Har inte kollat detta ännu (borde jag klart ha gjort) men om Ford följer sina gamla spår så skiljer slaget mellan 1,6 1,8 och 2,0 liter men det är samma borrning, dvs blocken är olika höga

Jag kollar

Utveckla gärna dina tankegångar men utgå ifrån ovanstående

ZETEC ENGINE SPECS
1.6L 1596cc 4-Cylinder 76.0 88.0mm Bore Stroke, Compression Ratio 10.3.1, Maximum Power 74kW/6000 RPM, Maximum Torque 145nm/4000 RPM
1.8L 1796cc 4-Cylinder 80.6 88.0mm Bore Stroke, Compression Ratio 10.0.1, Maximum Power 85kW/5500 RPM, Maximum Torque 160nm/4400 RPM
2.0L 1966cc 4-Cylinder 84.8 88.0mm Bore Stroke, Compression Ratio 10.0.1, Maximum Power 96kW/5500 RPM, Maximum Torque 178nm/4500 RPM
All (3); 16 Valve, Material of Cylinder Head/Block Aluminum, Head Cast Block Valve Train Drive System DOHC Toothed Belt (Micro-V Belt), Engine Management
System EEC/SEFI, Idle Speed 700 +/- 30 RPM, Maximum 7100 RPM, Emission EU Level 4 Fuel Economy Vehicle & Fuel Dependent 5-Speed Manual Gear
Box (Automatic Transmission Gear Box optional)

Heads and cams
Like many four-valve modern heads, the alloy Zetec unit is pretty good straight out of the box. It has good tumble which allows it to produce a healthy torque curve but that is not to say that gains can't be made. Careful porting can provide worthwhile flow improvements and there's room for bigger valves if you're after more than 200bhp. A standard head (on a 2.0) with side draughts or throttle bodies plus mapped ignition will make between 160-170bhp. Port the head and add some 285° cams for 200bhp. With big valves and careful gas flowing you can squeeze 220bhp. You'll need vernier cam pulleys to get the best out of even standard cams.

Change the camshafts and fit vernier pulleys
March 2004: The standard 2.0l cams are good for around 165BHP running on after-market fuel injection. I'm sponsored by Piper Cams,, and they've provided a pair of BP270BH's which work well with standard cylinder heads and pistons. With these fast road cams, there is no need for additional piston cut outs, and they're good for an extra 16 BHP over the standard cams.

This guide is intended to assist you with the task of replacing camshafts on the Zetec engine. I take no reponsibility for any problems you may have when following the guide. I've double checked everything here, but like everything on the world wide web, articles are prone to error, though hopefully there are none below.

You can change the cams when the engine is warm if you wish, but for your own safety I'd recommend that the procedure is followed on a stone cold engine. Otherwise you may burn yourself on hot oil or other mechanical parts.

Timing specifications for the Piper BP270BH Fast Road cams
Power band 1800-6800 RPM
Power increase 16 BHP
Inlet Exhaust
Duration 264° 260°
Valve lift 10.03mm 9.32mm
Timing 22-62 60-20
Full lift 110° 110°

Enligt Roadsportreglementet gäller
elektronisk mapbar tändning, förgasare-