Quote:
Originally Posted by Exage
What happens to your piston to head clearance with a longer rod? It depends on the amount of change in connecting rod length without changing the stroke, think about the crank at Top Dead Center and now increase the height of the piston. You run the risk of unfavourable (very high) compression ratios or possible piston to valve or even head collisions. Like I stated if they're going to change the rod to stroke ratio (longer connecting rods) which was 1.44:1 to +1.50:1 I speculate that the FB would need a de-stroke from 90mm to compensate for the longer connecting rod. The FB boxer engine can't really become that much wider after all (increase block deck height), unless changes in reducing the height of the cylinder head are made...
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there will be no valve clearance and we need to pray everyday that nothing happens to the timing like on a Z or any other interference engine.