What cylinders is everyone considering? Reading the Beech forms seems like the Superiors are in favor over the new Continentals.


Sent from my iPhone using Tapatalk

With ECI out of the picture, I'd use your aviation dollars to strengthen SAP. That's the consumeristic side.

SAP has through hardened 4140 steel barrels. Continental recently copied this concept. SAP cylinder port will flow better straight out of the box. Polishing and flow matching produces bigger gains on a Continental cylinder because you're starting from a greater deficit.

I'd still consider a Continental factory reman under certain circumstances, but for a cylinder change, I'd chose Milleniums by SAP.

Well, I found the paperwork for my cylinders yesterday and the AD applies. I’ll probably visually verify it on at least one cylinder just to make sure. I’ve got about 330 hours left. Barring any other issues, that will give me the better part if three years to save and plan. Of course those 3 years aren’t guaranteed, so we will get a game plan in place.

When I helped manage a flying club, we used a few local guys but had various issues...won’t use them again...then started to use Western Skyways with no issues. Western also swapped out a cylinder for me on my previous plane, so I’m inclined to continue to use them. Since it’s already been topped once, I’ll be looking at an overhaul. Anyone else have any engine shop recommendations? The previous owner of my current plane recommended Corona Engines in SoCal. They did my current engine. Anyone heard of them or know anything about them?

Cory I used Corona Engine for my Pponk rebuild 640 hours ago. No issues since Engine works just fine no oil leaks no malfunctions. The only problem I had was it took three months for them to rebuild it.

BTW I do have ECI cylinders but they fall outside of the numbers listed for the A.D.

I went with Signature engines for my overhaul on iO-550 . Very happy with it so far . Also have a friend that used them for an o-470 in his Stinson .He is happy as well . They were very easy to deal with as well .

Cool. Thanks guys.


Sent from my iPad using Tapatalk

Well, I found the paperwork for my cylinders yesterday and the AD applies. I’ll probably visually verify it on at least one cylinder just to make sure. I’ve got about 330 hours left. Barring any other issues, that will give me the better part if three years to save and plan. Of course those 3 years aren’t guaranteed, so we will get a game plan in place.

When I helped manage a flying club, we used a few local guys but had various issues...won’t use them again...then started to use Western Skyways with no issues. Western also swapped out a cylinder for me on my previous plane, so I’m inclined to continue to use them. Since it’s already been topped once, I’ll be looking at an overhaul. Anyone else have any engine shop recommendations? The previous owner of my current plane recommended Corona Engines in SoCal. They did my current engine. Anyone heard of them or know anything about them?

I found out in August the AD applied to my PPonk and just got through replacing/flow balancing overhauled cylinders. The cylinders cost about as expected, including freight about $11,900. It was a tough pill to swallow and causes pause to this whole airplane ownership thing I survived, finished the break-in and running strong now. It is one thing if something is broke, but geezzz....

Just finished the anual on my 1956 C182. I just got a text from my mechanic and he says the AD does apply to my stock O470L. He said that I can go to 1000 hrs then the cylinders have to come off. That another 429 (4 or 5 years) I read in previous posts in this thread that it did not apply to stock displacement O-470s. If that is so where is it documented?

Looks like I may be building a smaller hangar.

Sorry to hear that Tim. My clock is still counting down. Probably another 2 years or so for me. The upside is hopefully be going to the 520F with more horsepower and a three blade prop.

qmdv wrote:Just finished the anual on my 1956 C182. I just got a text from my mechanic and he says the AD does apply to my stock O470L. He said that I can go to 1000 hrs then the cylinders have to come off. That another 429 (4 or 5 years) I read in previous posts in this thread that it did not apply to stock displacement O-470s. If that is so where is it documented?

Looks like I may be building a smaller hangar.

http://www.tdatacorp.com/iaprch/16-16-12.htm
When you read the AD it specifically states -520 or -550 engines or engines that are modified with -520 or -550 cylinders like a -470 with an STC. If you have a stock 0-470L with 470 cylinders then the AD does not apply to you.

Thi is the wording in the AD

This AD applies to all Continental Motors, Inc. (CMI) model -520 and -550 reciprocating
engines, and to all other CMI engine models approved for the use of model -520 and -550 cylinder
assemblies such as the CMI model -470 when modified by supplemental type certificate (STC), with
Continental Motors Inc., San Antonio (formerly Airmotive Engineering Corp.), replacement parts
manufacturer approval (PMA) cylinder assemblies, marketed by Engine Components International
Division (hereinafter referred to as ECi), part number (P/N) AEC 631397, with ECi Class 71 or Class
76, serial number (S/N) 1 through S/N 61176, installed.

