Creating ignition table from engine spec.
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Creating ignition table from engine spec.
I have a NA engine (m110) in a MB280 SL which I converted to a MS2 v3 system controlling both fuel and ignition.
I'm not really sure how I should interpret the timing spec for the engine.
Does the "vacuum off" be the same as at WOT?
Could someone please enlighten me how to interpret the given values.
Using the data below should it be something like this or ???
max load(WOT) : 1500rpm/28° ... 3000rpm/34° 4500rpm /36°-40°
..
min load (idling) 850rpm/ 12°BTDC ... 3000rpm/24°(10°less than at WOT due to retard idling)
Firing order & idling speed 1‑5‑3‑6‑2‑4; 750/850 r.p.m.
601. Ignition timing –starter speed 12°BTDC <----------- This must be no load and idling
601a. (Vac. off)‑ 4500 r.p.m 34°BTDC <----------- Is this at max load (WOT)
606. Centrif. adv. at 1500 r.p.m. 28° <----------- min or max load ?
607. Centrif. adv. at 3000 r.p.m. 34° <----------- min or max load ?
608. Vacuum retard idling 10° ± 2° <----------- difference between min /max load ?
609. Vacuum advance at 4500 10° ± 2° (total 36°/40°) <----------- Is this at max load (WOT)?
Re: Creating ignition table from engine spec.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Re: Creating ignition table from engine spec.
At WOT-> rich mix ->quick burn of fuel, less advance than at lower load.
At cruize -> lean mix -> slower burn -> more advance.
I've tried to keep the advance at WOT the same as the old settings, 28°/1500 rpm, 34°/3000 rpm and 36°/4500 rpm.
Please correct me if I'm totally wrong here...
