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Me78569

Testing Injector Pop Pressure in the real world

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lolol 250 psi is 17 bar.  bosch says that 310+17 is within spec.... so I guess 327 is the limit lolol

Id put them at 315 bar then

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This comes back to your 330 bar setup that you seem to like so much. Makes sense now. Being starting quality is good and smoke reduction is good too.

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4 hours ago, Carbur8tr said:

which is partially why no one has come forward and said that they could audibly hear a change in timing.  I know for me I honestly heard no difference and I suspect that there was not.

 

I had mentioned when I first went to 365 bar that it sounded like my idle got a little noisier, a slightly more pronounced rattle. If you've ever heard an injector on a pop tester this makes sense. Pop any given injector at 280 bar, and then 365 bar, and they definitely sound different.

Edited by kzimmer
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I reran the idle test with the stock bar injectors, I wasn't happy about the 120*f+ difference in egt in the logs it was too much to be correct.  this time the average egt was ~50*f more with 305 bar vs 330 bar, which is much more acceptible. weird thing is we see that 50*f difference in multiple steady state tests.   Rest of the stats are nearly the same.  Results are nearly the same. Conclusions are the same when I compare the 2 sets of injectors.

Edited by Me78569

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I've personally noticed a very large fluctuation of EGT's during idling this winter. Nothing recorded. But with different combinations of ambient temp (and subsequent IAT), and ECT, I've seen it float around quite a bit. Not saying this is the case 100% for you, but it makes sense that it could be a little inconsistent.

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