High Performance Spare Parts

ARP Toyota Supra 2JZGE / GTE 3.0L inline 6 CA 625+ Head Stud Kit # 203-4301

Regular price Dhs. 0.00 Dhs. 1,600.00 Sale

: In stock

: Auto Parts

Planning on cranking 45psi and above? Then you will need CA625 studs. These are the ultimate in head torque and are custom...

Planning on cranking 45psi and above? Then you will need CA625 studs. These are the ultimate in head torque and are custom made for Paradise Racing.

CA625 differs from ARP2000 in that it is a vacuum melted alloyed steel with sufficient chromium and carbon to achieve high hardness (but below the level of stainless steel).

CA625 is air-cooled from the hardening temperature in a way that does not require an oil quench to achieve the full hardness and is tempered to assure full conversion to martensite between 1025°F and 1075˚F.

CA625 is a proprietary material capable of achieving strengths of 220,000/230,000 or 260,000/270,000 psi as may be required.

Both CA625 and ARP2000 sheets of steel are modified bcc (martensite) at room temperature.

CA625 has the same advantage as ARP2000 in that high strength is obtained at a high tempering temperature.

This alloy is easily contaminated and requires special handling.

These are 1/2inch size and require modifications to your head & block.

Your head will have to be drilled and your block will have to be drill and tapped for 1/2inch threads.  

We have used these head studs to support 60psi.

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