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Old 03-01-2011, 03:41 PM   #1
K Dog
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Massive PORTWERKS Duratec ULTIMATE Cylinder Head finally available!!!

For Ford 2.0/2.3 Duratec powered vehicles.

These heads have been through years of development and "back-burnered" long enough!!!

Finally released to the public - out ULTIMATE CNC ported cylinder head for the Duratec!

Here's the dirt:

Simply the best head money can buy.

Massive has created the worlds TOP FLOWING CYLINDER HEAD SERIES for modern Ford 4 cylinders!!!

5 Axis CNC machined for the best in consistency and flow!

In our quest for power superiority, OE heads are flow tested on a Superflow SF-600 flow bench at 28 of water to determine base line flow numbers. After the initial flow test the heads were ported by hand to develop a working port shape and volume. The head was then reflowed after hand porting to verify the increase in flow. The heads are then reverse engineered using 5-axis digitizing to acquire the port shape of the finished port. This makes for the greatest possible flow capacity and consistency.
Heads begin as production cores which are fully disassembled and hi temp rwashed. The heads are then glass bead blasted clean to remove any rust or scale. They are then CNC machined using 5-axis simultaneous machining. All ports and chambers are machined then hand finished to blend out any unwanted tool marks. All valve guides are honed to size and a multi-angle valve job is cut into the head. The valve job is cut using Newen single carbide insert style cutters of varying profiles. The valve job is hand lapped in then blended to the finished port and chamber. The heads are then surfaced and reflowed again to confirm that the finished product performs as expected. Our designs outflow ANY competitor Zetec/Duratec head without sacrificing velocity. Substantial chamber modification for superior flow dynamics and greater resistance towards detonation. NEW on 2011s heads:
  • Crower high rate valve springs allow for elevated RPM usage without float. High boost applications WONT force force them open.
  • Crower lightweight Titanium retainers. This reduced valve train weight allows faster revs and avoids valve float while maintaining strength.
  • SuperTech OVERSIZE +1mm undercut stainless steel black nitride hardened valves. Undercutting, in addition to reducing the valve weight (which provides benefits in opening rate and RPM limits) the radius of the head is such that is significantly improves air/fuel flow. Fully swirl polished. Nitriding reduces guide friction and increases surface hardness.
  • Fel-Pro PREMIUM valve stem seals standard



JUST $1557!!! In stock!

Core return required (must be identical casting # on Duratec, call for info) or $200 core fee must be collected.

08+ vehicles may require retrofit to early style camshafts/sensors/wiring. Will bolt on VCT equipped cars but would obviously need same retrofit and possible tune.

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