Stroking

There are about a hundred ways to make a stroker - the piston doesn't necessarily have to go "up" and "down" further (above the previous TDC and below the previous BDC) - it can be split many different ways. I find it most helpful to think of these stroker motors when speaking of how it affects the power stroke. A stroker motor will almost never add length to just the power stroke as in the example of cutting into the head by 2 mm's, though it could be made that way. I have trouble with sayings like "the piston will go faster" because I tend to think in terms of piston speed, piston velocity and piston acceleration - either of these things could change or remain the same with a stroker build. Some of these topics are covered here . Though they're a little old, they're still very true. Whether the motor gets hotter or not is a function of design parameters including the compression ratio which has a large effect on operating temperature. Without any of that information it is impossible to say whether or not there will be additional heat. In some circumstances the engine could be designed to be cooler - going completely against common thinking. An advance key - a device that advances the ignition may not be a good idea on a stroker motor because by its nature the stroke increase has already increased piston dwell at TDC. Adding to that may put the ignition into the danger zone. The longer the stroke increase the more this is true. It may be that because of the stroke increase a timing retard is in order simply because the nature of the modification has put too much static advance and corresponding advance curve built into the "black box" into the ignition system.