Should I try & move the IP or not, what say you?

[Crankme69]

Here is where my timing ended up at after doing the TDC set & learn.

INJECTION PUMP SENSORS
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Actual injection pump timing: 28.78 Deg °
Cam reference missed: 0 Counts
Crank reference missed: 0 Counts
Fuel calibration: 120 Counts
Fuel rate: 7.5 mm³
Fuel rate - Cruise: 0 mm³
Fuel rate - Idle: 7.81 mm³
Fuel rate - Maximum transient: 42.5 mm³
Fuel rate - Throttle requested: 0 mm³
Injection pulse width: 1.66 ms
Injection timing - Measured: 6.9 Deg °
Injection timing - Desired: 6.9 Deg °
TDC offset: -0.18 Deg °

I'm wondering if I should battle the IP gods to attempt & move that sucker or just leave it where it is?

I have never tried this, do not have the custom bent wrench and would appreciate what I would be leaving or gaining by getting to -1.5ish offset?

TIA

 

[Matt Bachand]

I would recommend it. You already have the scanner it seems, so make/buy/find some IP wrenches, and give it a go. I noticed a good difference and I stopped at -1.38. You will also learn alot about your IP and other areas too.

 

[Chief915]

I agree with Matt, try and get it a little closer to where you want it to be.

 

[ak diesel driver]

x3

 

[NVW]

:iagree:

 

[Crankme69]

Ok thanks.

I have an F intake that is going on it this spring...so that will prolly be my chance to have a go at it...

Thanks again all

 

[JiFaire]

Come back and get some hints just before trying it, CrankMe... The guys are pretty good at not letting us forget any of the details we need to remember!

 

[Crankme69]

Will do thanks!

I will comment that it appears that reducing the TDC offset from my original findings 0.35 to my updated -0.18 has helped reduce most all of the diesel "PING" that I would here under light acceleration and it does also seem to be starting with less drag on the starter in the morning…

I am not sure if these observations can be backed up or negated with facts? But it does seem to run quieter when at normal operating temp.

No change in performance / acceleration, it has always moved out and run very well since I fixed the OPS & LP right after purchase.

Oh and it does have a chip, just need to look & see what one is in it, it's not stock...

That GMTD scan is really KEWL!