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Old Feb 23, 2007 | 07:43 AM
  #1  
95GSRGuy's Avatar
95GSRGuy
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Kittenpurr Banshee scream
 
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From: Santa Barbara
Default Advanced Timing?

The ignition spec on the Integra is 16 degrees BTDC +/- 2 degrees. Typically, though, it's accepted that advancing the timing on a naturally aspirated motor allows the motor to make more power. I'm not sure, but I believe the reason is because the combustion reaches pressure closer to TDC, which means it can act on the piston longer.

My question is, would advancing the timing to the factory max of 18 degrees BTDC yield any noticable benefit? I know that this usually requires a higher octane gas, but the GS-R does have a knock sensor which will retard timing if you push it too far.

Any thoughts would be greatly appreciated.
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Old Feb 23, 2007 | 07:45 AM
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Rachel Bilson
 
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Not much of a difference...but will increase your chance of damaging Engine

Unless you upgrade Cams
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Old Feb 23, 2007 | 07:59 AM
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more than just type-r cams too huh F22?
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Old Feb 23, 2007 | 08:34 AM
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Rachel Bilson
 
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Originally Posted by Topend
more than just type-r cams too huh F22?

Are you being sarcastic?
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Old Feb 23, 2007 | 11:37 AM
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advancing the timing you'll notice a bit of a difference in the higher rpm's. nothing drastic. it's easy to do so try it and see if you like it.

besides, you should always be runnng premium fuel anyway.
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Old Feb 23, 2007 | 01:33 PM
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I advance my timing to 18' and didn't notice a thing, so i put it back to 16'.
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Old Feb 26, 2007 | 08:00 AM
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I've never seen a dyno chart on this, so most accounts of improvements are possibly anecdotal, like more intake noise making the car faster. But I would think that running the factory max of 18 degrees is safe, since it's still in spec. Just be sure to use a timing light. Also be sure to keep premium in the tank, because every time premium goes over $3/gal, it's tempting to switch to mid-grade.

Does anyone seriously think there's danger of engine damage as long as it's within spec? Like maybe going up a long grade with a load and the a/c on? Just curious what the thinking is out there, because this is something that anyone can do at low or zero cost.
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