ZR-1 Net Registry Forums - View Single Post

batchman · 02-11-2015

I've wondered what goes on inside the plenum, is post #52 stock inside?

I would think there could be some merit in taking an approach found on SHOs and late four-valve 4.6s: differing runner lengths for the 2 valves.

Adding something like a french cut exhaust tip on 1st, 4th, 5th and 8th runner one side, maybe 3-4", with the opposing one offset to the other valve. Hope I'm describing this reasonably.

Just a thought,
- Jeff

02-11-2015	#60
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: Frankenplenum I've wondered what goes on inside the plenum, is post #52 stock inside? I would think there could be some merit in taking an approach found on SHOs and late four-valve 4.6s: differing runner lengths for the 2 valves. Adding something like a french cut exhaust tip on 1st, 4th, 5th and 8th runner one side, maybe 3-4", with the opposing one offset to the other valve. Hope I'm describing this reasonably. Just a thought, - Jeff __________________ [I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I]