Hondaclub-belgium.be

We know the Y8 Intake Manifold is bigger than the Z6 Intake manifold, but by how much ...nobody really knows so we figured we would measure what the internal volumes are.

Using a VERY scientific and accurate measuring techinique ... NOT !!!! ... we measured the runner volumes and plenum volumes of both the Y8 and Z6 by sealing the various openings with duct tape, and filling the runners and the plenum with water and then measuring (using a standard kitchen measuring cup) the amount of water first in the entire IM and then just the runners, thus by simple subtraction we can also deduce the Plenum volume

This is what we found. Keep in mind that the numbers are not particularily accurate, but they are intersting none the less.


Z6
Total IM Volume 1900cc
Plenum Volume 800cc
Cyl 1 and 4 Volume (longest runners) 275cc
Cyl 2 & 3 Volume (shortest runnners) 275cc

Y8
Total IM Volume 2450cc
Plenum Volume 1450cc
Cyl 1 and 4 Volume (longest runners) 275cc
Cyl 2 & 3 Volume (shortest runnners) 240cc

So the Y8 is 25% larger overall, has 45% more plenum volume, and has mis-matched runner volumes with the inner runners having 15% less volume than the outer runners, and its outer runners are the same volume as the Z6.

What this all means in power gains is a bit of a guessing game, but some prior dynopulls I did show a loss in power below 4000 rpm bump in the power between 4500 and 5500 rpm and a general increase in power from about 6000 to fuel cut which I atribute to the Y8 IM.

So there ya go

Cheers

Moose

oggear schreef:ik ben dit jaar gekeurd geweest met een z6 inlaat op men ej9, daar hebben ze geen seconde over gezeikt

Connix schreef:euhm nee? dakheb daar veel al gelezen gehad maar dat nog niet tegengekomen? linkske eventueel van da topic dat ge dat tegen gekomen zijt? mag in pm

Connix schreef:euhm nee? dakheb daar veel al gelezen gehad maar dat nog niet tegengekomen? linkske eventueel van da topic dat ge dat tegen gekomen zijt? mag in pm