Wossner FORD 2.0 Focus ST250 ecoboost Turbo Forged Pistons & PEC Rods Set

Compression Ratio:9.3:1

Bore Sizes Available: 87.5mm, 88mm

You are buying a full set of 4 Pistons with Rings, Gudgeon pins & Circlips & H-beam Rods.

Wossner pistons:

• 4x Wossner forged pistons
• 4x Wossner piston rings sets
• 4x Wossner gudgeon pins
• 4x Wossner circlips sets
• 1x Wossner sticker
• 1x PEC piston installation guideline sheet

PEC connecting rods:

• 4x PEC forged steel connecting rods – H-beam
• 8x ARP 2000 series
• 1x ARP fastener assembly lubricant
• 1x PEC connecting rod installation guideline sheet

Wssner are regarded by Europes leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duresss of competition life. Wssner pistons feature a uniquePTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent hot spots on piston crowns. Price includes all piston rings and gudgeon pins.

PEC rods are designed to withstand roughly 225hp per cylinder (typically 900hp onmost 4cyl engines) and on the ARP 2000 series 3/8 bolts normallyprovided & have an8,500RPM safe operating limit (engine specific).

In some cases, we recommend using the ARP custom age bolts available from us. This increases the hp threshold to 250hp per cylinder and raises the RPM limit to 9,000 however as every engine is different, these numbers are not guaranteed for every configuration.

Prolonged high RPM’s for drifting, or sudden bursts of torque for drag racing (as two examples) will warrant the use of the custom age bolts to help retain the clamping force between the big end cap and the connecting rod.

If in doubt, please contact us for advice.

H-Beam and I-Beam section connecting rods are forged from AISI 4340 (En24) steel. Heat treated to HRC 35-38 and then shot peened for a higher fatigue strength. Small ends are bushed for a fully floating pin and big ends are fitted with high quality ARP fasteners with different specification bolts available depending on the level of performance required.

Manufactured from forgings originally produced in Sweden, PEC connecting rods have offered engine builders and tuners a cost efficient and yet high performing solution to a wide variety engine building problems.