Cog Choice – How to Choose the Right Gear Ratios
Gears are expensive and hard to get to, so we are all motivated to get the right transmission and final drive gear ratios in...
Reducing Rotating Mass – Lightweight Flywheels and Clutches Unleash More Power
Flywheels are necessary on piston engines because they preserve the momentum from one combustion stroke to the next. Early engines were so inefficient they...
Swapping a 2.5-liter Into an NC Chassis MX-5
There are lots of resources on the web about what it takes to perform a 2.5 swap in an NC chassis MX-5, and even...
HPDE46: How to Replace Shifter Bushings
In all candor, just going in and replacing the shifter bushings is too much work for the rewards it yields. Now that the job...
HPDE46 Replacing the Slave Cylinder Hose and Clutch Delay Valve
In stock form, the E46 BMW with a manual transmission has what’s called a clutch delay valve, which is essentially a step-down fitting in...
The Advantages of Cryogenic Processing
The biggest misconceptions about cryogenic processing are that it can change the size of parts and lead to brittle components. Those misconceptions can be...
Clutch Player – Installing a clutch on a Spec Miata engine the easy way
Depending on where you look, the two men credited with inventing the modern automotive clutch more than 120 years ago were two Frenchmen, Louis-Rene...
Building a Privateer GT3 Nissan 370Z
Back in 2018, Valkyrie Autosport’s 370Z wasn’t quite ready for ES. It was still stuck in E0, where it had demonstrated dominant pace on...
Bracing a Miata Differential
If you want to be competitive in Spec Miata, you need the 4.30:1 Torsen or Mazda Motorsports differential. Most racers simply find a factory...
Installing a Clutch and Light Flywheel in a 2.5-Swap MX-5
Installing a new clutch while you swap a tired old engine out of the car is a good idea. It’s one of those “while...
