PAC racing valve springs began its existence with cutting edge technology in material advancements and processing advancements that have allowed our valve springs to excel in all forms of racing. From PAC proprietary alloy PACALLOY, to PAC-enhanced processing to our continued development of further materials and processing, PAC racing springs will give you the competitive edge you need in the demanding stresses of racing.
PAC racing valve springs gives an attention to detail in spring manufacturing which is highly uncommon throughout standard spring making processing. From Design, manufacturing, customer satisfaction, no detail is left un-noticed. Whether you need springs to endure motorcycle engines at 15.000 RPM, your 10.000 RPM cup engine, or springs for your racing lawn mower, PAC racing valve springs has the technical edge and experience to propel you to the finish line.
CAT CAMS valve spring retainers are designed to provide a total valve spring setup solution in conjunction with our range of valve springs, manufactured by «PAC Racing Springs». During the spring retainer design, maximum focus goes to reliability while reducing the valve train mass.
Depending on application either hardened steel or a hard anodised aluminium alloy is used.
For ‘conventional’ applications where pricing is important , Cat Cams offers a vast range of high quality chilled cast iron camshafts. Typical applications are fast road and moderate competition camshafts. Development of a casting requires high production volumes, so these are only available for a limited number of big volume applications.
When castings are not (yet) available, the steel billet production line at Cat Cams brings the answer: the development cycle for the BMW Mini R56 Turbo engine was about 6 weeks from arrival of the sample parts. The work included design and manufacturing of steel billet camshafts (see picture below), cam profile design and development of a dual valve spring kit.
For more demanding applications such as dedicated competition projects, the steel billet production line gets in action as well. Beside casting availability, there are some other reasons to prefer steel billet camshafts: gun drilling a 20mm hole over a length of 400mm saves about 1kg. Thanks to this reduction, the weight of Cat Cams steel billets rivals assembled hollow lightweight camshafts. However, the advantage of these ‘single piece’ steel billets is an important improvement in stiffness and strength, allowing higher acceleration cam profiles.