| Author | Message | ||
     p (Pfb) New Member Username: Pfb Post Number: 1 Registered: 08-2003 |
Right now I run regular with zero pinging. Any idea what the optimium advance is for altitude on a '94 3.9? What about if I am willing to go to premium fuel? | ||
| Geoff 93 RRC (Geoff) Member Username: Geoff Post Number: 91 Registered: 11-2002 |
The LR manual says 5 +-1 degrees BTDC for the '93 3.9L Rangie. Probably same for Disco 3.9L. My Mercruiser manual (boat - conservative) says advance 2 degrees for every 5000 feet. Advancing the timing is tough on the bearings (I've done it on mine trust me) normally, but you could probably go a couple of degrees without problem. | ||
| p (Pfb) New Member Username: Pfb Post Number: 7 Registered: 08-2003 |
Any other thoughts? Doesn't anybody advance their timing at altitude? And do it themselves? |
