Maximum Timing For Stock Engine

[arinkuddy]

mm3 is cubic millimeters of fuel. Its the volume of fuel injected. If you modify the duration table or get bigger injectors this number really isn't accurate anymore, but that doesn't really matter. You can sorta think of it as % throttle, where 0mm3 -> 0%throttle and 150mm3 -> 100%throttle. Like said before the ecm just uses it as a reference for how much fuel is getting injected.



Just for reference: 150mm3 = 0.15cc =0.03teaspoons

[EverydayDiesel]

Thanks to everyone that responded.

I guess the next steps for me are to smooth out some of the tables, log some data, and listen for rattle.

I will start by smoothing
1. main timing, base
2. fuel pressure, base
3. timing calculator table

Any other tables I should smooth out before doing some data logging?

[mpdtune]

If your using stock pulse and you begin to add timing, smoke will be a byproduct of too much timing. Remember that pilot timing is based off of main timing. So as you increase main, pilot also increases.

As for top end fueling timing, with a re-entrant piston, 50% BTDC is ok with stock pulse...start going over stock pulse, you'll need to advance your split.

If you have access to a load cell dyno..that would be your best friend.

With diesels, no knock sensors, so you have 3-potential ways to find max timing...

1. Dyno
2. Track
3. Calculated timing

4. Broken pieces of engine.

[EverydayDiesel]

Thanks everyone, I have learned alot since I created this thread originally and I got the starlite book. I still have a ton to learn.


Does this timing calculator still apply when working with a single event tune?