Need help interpreting DME and Bore Scope results
#1
Racer
Thread Starter
Need help interpreting DME and Bore Scope results
So I'm looking at a very well cared for 2008 911 C4 (3.6) with 49k miles that has been a Texas car all of its life. The PPI scoped it from the oil pan side. Some of the pics are blurry because of oil getting on the camera. Please take a look and let me know what you think.
Cylinder 1
Cylinder 3
Cylinder 4
Cylinder 5
Cyl 6
Cyl 6
Cyl 6
Cyl 6
Cyl 6
Cyl 2
cyl 1
Cylinder 1
Cylinder 3
Cylinder 4
Cylinder 5
Cyl 6
Cyl 6
Cyl 6
Cyl 6
Cyl 6
Cyl 2
cyl 1
#2
Rennlist Member
DME Report - Looks Good, Ranges in 1/2 are normal, with two full revolutions in range 3 (less than one sec in that state and more than 50hrs ago ). (No "Money shifts" which would indicate revolutions in 4,5,6)
Bore Score - Tough to say with those pictures.
Bore Score - Tough to say with those pictures.
#3
Rennlist Member
DME looks good.
Bore Scope photos tough to make out due to poor photos but from what I can see the results seem ok.
Bore Scope photos tough to make out due to poor photos but from what I can see the results seem ok.
#5
RL Community Team
Rennlist Member
Rennlist Member
There are definitely vertical light scuffing marks in a couple of those photos. The one with a dark oil spot also concerns me as the oil tends to stick in the scratches, but I can't really tell what I'm looking at in that photo so may be nothing, and although very light, the process has stared in cylinder 6 from what I see here.
#7
Three Wheelin'
There are definitely vertical light scuffing marks in a couple of those photos. The one with a dark oil spot also concerns me as the oil tends to stick in the scratches, but I can't really tell what I'm looking at in that photo so may be nothing, and although very light, the process has stared in cylinder 6 from what I see here.
Last edited by rileyracing1; 03-09-2023 at 01:30 PM.
The following users liked this post:
ATX_Native (03-09-2023)
Trending Topics
#9
Racer
Thread Starter
So I just talked to the shop owner (a Porsche/Flat 6 specialist) who performed the borescope. He said that this engine is clean and there's nothing that would turn him away from it. We went through each of the pics and there's some light scuffing that he said is normal for engines with this mileage but none of it is out of the ordinary and he doesn't expect it to impact the life of the engine.
The following users liked this post:
jbl16 (03-10-2023)
#10
Three Wheelin'
#11
#12
Rennlist Member
All cylinder walls were clean and no scoring.
The Base 3.6L engine is showing less and less scoring as these engines gain higher miles.
The 3.8L "S" engine Bore Scoring much more common.
Last edited by groovzilla; 03-10-2023 at 12:42 PM.
#14
Racer
Thread Starter
I have posted several photos in various BS Threads of my 2006 997 C4 Cylinder walls when it was Bore Scoped at 106,000 miles which was last year and 1000 miles ago.
All cylinder walls were clean and no scoring.
The Base 3.6L engine is showing less and less scoring as these engines gain higher miles.
The 3.8L "S" engine Bore Scoring much more common.
All cylinder walls were clean and no scoring.
The Base 3.6L engine is showing less and less scoring as these engines gain higher miles.
The 3.8L "S" engine Bore Scoring much more common.
#15
RL Community Team
Rennlist Member
Rennlist Member
Peace
Bruce in Philly (now Atlanta)
Last edited by Bruce In Philly; 03-10-2023 at 01:37 PM.