Busted Crank

Next up would be add an intercooler if possible, and add a shim to the automatic timer

I'm quite certain that the indirect injection non turbo engines run the most timing advance. Mechanical cummins engines run no advance mechanism. Have a look at this table, every degree of pump timing is two degree of crank rotation.

On my 3b it only has the outer springs, no inner springs. so probably the equivalent of shimming the outer springs here

Yep thats it, Its very sensitive, it was a fair bit of trial and error for me, you will get good at pulling the timing cover, i used a timing light after to get a ballpark of the changes but seat of the pants seemed to be best. the hx30 from a...

with the timer on your bench, remove the circlip, and slightly twist while pulling the two halves apart, dodge the flying shrapnel, then pull apart the other two timers you have from the other broken engines, stack all the shims together and...

So im talking about the early 3B inline pump, looks similar to a p-pump 4bt. now picture someone fitted a timing advance like a distributor to the timing gear that drives the injection pump.

Alright so heres the key to breaking 3b cranks, as I have done it twice now, once a tired motor, once a rebuilt motor. Both times, 14-18 psi of boost, intercooled, two different turbos Gt2560r, hx30. First had some timing added, second had...