Been doing a lot of interet reading on safe timing numbers but most I am reading is all dealing rib upper rpm wot timing, my factory 05 table has a lot of negative numbers down low, what's it safe to bring these up to?
Been doing a lot of interet reading on safe timing numbers but most I am reading is all dealing rib upper rpm wot timing, my factory 05 table has a lot of negative numbers down low, what's it safe to bring these up to?
15 C7Z M7
I'll Pm you.
05 5.9l cummins manual 6speed pulseadd.hptOriginally Posted by Orange Stroker
15 C7Z M7
Timing is relative to pulse and rpm. There is no defacto number to run or not run. You should look at a timing calculator to best determine max timing with a given pulse and rpm
This guy knows stuff.
Been using the efive calc
15 C7Z M7
If you are using EFI Live calc, I've found you usually makes peak power 55-60% BTDC at WOT and 35-40% in the cruising ranges for best fuel mileage.
I'm going to try a couple of things from this paper to see what effect I can get mpg wise. It's an interesting read
http://www.tytlabs.com/english/revie...3_009hotta.pdf
Did you use that calculator when you built the tune you posted?
Yes and no, I have a habit of changing duration and not always re-inputing the data in the calc, and I just learned that I was doing a couple of inputs backwards in the calculator
15 C7Z M7
Ok..because the timing split that is shown in that tune is not what most would consider ideal..its borderline unsafe....
Not enough timing is just as dangerous as too much...its a balance between, spool, smoke, power and parts life.
Thanks for the paper. I found it a good read.
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