupid secondary butterflies in the s-13 mani.

SOLD!

98_240sx_se · 11-09-2009, 04:49 PM

what did you use to port it? hard to tell the finish in the pics.

racepar1 · 11-09-2009, 05:12 PM

Quote:

Originally Posted by 98_240sx_se

what did you use to port it? hard to tell the finish in the pics.

I ported the area near the head initially with a grinding stone that is for porting aluminum, then I smoothed it up with a sandpaper flapper bit. The runners and plentum I just worked with the flapper disc to smooth the casting defects and marks. The finish is as smooth as I would want it to be. You don't actually want to polish your ports, you want a certain finish. A small amount of roughness on the walls creates a turbulent boundary layer, which increases airflow and prevents fuel from gathering on the port walls.

11-09-2009, 03:04 PM	#1
racepar1 Post Whore! Join Date: Jul 2007 Location: Simi Valley, CA Age: 42 Posts: 9,006 Trader Rating: (106) Rides Gallery: racepar1 Feedback Score: 106 reviews	PORTED s-14 KADE intake mani, AWESOME for KA-T or s-13 KADE!!! I hand ported this mani and got completely through the runners. I was careful not to change the shape of the port where it meets the head so that the mani will work right with a stock head. This would be an AWESOME upgrade for an s-13 KADE (especially KA-T) as it also elimintaes the stupid secondary butterflies in the s-13 mani. *SOLD!* Last edited by racepar1; 11-10-2009 at 03:55 PM..

11-09-2009, 04:49 PM	#2
98_240sx_se Leaky Injector Join Date: Mar 2008 Location: eureka, ca Age: 37 Posts: 126 Trader Rating: (4) Feedback Score: 4 reviews	what did you use to port it? hard to tell the finish in the pics.