C-145-2H Engine Overhaul

How to keep the Cessna 170 flying and airworthy.

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nippaero
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Re: C-145-2H Engine Overhaul

Post by nippaero »

UPS delivered two boxes from Aircraft Specialties this afternoon. The cam and crank were inside. They look like new. The crank was still within original specs and the cam got re-ground. I was surprised how much the parts were to re-bush the counterweights. They ended up being more than the labor.

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Here's the business end after it was rebuilt and coated.
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Counterweights
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Everyone always wants to know how much it costs to overhaul an engine. So I am going to post the costs for mine. Here was the bill for a crank and cam from AS. Notice the cost of those bushings! :o Turn around time was about two weeks.
Image
Last edited by nippaero on Fri Dec 23, 2016 5:00 pm, edited 1 time in total.
1952 170B
N8180A s/n 25032
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sfarringer
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Re: C-145-2H Engine Overhaul

Post by sfarringer »

Looks to me like they have 8 extra 530863 bushings on that invoice...... 8O
Ragwing S/N 18073
Kurt Aichele
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Re: C-145-2H Engine Overhaul

Post by Kurt Aichele »

If you want to plug the muffler to pressure test, go to a local hardware store or plumbing supply house with your muffler in hand and ask for Econo-Plugs. They are basically a tapered solid rubber plug with a washer on each end and a bolt that runs thru the center and a wing nut on one end. Put the Econo-Plug in the pipe and tighten the wing nut. Will expand and seal the pipe.
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canav8
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Re: C-145-2H Engine Overhaul

Post by canav8 »

Kurt Aichele wrote:If you want to plug the muffler to pressure test, go to a local hardware store or plumbing supply house with your muffler in hand and ask for Econo-Plugs. They are basically a tapered solid rubber plug with a washer on each end and a bolt that runs thru the center and a wing nut on one end. Put the Econo-Plug in the pipe and tighten the wing nut. Will expand and seal the pipe.
+1
52' C-170B N2713D Ser #25255
Doug
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canav8
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Re: C-145-2H Engine Overhaul

Post by canav8 »

Kurt Aichele wrote:If you want to plug the muffler to pressure test, go to a local hardware store or plumbing supply house with your muffler in hand and ask for Econo-Plugs. They are basically a tapered solid rubber plug with a washer on each end and a bolt that runs thru the center and a wing nut on one end. Put the Econo-Plug in the pipe and tighten the wing nut. Will expand and seal the pipe.
+1
52' C-170B N2713D Ser #25255
Doug
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GAHorn
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Re: C-145-2H Engine Overhaul

Post by GAHorn »

sfarringer wrote:Looks to me like they have 8 extra 530863 bushings on that invoice...... 8O
Yep. There should only be Two for the complete assy.

<edit> Perhaps it's a typo (and price mistake due to the typo), maybe the secy meant 530868, plate, crankshaft damper counterweight pin. There are 8 of those.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
bagarre
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Re: C-145-2H Engine Overhaul

Post by bagarre »

gahorn wrote:
sfarringer wrote:Looks to me like they have 8 extra 530863 bushings on that invoice...... 8O
Yep. There should only be Two for the complete assy.
Damn! That catch in itself could make the 170 membership fee pay for itself!
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GAHorn
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Re: C-145-2H Engine Overhaul

Post by GAHorn »

Check out page 10 of the IPC for the engine:

http://cessna170.org/forums/viewtopic.php?f=29&t=13249
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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nippaero
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Re: C-145-2H Engine Overhaul

Post by nippaero »

George, So I am really confused on the number of bushings now :D Is there a misprint in the IPC? Or is it possible these have been superseded with different counterweights?

I called AS and talked to the shop foreman. He said it the invoice was correct. :?:

Looking at the IPC, are the quantities correct?

Each counterweight should have four bushings for a total of 8. Correct?
Each crank ear should have two for a total of four. Correct?
1952 170B
N8180A s/n 25032
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c170b53
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Re: C-145-2H Engine Overhaul

Post by c170b53 »

There's bushings in each bore if that helps.
Jim McIntosh..
1953 C170B S/N 25656
02 K1200RS
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GAHorn
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Re: C-145-2H Engine Overhaul

Post by GAHorn »

nippaero wrote:George, So I am really confused on the number of bushings now :D Is there a misprint in the IPC? Or is it possible these have been superseded with different counterweights?

I called AS and talked to the shop foreman. He said it the invoice was correct. :?:

Looking at the IPC, are the quantities correct?

Each counterweight should have four bushings for a total of 8. Correct?
Each crank ear should have two for a total of four. Correct?
Look at fig 4 on pg 10. Count 'em yourself. TCM counted them on pg 11. While I'm not current as an engine assemblyman, it looks to me like they've either overcharged for the bushings or typoe'd the pn's.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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Bruce Fenstermacher
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Re: C-145-2H Engine Overhaul

Post by Bruce Fenstermacher »

So we can all look at the IPC and count.
Screen Shot 2016-12-24 at 7.27.47 PM.png
There are 8 bushings total.

2- 530863
2- 531015
4- 530866
8 thingies 8)

Something doesn't add up.
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sfarringer
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Re: C-145-2H Engine Overhaul

Post by sfarringer »

Bruce Fenstermacher wrote:So we can all look at the IPC and count.
Screen Shot 2016-12-24 at 7.27.47 PM.png
There are 8 bushings total.

2- 530863
2- 531015
4- 530866
8 thingies 8)

Something doesn't add up.
Plus Qty 4 531016 bushings, for a total of 12.
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c170b53
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Re: C-145-2H Engine Overhaul

Post by c170b53 »

There's bushings in each bore if that helps.
Sorry I guess that didn't work, too good A? (eh?). :D
Jim McIntosh..
1953 C170B S/N 25656
02 K1200RS
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Bruce Fenstermacher
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Re: C-145-2H Engine Overhaul

Post by Bruce Fenstermacher »

Screen Shot 2016-12-24 at 9.38.05 PM.png
2- 530863
2- 531015
4- 530866
8 thingies 8)
+4 doohickeys :? (531016)
12- whatchamacallits

A.S. is listing 20 bushings :?
CAUTION - My forum posts may be worth what you paid for them!

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Email: brucefenster at gmail.com
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