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advance timing

This is a discussion on advance timing within the Yamaha YFZ350 Banshee (1987-Present) forums, part of the Performance /Technical category; I was wondering what was the difference between advancing the timing +4 or +7? Dose the +7 just have more top end or do you ...


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Old 10-22-2002, 09:54 PM   #1
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I was wondering what was the difference between advancing the timing +4 or +7? Dose the +7 just have more top end or do you have to change something or what?
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Old 10-22-2002, 10:22 PM   #2
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You should only advance the timing to 7 degrees if you run your motor for short periods of time, like in drag racing. It will also run a lot hotter and actually start to hurt performance at 7 degrees. Use +4 for normal use.
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Old 10-23-2002, 03:31 AM   #3
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advancing your timing more than +4 is not recommened unless you have a "built" banshee. And if you have a "built" banshee than your builder will recommend the timing advance for that particular motor.

Dan at Alloyspecialties CNC's adjustable timing plates that go up to +15 and said something I found pretty funny but pretty true. He said he gets asked by guys "what should I set my timing at". And his reply was "If you have to ask this question then you shouldnt be adjusting the timing at all". :cool:


Stay away from +7 unless your drag racing serioulsy, not just drag racing your buddies once in a while.

+4 is good enuf for most piped banshees any thing more can be catastrophic.

BTW I ride a modded banshee setup for MX and agg trail riding, and my engine builder recommened my timing set to only +2. Like screamin' said, more timing advance will produce more heat, and could cause detonation. More timing advance will make for a peakier powercurve, and +2 advance will produce nearly the same amount of HP as a +4 advance without the dreaded heat buildup and detonation troubles along with making the powerband more ridable for everyday trail riding and MX racing.
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Old 10-23-2002, 11:06 AM   #4
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you shouldnt run anything past +5 or 6 unless you are runnging alky. The alky needs more timing. Your timing alo depends on your porting. Most drag guys running alky run around +10, however if your bike is set up for it you could run +15 without a problem.
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