New engine...supposed to look like this ?

Tyc0 · 11-25-2020, 08:52 PM

Hey guys pretty simple question, purchased a used engine with 100k miles, and I just started tearing into it. Now I don't know a ton about engine but is it supposed to look like this for 100k? This would imply bad maintenance correct?

Bimmer_Engineer · 11-25-2020, 11:13 PM

Mines been well maintained and both cams look like the exhaust side...

Tyc0 · 11-25-2020, 11:17 PM

Quote:

Originally Posted by Bimmer_Engineer

Mines been well maintained and both cams look like the exhaust side...

That's what I was thinking, exhaust side looks good but I don't understand how the intake side is so dark.

JM98 · 11-26-2020, 01:52 AM

looks normal for mileage, if you really want to know how healthy it is look at the bearings

Saif2018 · 11-26-2020, 05:23 AM

Quote:

Originally Posted by Bimmer_Engineer

Mines been well maintained and both cams look like the exhaust side...

Both Cams on mine also look healthy (left side) @124k miles.

Smgs1992 · 11-26-2020, 06:32 AM

When i dis my vcg at 70k ish it looked like the left side on both sides

Tyc0 · 11-26-2020, 02:31 PM

Quote:

Originally Posted by Smgs1992

When i dis my vcg at 70k ish it looked like the left side on both sides

Any idea why something like this would happen ?

feuer · 11-26-2020, 09:25 PM

Quote:

Originally Posted by Tyc0

Any idea why something like this would happen ?

Intake side isn’t as hot and with long OCI when the oil loses its detergents you get that result. Either way nothing alarming. Chances are all is good!

Tyc0 · 11-26-2020, 11:02 PM

Quote:

Originally Posted by feuer

Quote:

Originally Posted by Tyc0

Any idea why something like this would happen ?

Intake side isn’t as hot and with long OCI when the oil loses its detergents you get that result. Either way nothing alarming. Chances are all is good!

That's what I was hoping to hear, thank you much!

Tyc0 · 11-30-2020, 10:06 PM

Thought id share what my now old engine looked like when I tore into it today...why so clean? 120k miles

Bimmer_Engineer · 11-30-2020, 10:56 PM

Quote:

Originally Posted by Tyc0

Thought id share what my now old engine looked like when I tore into it today...why so clean? 120k miles

Enquiring minds want to know...

11-25-2020, 08:52 PM	#1
Tyc0 Lieutenant 151 Rep 517 Posts Drives: BMW e92 335i Join Date: Sep 2019 Location: Oregon iTrader: (0)	New engine...supposed to look like this ? Hey guys pretty simple question, purchased a used engine with 100k miles, and I just started tearing into it. Now I don't know a ton about engine but is it supposed to look like this for 100k? This would imply bad maintenance correct? Attached Images
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11-25-2020, 11:13 PM	#2
Bimmer_Engineer Lieutenant Colonel 1049 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	Mines been well maintained and both cams look like the exhaust side...
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11-26-2020, 01:52 AM	#4
JM98 Lieutenant 397 Rep 532 Posts Drives: 2009 135i Join Date: May 2016 Location: SoCal iTrader: (0)	looks normal for mileage, if you really want to know how healthy it is look at the bearings
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11-26-2020, 06:32 AM	#6
Smgs1992 Captain 727 Rep 946 Posts Drives: 2007 bmw 335i Join Date: Apr 2020 Location: Cincinnati ohio iTrader: (0)	When i dis my vcg at 70k ish it looked like the left side on both sides __________________ 07 E92 335i 6MT, MMP inlets, DCI, VRSF 7.5 competition intercooler, VRSF catless downpipes, VRSF chargepipe, 335is clutch, Vader Solutions stage 2 LPFP, MHD stage 2+, Hawk HPS 5.0 pads, R1 Concepts drilled slotted rotors, TSW Nurburgring 19x8 19x9.5
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11-30-2020, 10:06 PM	#10
Tyc0 Lieutenant 151 Rep 517 Posts Drives: BMW e92 335i Join Date: Sep 2019 Location: Oregon iTrader: (0)	Thought id share what my now old engine looked like when I tore into it today...why so clean? 120k miles Attached Images
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