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^^^simple answer is that the de valvetrain works good and cures our valve floating problem and its cheap to do. The Ferrea setup is like $1400

I don`t freqent the boards enough to post day to day and I apologise in advance.

Milling the KLZE head`s to increase CR ( compression Ratio ) is a waste of time as you
lose that lovely combustion chamber area that promotes good swirl.

On a side note I have raced engines at 10:1 and the same engine at 18:1 the
hp gain on the dyno was there, the reliability HELL NO! and the blend that went
in the tank was enough to make your eyeès water!!

I personally do not have a issue of timing problems as I have adjustable gears for
both cams ( totally trick stuff )

The ports as Seven has stated and I have in a previous post are simply to big!
Rasing the floor of the port on a flow bench has gain results, but then you have to
change the shape of the intake mainifold to match.

Knifing the devider creates a lot less reverse action in the intake pulse.
( engines are not constant flow they pulse, air flow starts and stops )

I have always polished my combustion chambers to a mirror finsh and my
ports have always had a bead blast finish, though one trick on a motor
that simply would not atomise the fuel was to cut two slots arouns the port
about 0.40 wide and 0.40 deep to create ridges to promote turbulance.

pics of these totally trick cam gears you got

hmm, I can't see em.

meh well I was bored waiting for parts to arrived so I went ahead and knife edged intake ports, removed intake casting lines, smooth inside transition. On the exhaust side I removed the cast lines, smoothed the machining into the cast and semi polished it. I expect FA gain really, but there was alot of bumpy cast defects that the previous carbon was latched onto, so I did it to prevent that more than see a gain as such. I'll no doubt get a dyno, but don't have an original to compare to!

se7en wrote:hmm, I can't see em.

Sorry Seven try this link its a posting from my earlier nick that was on the boards
http://www.mx-3.com/phpBB3/viewtopic.ph ... 23#p390623

Once again sorry......but enjoy the pics.

ok i see the hump on the floor of the intake side on the ze heads...can that be grinded flat or will it protrude into a coolant passage/oil passage....otherwise i 'll just polish it