Honda FRM Liners - Wrenchin'
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Both, early closed-deck and some late-model open-deck H-series engines feature FRM cylinder liners. Notice how there isn't a crosshatch pattern on their bores; FRM liners are as smooth as glass. Although strong, FRM-lined blocks aren't indestructible--no block is. When damaged, an FRM-lined cylinder can usually be bored up to 0.020 inch without disrupting the actual cylinder. But the process is far more complicated than a typical bore and hone, and special pistons and rings are required. The right way involves three graphite honing stones that, one by one, slowly cut away at the lining. The machinist begins with the roughest stone where larger cuts are made and makes his way to the smoothest of the three, which leaves the cylinder walls almost as smooth as glass. Unlike conventional, steel-lined cylinders, FRM-lined ones do not reveal a crosshatch pattern, which is partially what makes them look and feel so smooth. Once the cylinder liner's size is achieved, the machinist then applies silicone paste to the cylinder walls with specially made cotton pads. The pads spin inside the cylinder walls, warming up the paste until it adheres and turns the cylinder walls black. Finally, the cylinders are polished to a near mirror finish. View Related Article
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Honda CRV Research
Finding a fuel efficient automobile today is easier than ever. Check out the Honda CRV buyer's guide providing information on car specs, reviews and fuel economy. The 2010 CRV is equipped with a L4 engine, generating 180 horsepower, and it has comparable seating capacity. You may also be interested in the Honda Element and the Acura RL.
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