About the tool: Important Notes for using The Compact Double.
The tool shown in use is the “Compact Double” valve spring compressor. Designed to be compact, it easily occupies the space where the valve cover normally fits; and double because it efficiently allows two valves to be compressed at the same time. In this video Brian Stolpa replaces 4 valve seals in 6 minutes with a pair of the N63 Valve Spring Tools.
This repair is not for novices, it is complicated and mistakes can be catastrophic. However, anyone competent in the assembly of 4 cam 4 valve per cylinder engines should be capable of this repair.
Compact Double is NOT a one size fits all compressor tool, this set is specific to the N62 engine family (although tool sets for other engines may be added at a later date).
This tool requires camshaft removal, consequently a camshaft timing tool set is required. (Camshaft tools are available from various sources for approximately $200.00 and up depending on quality and complexity).
The valvetronic assemblies can be removed and reinstalled in one piece negating the need for special tools. All specifics regarding this are included with the instructions. The tool allows most of the work to be done with a 1/4” drive air or electric tool.
The most time consuming part of the seal replacement is installing the keepers. The foot design gives virtually unlimited access to the keepers and also provides a stop to help catch wayward keepers.
Time is money and I believe this tool set will allow the seal replacement to be done faster with fewer headaches, less energy expended and for less money than any other tool available.
Clear instructions are provided. These instructions are to be used with the BMW labor operation 1133050. If you have any further questions, comments or suggestions, please contact me by email.