Blown up sir! 3.2 rod bearing story

[ChrisBennet]

I was out in the garage today and found something from years ago.

The story: I was at driving at Watkins Glen when I heard this "Bang!". I quickly looked down at my instruments and the oil pressure gauge read 5 bar. I limped into the pits and turn off the car. I can't remember for sure don't think it would start after that (it was a long time ago).

I tore down the motor when I got home and found this in the sump:



#5? rod bearing was MIA. I figure I must have been hallucinating/mistaken about seeing 5 bar on the gauge. I mentioned it to an engine builder and he said that the 911 oil pump delivers so much volume that what I saw was real.

I thought this might interest the gang. :-)

[dezzmo]

It looks like you now have some "Wall Art" material

[stownsen914]

Years ago my dad had a rod bearing failure (also at WGI) on a '70 911, and reported that the oil pressure increased. Sounds counter-intuitive, but it turned out that an oil passage had become blocked. In 1970 the pressure gauge was at the front of the engine, so a blockage downstream could indeed cause a higher reading where the pressure sender was located. Not sure whether the blockage caused the failure, or was the result of it.

[r lane]

Reading pressure at the pully end should aid in eliminating a possible false reading due to schrapnel blockages that could occur between 8 and 1. No complete fail safe method, but the pully end seems to have an advantage

[prschmn]

That stuffs good on cereal. But what's that round thingie I wonder-not the dime which is
more than this comment is worth.

[boyt911sc]

Chris,

What is the mysterious part in your picture? That “thing” could NOT be part of the metallic debris from your motor. Any idea? Thanks.



Let’s play a game to pass the time. I will offer a $ dollar who could identify it. Thanks.

Tony

[dannobee]

It might be the retaining cap on the air bleed in the oil pressure fed tensioner.

[boyt911sc]

Originally Posted by dannobee

It might be the retaining cap on the air bleed in the oil pressure fed tensioner.

I don’t think so. Try again. Thanks.

Tony

[r lane]

Need mo better views, but resembles a chain housing cover cup washer for a 3.6. Scaling it against the dime though, it is too small enough I believe, but appears to have a radius to its outer edge.

[boyt911sc]

Originally Posted by r lane

Need mo better views, but resembles a chain housing cover cup washer for a 3.6. Scaling it against the dime though, it is too small enough I believe, but appears to have a radius to its outer edge.

r lane,

Any other guess? Strike two!

Tony

[88911coupe]

Beer cap?

[boyt911sc]

Originally Posted by 88911coupe

Beer cap?

Strike 2 Ball 1 (foul ball). Must have been drinking too much beer.

Tony

[911pcars]

I vote for a stray spring retainer from your favorite semi-automatic rifle.

More related, a spring retainer from a VW:
https://www.buggiesunlimited.com/golf-cart/e-z-go-3-8andprime;-accelerator-spring-retainer-(fits-1994-up)/6389

And how did the dime escape the carnage or is that the prize for guessing corectly? :-)

[evan9eleven]

I don’t know what it is, but that schrapnel pile says that the fix will definitely cost more then 10 cents.

[ChrisBennet]

Originally Posted by boyt911sc

Chris,

What is the mysterious part in your picture? That “thing” could NOT be part of the metallic debris from your motor. Any idea? Thanks.

Let’s play a game to pass the time. I will offer a $ dollar who could identify it. Thanks.

Tony

Hi Tony,
You want me to get a better picture of the "mystery part" ?

[boyt911sc]

Originally Posted by ChrisBennet

Hi Tony,
You want me to get a better picture of the "mystery part" ?

Chris,

You had been AWOL for a while and thought you might be in a self imposed quarantine. Glad you have the time to add and help identify the stray object. I don’t think the mysterious part in your photo came from your motor’s debris. We will come to that later.

Since you are original poster, no one could could identify it better than you. Did you have a car with CIS before? Thanks.

Tony

[Marwil]

Case through bolt washer!

[Walt Fricke]

Too small for that. Got me stumped. Oil pumps don't have washers under the nuts which hold the sections together. Looks too large to be part of an oil squirter?

[safe]

Is it the end part of a 3.6 chain tensioner? (How on earth that could have ended up in a 3.2...)

[ChrisBennet]

Originally Posted by boyt911sc

Chris,

You had been AWOL for a while and thought you might be in a self imposed quarantine. Glad you have the time to add and help identify the stray object. I don’t think the mysterious part in your photo came from your motor’s debris. We will come to that later.

Since you are original poster, no one could could identify it better than you. Did you have a car with CIS before? Thanks.

Tony

It didn't have CIS. It was a straight US 3.2L. I didn't twin plug until later.
-Chris