Guess where this Goes!!!

[trepetti]

That's easy. It's a tape measure and it goes in your toolbox! Now what the hell is that friggin thing underneath it?

 

[TownsendsFJR1300]

Homemade clutch alignment pin for an automotive manual transmission (used for aligning the clutch disc and pressure plate when assembling)?

 

[FinalImpact]

Its a receiver hitch pin that ensures your trailer NEVER MAKES IT to its destination without total detachment! :thumbup:

 

[FinalImpact]

If it didn't have those big aluminum bumpers on each end I'd opt for hammered Wrist Pin from an engine.

 

[Ragnar]

Does it go in a lathe?

 

[Raptorman53]

If it didn't have those big aluminum bumpers on each end I'd opt for hammered Wrist Pin from an engine.

Well it is a wrist pin! Good job.

 

[TownsendsFJR1300]

Well it is a wrist pin! Good job.

Thats the first wrist pin I've seen with such largly tappered ends...

What kind / brand of engine? With such a large bore and flat top piston, a big block of some sort?

 

[famous556]

Thats the first wrist pin I've seen with such largly tappered ends...

What kind / brand of engine? With such a large bore and flat top piston, a big block of some sort?

And the rings seem really deep (far from the top of the piston) like maybe a diesel.

ETA:

Googled the piston markings and looks like its from a prop plane engine. Continental brand.

 

[TownsendsFJR1300]

And the rings seem really deep (far from the top of the piston) like maybe a diesel.

ETA:

Googled the piston markings and looks like its from a prop plane engine. Continental brand.

I think most diesel pistons are dished, an airplane engine, I'd tend to agree. I looked up the #'s too and couldn't find anything...

Thanks, we'll see..

 

[Raptorman53]

And the rings seem really deep (far from the top of the piston) like maybe a diesel.

ETA:

Googled the piston markings and looks like its from a prop plane engine. Continental brand.

Yep. Continental TSIO-520-WB installed on my 1976 Beech 58P. That piston has about 1100 hours of use. We ended up replacing all the jugs after we found this.

View attachment 48893

Turns out ECI had a bad batch of jugs. All of ours fell in the serial number range. The inside looks nice and clean for those hours though.

View attachment 48894

 

[FinalImpact]

Well it is a wrist pin! Good job.

You maintain the AFR via EGT? Looks lean from the burn. Almost thought it was from an alcohol fuel but those keep pistons clean. Q? Is it a bearing on the wrist pin or a bushing and why is it so torn up?

 

[TownsendsFJR1300]

Yep. Continental TSIO-520-WB installed on my 1976 Beech 58P. That piston has about 1100 hours of use. We ended up replacing all the jugs after we found this.

View attachment 48893

Turns out ECI had a bad batch of jugs. All of ours fell in the serial number range. The inside looks nice and clean for those hours though.

View attachment 48894

At least its good you found the problem with all three wheels on the ground...

 

[Raptorman53]

You maintain the AFR via EGT? Looks lean from the burn. Almost thought it was from an alcohol fuel but those keep pistons clean. Q? Is it a bearing on the wrist pin or a bushing and why is it so torn up?

I use the TIT gauge to manage the AFR. I run at least 100 rich of peak. So, it's pretty clean considering. It's a bushing. As for the condition of the pin I'm not sure. It was that way when I went by the shop.


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[Raptorman53]

At least its good you found the problem with all three wheels on the ground...

I'm glad I found it on the ground too. All the gauges checked fine on the run up. The plane just didn't feel right. So, I told the pax we were not going, taxied to MX, took the cowling off and found the bad piston.


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[famous556]

I'm glad I found it on the ground too. All the gauges checked fine on the run up. The plane just didn't feel right. So, I told the pax we were not going, taxied to MX, took the cowling off and found the bad piston.


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Good on you for being astute enough to notice there was a problem despite normal readings. :thumbup:

 

[FinalImpact]

Lost count but here is my entry!
What is it?

 

[TownsendsFJR1300]

Lycom (sp?) aircraft/airboat engine?

 

[Raptorman53]

Corvair car engine. Converted for aircraft use? I am assuming for a homebuilt LSA.


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[FinalImpact]

Corvair car engine. Converted for aircraft use? I am assuming for a homebuilt LSA.


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Correct!
Appears it once was a PRE 1965 Chev Corvair flat 6 145c.i. air cooled engine @102hp w/ a half @as conversion. I was LMA when I saw it as it doesn't rate too air worthy IMO.

We used to run the 165c.i. ones in sand rails. Had the 4 1bbls and factory rated at 140hp.
A Google image
corvair engine - Google Search

 

[Raptorman53]

Yea. I'm not a big fan of putting car engines on aircraft. Just last month I saw a guy in a gyro copter throw a rod on take off. He had a rebuilt Subaru engine on it.

Anyways. Next item is...

View attachment 48924