Two technical questions: oil pump timing importance/crank sensor gap?

[CorrupTTalon]

it doesnt seem like its all that important for the oil pump gear to be at its mark as its just spinning around and pumping oil as it spins? is it just a matter of balancing out the inertia of the spinning gears? like the balance shafts? if they are off they vibrate more in stead of eliminating it? i ask because for some reason my crank pully found some extra play when i tightened it down last and pushed into my timing cover which wore the front of my oil pump gear so i have no idea where the mark is.....

also on the crank sensor: does the metal plate touch the sensor as it spins by? or is there a certain gap that the sensor and plate need to be at? also i noticed a gap on the sensor itself.

 

[talontd92tsi]

If you have balance shafts in your motor it is important as one of them is attached to the oil pump

 

[Joses95TSI]

it doesnt seem like its all that important for the oil pump gear to be at its mark as its just spinning around and pumping oil as it spins? is it just a matter of balancing out the inertia of the spinning gears? like the balance shafts? if they are off they vibrate more in stead of eliminating it? i ask because for some reason my crank pully found some extra play when i tightened it down last and pushed into my timing cover which wore the front of my oil pump gear so i have no idea where the mark is.....

also on the crank sensor: does the metal plate touch the sensor as it spins by? or is there a certain gap that the sensor and plate need to be at? also i noticed a gap on the sensor itself.

i also notice the gap on my crank sensor now is that soppust to be like that or like this guy said is their a gap number for it.

 

[theonenomad]

Sounds like your crank pully is seperated.It has a steel center and then a ring of rubber,then the pully ring is over that.I took a hammer and knocked the center right out of mine.AKA harmonic balancer.Get a new one!!!!

 

[Defiant]

The oil pump has to be timed if you have the rear balance shaft in the motor. The balance shaft is run off the oil pump, and even though the mark is on, the shaft can still be 180° out-of-phase, which will manifest itself as a fairly serious vibration around 3500 RPM.

 

[luvmygst]

Sounds like crankwalk to me. That is the only thing that would let the crankshaft move backwards. When the triggerplate is bolted behind the crank/timing pully it should be pretty much centered in the crank sensor. Just a thought I would check crank endplay.

 

[hatch]

Bringing this one back for some clarification. So if the balance shafts are removed then the pump doesn't have to be in perfect time? I'm building my motor right now and have both balance shafts removed, when I set the timing the oil pump was a little off, should it be a problem?

 

[oldman]

So if the balance shafts are removed then the pump doesn't have to be in perfect time?

Correct.