New 20b intake plenum and runners

		Rotary Car Club > Tech Discussion > 20B/3 Rotor Conversion..
New 20b intake plenum and runners

20B/3 Rotor Conversion.. All things to do with 20B/3 rotor... Post pics, video, tech, etc..

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12-22-2010, 05:13 PM	#1
gmonsen The Ancient One Join Date: Mar 2008 Location: Eastern Pennsylvania iTrader: (0) Posts: 144 Rep Power: 17	New 20b intake plenum and runners One of the biggest problems with running a 20b NA is getting air into the intake ports. I found that with th stock upper intake, you run out of air at about 5500 or so. So, we designed a new intake plenum and runners. Here are some pictures of the plenum canister, the ends of it, and the first runners being made. The guy doing it, Victor Yordy, got cute and made a "G" on the end of the plenum. I am having him remake it with a "7" on it exactly like the "7" I'm using in my new emblem. Gordon Here's the design we started with, although it has changed in the dimensions. The plenum is now 7 inches in diameter and the runners start at 2 inches and taper down to 1.5 inches... Here's the 7 inch diameter plenum canister... Here's the "G" he embossed (right?) on the end of the plenum. He's going to make it with a "7" instead (like in my new emblem)... Here's a runner being made. The max we can go at the plenum is about 2 inches in diameter and the LIM has 1.5 inch diameter runners, so that's the most taper (increase in velocity) we could do... __________________ 1993 Rx7 R1 20b NA 1994 Rx7 20b supercharged project 1991 BMW 850 6 speed 1991 BMW E30 M3 Evo II

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