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<blockquote data-quote="kennethfong" data-source="post: 118872" data-attributes="member: 4371"><p>leaning out will save more fuel, but running a hotter engine...</p><p>riching out will lose more fuel, but cools down your engine...</p><p></p><p>run rich if ur setting is the drag type which means shifting gears only when u reach the max hp on ur rpm....</p><p></p><p>however, the aforementioned tuning is not exhaustive, try 2 get a timing light n check ur current ignition timing compare with yer original stock timing btdc (before top dead centre), i used to have one customized extractor which allows me to advance my ignition timing into 20+ degrees without pinging during idle, but a big pinging during low rpm acceleration though just a lil while then would feel smoooooth all the way till 7k rpm.....</p><p></p><p>it's an easy job just get a spanner (forget the size), and loosen two bolts above the spark distributor, then rotate towards u for advance or vice versa for retarding, u could hear the engine sounds more agressive or otherwise if u did it correctly when the engine is running idle......after that recheck the timing with yer timing gun n record it for future tuning purposes.....</p><p></p><p>thus conclusively, tune till the max just before pinging for draggers......</p></blockquote><p></p>
[QUOTE="kennethfong, post: 118872, member: 4371"] leaning out will save more fuel, but running a hotter engine... riching out will lose more fuel, but cools down your engine... run rich if ur setting is the drag type which means shifting gears only when u reach the max hp on ur rpm.... however, the aforementioned tuning is not exhaustive, try 2 get a timing light n check ur current ignition timing compare with yer original stock timing btdc (before top dead centre), i used to have one customized extractor which allows me to advance my ignition timing into 20+ degrees without pinging during idle, but a big pinging during low rpm acceleration though just a lil while then would feel smoooooth all the way till 7k rpm..... it's an easy job just get a spanner (forget the size), and loosen two bolts above the spark distributor, then rotate towards u for advance or vice versa for retarding, u could hear the engine sounds more agressive or otherwise if u did it correctly when the engine is running idle......after that recheck the timing with yer timing gun n record it for future tuning purposes..... thus conclusively, tune till the max just before pinging for draggers...... [/QUOTE]
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