PPonk ID
- Thread starter Eddie Foy
- Start date
mike mcs repair
Registered User
chugiak AK
cylinders are bigger
Eddie Foy
MEMBER
South Florida
Do 520 jugs look any different other than size?
No. Slightly bigger in diameter in bore but otherwise identical. Same with case and accessories. If the motor is legal it should have the supplemental data tag. Another mod that most guys opt for is the seventh stud, a common hold-down plate between cylinders, but the presence or absence isn't conclusive evidence.
Mines striped down for annual at the moment, you want me to measure something or take some pics in the morning?
.
Eddie Foy
MEMBER
South Florida
A pic of the data plate would help! Thanks.
Steve Pierce
BENEFACTOR
Graham, TX
Steve Pierce
BENEFACTOR
Graham, TX
Steve Pierce
BENEFACTOR
Graham, TX
Depends on which model 180. Had to have the exhaust flanges changed to the 4 bolt from the original 2. Cowls and airboxes were different on different model years.
sj
Staff member
Northwest Arkansas
Hmmm I can't help but notice Dave's hat...
sj
Staff member
Northwest Arkansas
Eddie, if you have not read this, you will want to: http://skywagons.com/content/cessna-skywagon-year-changes
sj
sj
sj
Staff member
Northwest Arkansas
hotrod180
FRIEND
Port Townsend, WA
Interesting that both of these engines appear to have primer lines going to only 4 of the 6 cylinders.
Any particular reasoning behind this?
My 53 C180's 470K primer lines are plumbed with a couple tees, going to only 2 cylinders.
Don't remember exactly which ones but they're both on the LH side.
A buddy's 54 C180's 470J had all 6 cylinders primed, with a 6-way distribution block as shown here.
I thought mine had been goobered up by someone, but my C180 IPC shows it can be either way.
Seems to me like priming all 6 would be the way to go. ??
mike mcs repair
Registered User
chugiak AK
so you can't flood ALL of the cylinders...
mike mcs repair
Registered User
chugiak AK
just a FYI, if you use a IO-520 and convert it to a PPonk you do NOT get the higher TBO, or so FAA determined to the dismay of a customer...
Steve Pierce
BENEFACTOR
Graham, TX
I don't pay much attention to the manufacturer's TBO anyway. Luckily I only work on Part 91 stuff and these times and calendar times are not regulated.
texmex
MEMBER
Hanging Rock, Australia.
Now that can be deceptive. I've got the same 6-way block on mine and I found out last weekend when changing out six cylinders that the middle two were blanked at the cylinder end. The lines from the block were running to the blanks.
My buddy who spent years overhauling Lycomings tells me he's seen the 360's with everything from 1 to 4 with priming lines.
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Eddie Foy
MEMBER
South Florida
How many people get TBO on any Continental?
mike mcs repair
Registered User
chugiak AK
we went through a few for airtaxi and a few prop strikes got a few.
I fully expect to and plus, but I fly it a bunch.
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hotrod180
FRIEND
Port Townsend, WA
What do you mean when you say "blanks"?
If I was disconnecting some of the primer lines, I would remove the tubing and install a plug at the distributor manifold.
Some people might go the quick and dirty route, and just pinch the tubing flat at either end.
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