Ok, so I was still having some pinging problems with my 3.0 bar FPR and other mods. I borrowed a timing light from a friend, but gave up on that venture because my eyes aren't good enough to see the darn numbers/marks on the flywheel. Anyhow in the process, I rotated the distributor before marking it, and put it back as well as I could remember. Found out today though, that I must have advanced the timing, because it was pinging like crazy at any boost over 10 psi. (about 60F out today) And it was already at 17 BTDC.

So, just for fun today, I retarded it a little bit. Hard to say how much, by the marks I made from where it was, maybe five degrees of dist. rotation, if that. WOW!! What a difference! All of a sudden, the pinging was GONE, and now I am getting the highest boost ever, 16-17 psi, and it's SOLID. Amazing what such a tiny turn of the distributor does, eh?

I'll admit though, it feels much more sluggish around town, well anywhere below about 10 psi boost, really. Still damn fast, but it doesn't feel light footed like it did when the timing was too advanced (man that felt lightning quick around town).


So, looks like the moral is, the A.I.D. is calling my name... As I understand it, it will do exactly what I need - allow me to set higher advance for great low end and low boost conditions, but give the extra retard at higher boost levels to keep that boost high and steady.

May just have to order one up tomorrow! I'll see 20 psi yet!


Aaron Gilbert
1987 9000T 255k miles

• Adventures in timing, Man I need that A.I.D. !!, Aaron Gilbert, Thu, 19 Apr 2001 22:48:19 <-- Viewing This Message
  • Re: Adventures in timing, Man I need that A.I.D. !!, SpGgirl, Fri, 20 Apr 2001 17:02:46
  • Bit the bullet, ordered an A.I.D.! Will be in mid next week! n/m, Aaron Gilbert, Fri, 20 Apr 2001 15:27:14
    • BTW, one day soon i'm gonna do that side boat vent..>>, chrystobal, Fri, 20 Apr 2001 16:11:17
      • Try a NACA duct in the same location. Get something of a ram, Talladega9oo, Fri, 20 Apr 2001 22:19:28
    • $200 or so....right? where's the install DIY page for it?? TIA.., chrystobal, Fri, 20 Apr 2001 16:09:22
      • Here you go, courtesy of SPG9, really a no-brainer install.., Aaron Gilbert, Fri, 20 Apr 2001 16:59:08
  • AID?? BTM?? Explain for the newbie, Todd A., Fri, 20 Apr 2001 12:25:55
    • Read Kevin K's excellent write up at Jeff C's site, link below., Aaron Gilbert, Fri, 20 Apr 2001 13:58:23
  • Distributor rotates at half engine speed, so..., SteveW, Fri, 20 Apr 2001 00:05:31
  • Thanks to Kevin K for the research leading to AID, question:, Aaron Gilbert, Thu, 19 Apr 2001 23:08:06
    • try AID timing from 18 to 20 max. n/m, Kevin K , Thu, 19 Apr 2001 23:39:28
      • Will do,l thanks! n/m, Aaron Gilbert, Fri, 20 Apr 2001 00:25:35

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