Frequently Asked Questions

All Camshaft Manufacturers produce Performance Camshafts either by Chilled Casting or Machined Billets. At STK Performance we are no different , we only use the best and most durable materials for Performance Camshaft use. The main differences are the Durations ( Degree’s ) , lifts , Lobe Centres etc. We all have our own ideas around what we prefer for certain applications. That should not be misconstrued over quality or power ranges between the different manufacturers. STK Performance are the only Performance Camshafts in South Africa that offer a 12 Month Warranty !

First consider where the vehicle will be used and for which purpose. We all know the claims of 10-15KW with bigger camshaft durations etc. But have you ever considered where this power increase is achieved in the rev range ? Mostly at high , 6500-7500RPM with a massive torque loss at 2500-3500RPM. There is always a Trade Off when going too big with your camshaft choice. So choose your Camshaft wisely. If you use the vehicle everyday there is no use for the above scenario. In rush hour traffic twice daily will be seriously wasteful and painful to drive. But on the Track it’s completely different…….. For Street Performance Camshafts It’s all about drivability and useable power !

“Don’t over-cam your engine , be conservative for the street and fit a milder camshaft “

It is highly recommended to replace Hydraulic lifters with new ones when fitting a New Camshaft. It not only is a condition of the Warranty but the bedding process of any camshaft is of the utmost importance.

This will affect the Warranty !

When using a high lift , high duration camshaft…. the factory valve springs are generally not strong enough. To handle the higher rpm as well as the additional valve spring travel associated with a performance camshaft. The side effects of using the incorrect valve spring type are catastrophic.The whole of the valve train including the camshaft lobes and generally the valve spring reaches coil bind way before peak lift. Standard Valve Springs are too weak to prevent valve float in most situations. Valve Spring Heights , Valve Spring Travel & Coil Bind clearances are crucial even when using standard factory valve springs. The uprated valve spring ensures that coil bind is avoided.This prevents valve float providing they are installed correctly and by a professional. This is not a DIY Product !

There is a misconception out there regarding the use of uprated Valve Springs or Rev Kits. Most believe when fitting them you can instantly rev to 9000rpm regardless of the camshaft size.This is a fantasy and all Rev Kits/ Valve Spring Kits should be selected based on Lift , Duration and RPM ranges.

1. Billet Camshaft is turned from round bar and Nitride Hardened after Profiling.

2. Blank Camshaft is Cast using the Chilled Cast method , Hardening is not required after Profiling.

3. Re-Profiled Camshafts are generally a standard production camshaft. This is profiled to different duration. With this method the Camshafts base circle is reduced. In most cases valve lengths need to be altered to compensate for base circle diameter loss.