Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

compression, timing, spark plugs

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Old Feb 23, 2010 | 08:18 AM
  #21  
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kalli
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From: Cork, Ireland
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ahhaaaa! thx for that piece of info. I'll check when home. it really seems like mine doesn't have any kind of advance adjustment. I bought a used crane this week for 50$ which never worked for the seller. I just hope they did a stuipid mistake like running 8V to it or so :-) and if I wasted my money I can use a few bits as spare maybe
Old Feb 23, 2010 | 12:49 PM
  #22  
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eZ
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Yes I was speaking of cam duration at .05 Ive read that on more than a few occassions but the only one I can remember is off the Barry Grant site
Old Feb 23, 2010 | 04:28 PM
  #23  
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urban_cowboy
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Wow. That is quite a bit of duration...282@.05.
Old Feb 23, 2010 | 06:04 PM
  #24  
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eZ
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yeah Im a dork...im at 240 at .05
Old Feb 23, 2010 | 09:45 PM
  #25  
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urban_cowboy
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There you go. I believe that a little better. 282 was probably the advertised duration wasn't it?

Either way, 14-16* initial timing falls in line with what you have. The problem is with that much initial and a fixed curve dizzy, you are probably going to be at 38-40* total timing which may be too much to not have detonation at WOT. If you are not going to change out your dizzy and do not have the Mallory Y version, I would set the total timing at what your engine likes without detonation and the initial timing will be what it is. Does that make sense?
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