@.0 Zetec C.R.

[gjslutz]

What is the max C.R. anyone is running on their 2.0 ZETEC?

Also what is the max RPM on a stock botom with the oil pump up grade.

 

I'm looking for more HP & RPM

 

Gary

[yellowss7]

Be careful what you wish for. My Rover K series C/R is 12:4:1 and Sunoco 100 octane GT race fuel cost over $8.00 a gallon. :cuss: :ack: Tom

[Mike Rohaley]

Gary,

In reference to your qoute "I'm looking for more HP & RPM"

 

Probably the most important thing you will want to do to meet your goal will be to replace the stock long-runner plastic intake with something like an individual throttle body setup. The reason is that the stock unit which is very long promotes power down low while a short-runner promotes power in the upper end of the RPM range. The stock Zetec runs out of steam at around 6500 RPM because of that. Check out Porsche's VarioRam system or the SVT Zetec intake for a great example of what can be done with this single change. The Porsche and Ford system utilize a long runner for the lower part of the range and then transfers to the short runners in the upper end.

 

Without this snazzy technology we must pick the components that are biased toward the type of engine we are building (a high end screamer or low end monster). A great book that covers much of this information specific to the Zetec is called High Performance Ford Focus Builders Handbook. I realize that I may very well be telling you something that you already know but based only on the above post I would hate to see you have the head cut down only to find that the higher compression doesn't translate into the engine that you had in mind.

[stevet]

:iagree:

 

 

steve

[S1Steve]

There is much more to it than CR,if you want more HP. I spin my Zetec up to 7200 rpm on a stock block.:crazy:

 

Steve Novelli

[JBH]

If you believe Caterham USA, the specs for my Zetec engine are:

Displacement: 1988cc

# of Cylinders: 4 in-line

Bore: 84.80mm

Stroke: 88.00mm

Compression ratio: 10.5:1

Valves: 16

Camshaft: DOHC, performance billet camshafts

Ignition: Fully PC Programmable Direct Fire

Firing Order: 1-3-4-2

Fuel: Premium Unleaded 92 Octane

Fuel System: Throttle Body Fuel Injection

Maximum RPM: 7,500rpm

Maximum power: 202bhp @ 6,800rpm

Maximum torque: 165lbs/ft @ 5,000rpm

[gjslutz]

I just pulled the plug and will be having Tom @ Focus Power do the top end for me.

 

Presently have TB's and adj. cam gears on a stock engine. It is run by an Emerald system.

 

The plan is to change the oil pump, P & P the head, larger valves, add stage 3 cams.