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#1
05-04-2002, 11:56 PM
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bore and stroke
ABOUT how much of a horsepower gain can I get from bore and stroking? I have a 145HP, 147ft-lb F22B1 (VTEC)?
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97 Accord EX Coupe (H22A) _____________________________ 18" Focal SD5 225/40/18 Kuhmo Ecsta Supra (712) AEM Cold Air Intake Walbro 255lph Intank Fuel Pump HP Racing Exhaust 2.25 Custom Piping Spoon Radiator Cap Katzkin two-tone Leather 3 JL Audio 10W3s Kenwood DPX-4020 Double Din 
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#2
05-05-2002, 01:35 AM
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it depends on what you do. most people change the bore for more displacement. the ratio is changed to optimise effectiveness according to application. 1.75 is the best ratio for high reving engines, less than that is good for turbo or supercharging like 1.6 or so. too low a ratio and there will be lots of side wall effect from the pistons rubbing on the cylinder walls instead of going straight up and down. you need to read up on this. stroking is very expensive. it is much cheaper to buy a different engine.
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