Date registered: Feb 2010
Vehicle: 1972 280SEL daily driver. 904 Dark Blue with cognac interior. euro 4.5 engine
Location: Williamsburg, VA
Mentioned: 3 Post(s)
Quoted: 34 Post(s)
Time for a quick update now that I can get back into my Benzworld account.
Filled up the tank for the first time since the conversion. Only averaged 13.0 mpg. I know, that sounds not so good, but consider; No trip was over 6 miles, there was a LOT of sitting and idling in the driveway as I waited for the car to warm up so I could do some tuning, The car still does not have a 100% tune, the majority of trips involved a lot of full throttle accelerations (both for tuning/data logging AND because it is a whole lot of fun now). All in all, it is about where it was prior to converting, but it has no place to go but up.
Car now idles at a rock solid 795 rpm (ok, it hunts +/- 5 rpm) when warm. I have the engine VE map pretty solid now so my AFR is pretty solid.
I'm taking time off of tuning VE to tweak the timing a little. I have no advance map so I'm trying to sneak up on a good curve. Keep in mind this is a 8.8:1 euro, not a 8:1 USA engine so results may vary.
I currently have cranking advance at 7 BTDC. Idle is at 10-12 BTDC. Full throttle above 3000 rpm is 26-30 BTDC and cruise at 3000 rpm+ is about 40 BTDC. Right now, I think I may have timing coming in a bit too fast as there is a very slight ping at the 1500-2000 rpm and heavy accel so I'm backing that area off a little.