prechambers mods?

Captain America

02-25-2015, 10:07 PM #114

(02-17-2015, 12:35 PM)OM616 I was lazy and did not re-clock the pump, so I am at the stops as well, (how many other people can say that lol). When I pull the engine down I will measure what the start of injection is at the stops. I am going to be installing 10mm elements in the pump and reworking the advance mechanism, so my new timing demands will be much different.

Timing is specific to every engine according to how worn it is, the quality of fuel, the quality of the injection, altitude etc... The only "speck" that is worth anything for any engine tuning is the static timing so that the engine will start. Once running a tuner will find what the engine wants, (runs best at). This will no doubt have the engineers screaming at their monitors that you must be with in X degrees regardless of all the variables that affect combustion.

If you are happy with how it runs now, then leave it. If you want to see if the engine will take a little more advance, then recenter the pump and find out. Even at the stops, we are way more advanced than the general public lol...

If the engine does not like the additional timing, it will get hard to start cold, be naily, and not run as well as the previous timing setting. In that case you have found the limit and go back to the previous timing setting where it ran the best.

Understood! I think I will re-clock to see how it likes it, because the "what if it can run better" will always bug me if I dont, lol.

Most noticeable about the pump being max advanced (whatever it is now, coming from 28 degrees) is that I noticed a bit of a powerband develop. Like over 3k it loves it, or that's where it makes most HP. Also on the highway 3k< it pulled like a mofo, but trans wouldn't hold the power so I never could see the most out of it. I still is hungry for more fuel for sure.

1982 300D Turbo ... 3,6xxlbs, No fan, No AC, Hood Stack, No ALDA, No rear bumper and stuffed front, A/W Intercooled, Injectors by Greezer and HUGE Pre-Chambers with help from OM616 & Simpler=Better, Fuel Cranked up, 60 Trim Compressor wheel, EGT, EMP, Boost 50" Rigid Radius bar on roof Aux tank for a total of 48 Gal Of Diesel! Odyssey PC-1750 Battery in trunk, 27"x8.5"/R14 Maxxis BigHorn Mud Terrains, In June '14 issue of Off Road Mag

AX15 Jeep Trans swap in progress....

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