(I have started this is a co-operative effort but I only know for certain about my 2005 car, others can contribute their knowledge of other types of speedo)
This a DIY version of the Quaife Type 9 top cover that I first saw on Guy Lowe's gearbox. It makes it much easier to check and top up the gearbox oil level.
A little while ago I redrafted the Caterham K Series EU3 Wiring Diagram. Recently I have been involved with helping a number of people with EU2 engine wiring issues and have discovered several problems with the published K Series EU2 Wiring Diagram, some of which were common to the work I did on the EU3 loom.
The answer to most electrical problems is to start by checking the earths in the car. The battery is usually connected to the engine by an earthing strap and the engine is separately connected to the car chassis by a further strap.
In the begining the world was created and God saw that it was good. Then he invented motorsports and it was OK.
The subject of Aluminium and its Alloys is quite complex and a correctly designed chassis with the correct alloy selection and proven welds may well be feasible but I am convinced that this concept would be beyond the scope of the average amateur in a "shed " environment.
Do I need a Dry Sump for road use only ?
Generally No. A dry sump system is of value mainly if you are expecting to experience very high cornering, braking or acceleration forces such as are encountered during sprints/hillclimbs, racing or track days.
What is the significance of reducing rotating mass versus stationary mass, when lightening your Se7en?
Newton's Second Law of Motion states: "Acceleration is proportional to force and inversely proportional to mass."
Bushes are an interesting subject.
In the first place all bushes must introduce compliance into the suspension and this is likely to introduce certain non-linearities which could cause problems or could be used to remove design w
When disconnecting the battery before commencing work on the car, you should disconnect the negative, black lead first, here's why: