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The forces involved in compression ignition of diesel fuel in a heavy-duty engine are very considerable and these gases attempt to migrate passed the pistons rings sending part-burnt fuel into the crankcase and sump. In addition to this headache – which can be greatly reduced with gapless rings in the 2nd grove – there is…

Real vehicle efficiency upgrades can be achieved from tuning or exhaust improvements but many in recent years have focused on aftertreatment to reduce emissions. With our Opti Combustion pistons, you boost power, torque, fuel economy and greatly cut emissions and air pollution by solving the inefficiency with which diesel, petrol, and natural gas engines work.…

What are gapless piston rings and how do you get them onto the piston if there is no gap? Well they are 2 rings in one where the lower part also has a gap and is precision-lapped and honed into the upper part. This design is typically on the 2nd ring grove above the oil…