Rebuild: I found where my oil went....

[emcon5]

Well, the source of my oil consumption problem has been identified:

#2 Exhaust port, oil flowing down from the valve guide,into the port: They all look pretty much like this:


#6 piston and head, exhaust port looks about the same, but this one had a broken oil control ring. The piece is sitting on the piston skirt. Interesting thing is the spark plug didn't look any different than the others.


Other fun and games:

Oil return tube art: 3 of 4 had the same little mountain buildup of oily dirt one one end.


As I figured, my pistons are stamped KS


Anyone have a set of used 3.2 Mahle jugs they need to unload for dirt cheap?

Tom

[Chuck Moreland]

Acknowledging your problem is the first step to recovery.

As long as your getting new cylinders, might as well bump up the bore and compression.

[Wayne 962]

See my warnings on increasing the compression on Motronic 3.2 engines:

Rebuilding 3.2L for power - suggestions please

-Wayne

[Doug Zielke]

Tom, check your e-mail.

[emcon5]

Originally posted by Wayne at Pelican Parts
See my warnings on increasing the compression on Motronic 3.2 engines:
-Wayne

Wayne, my engine is an SC, so the you-ain't-got-no-knock-sensor-so don't-go-crazy-with-the-compression certainly applies, but my starting compression is a little lower to begin with. I am stuck with California piss-water premium gas though, so I am thinking 9.5:1 is about as high as I want to go. I may be overly conservative, but 9:8:1, 91 octane and a really hot day may make an unhappy combo.

At this point, I am planning on JE pistons, and sending my cylinders up to Reno to get reconditioned. The reason I want a cheap set of jugs from a 3.2 is that the guys in Reno can bore them out to 98mm, with JE pistons for a fairly economical short stroke 3.2. Combined with 964 cams and SSI's it should be a nice little motor, work with my existing CIS system and still pass Smog.

Originally posted by Doug Zielke
Tom, check your e-mail.

Got it Doug, thanks for the info.

For an engine that didn't drip any oil, it sure was filthy.


Tom

[1980SC]

Nice pics Tom.

My SC's oil consumption is around 170 miles per quart. That's probably how mine looks on the inside.

Rob
1980SC