Mechanic says that I have ECI cylinders so he say it applies

qmdv wrote:Thi is the wording in the AD

This AD applies to all Continental Motors, Inc. (CMI) model -520 and -550 reciprocating
engines, and to all other CMI engine models approved for the use of model -520 and -550 cylinder
assemblies such as the CMI model -470 when modified by supplemental type certificate (STC), with
Continental Motors Inc., San Antonio (formerly Airmotive Engineering Corp.), replacement parts
manufacturer approval (PMA) cylinder assemblies, marketed by Engine Components International
Division (hereinafter referred to as ECi), part number (P/N) AEC 631397, with ECi Class 71 or Class
76, serial number (S/N) 1 through S/N 61176, installed.

Mechanic says that I have ECI cylinders so he say it applies

I'm 99% sure hes wrong. They have to be -520 or -550 cylinders in order for the AD to apply. Nowhere in the AD does it say anything about -470 cylinders.

A1Skinner wrote:

qmdv wrote:Thi is the wording in the AD

This AD applies to all Continental Motors, Inc. (CMI) model -520 and -550 reciprocating
engines, and to all other CMI engine models approved for the use of model -520 and -550 cylinder
assemblies such as the CMI model -470 when modified by supplemental type certificate (STC), with
Continental Motors Inc., San Antonio (formerly Airmotive Engineering Corp.), replacement parts
manufacturer approval (PMA) cylinder assemblies, marketed by Engine Components International
Division (hereinafter referred to as ECi), part number (P/N) AEC 631397, with ECi Class 71 or Class
76, serial number (S/N) 1 through S/N 61176, installed.

Mechanic says that I have ECI cylinders so he say it applies

I'm 99% sure hes wrong. They have to be -520 or -550 cylinders in order for the AD to apply. Nowhere in the AD does it say anything about -470 cylinders.

That AD is one long sentence.

A1Skinner wrote:

I'm 99% sure hes wrong. They have to be -520 or -550 cylinders in order for the AD to apply. Nowhere in the AD does it say anything about -470 cylinders.

I think you may be correct. The O470 L uses a class 68 cylinder. The AD applies to the class 71 and 76

qmdv wrote:

A1Skinner wrote:

I'm 99% sure hes wrong. They have to be -520 or -550 cylinders in order for the AD to apply. Nowhere in the AD does it say anything about -470 cylinders.

I think you may be correct. The O470 L uses a class 68 cylinder. The AD applies to the class 71 and 76

From the ECI Application Chart the Class 71 is for 520 cubic inch engines. The Class 76 is for 550 cubic inch engines. The lowly O470L takes a class 68. I am now 99.9% thinking that I am OK

qmdv wrote:

qmdv wrote:

A1Skinner wrote:

I'm 99% sure hes wrong. They have to be -520 or -550 cylinders in order for the AD to apply. Nowhere in the AD does it say anything about -470 cylinders.

I think you may be correct. The O470 L uses a class 68 cylinder. The AD applies to the class 71 and 76

From the ECI Application Chart the Class 71 is for 520 cubic inch engines. The Class 76 is for 550 cubic inch engines. The lowly O470L takes a class 68. I am now 99.9% thinking that I am OK

Yup. Build a big sss hangar Tim! Haha.

I think you’re good Tim. Happy for you.

A1Skinner wrote:

qmdv wrote:

qmdv wrote:

A1Skinner wrote:

I'm 99% sure hes wrong. They have to be -520 or -550 cylinders in order for the AD to apply. Nowhere in the AD does it say anything about -470 cylinders.

I think you may be correct. The O470 L uses a class 68 cylinder. The AD applies to the class 71 and 76

From the ECI Application Chart the Class 71 is for 520 cubic inch engines. The Class 76 is for 550 cubic inch engines. The lowly O470L takes a class 68. I am now 99.9% thinking that I am OK

Yup. Build a big sss hangar Tim! Haha.

54x48 pole type structure. I know of one that was just built in Nampa. ID. Going to check it out before I build

54x48 pole type structure. I know of one that was just built in Nampa. ID. Going to check it out before I build[/quote]

Go at least 60 wide, then you can get either of the front two airplanes out without having to move the other. 60 wide is a "magic deminsion". 60x48 will fit 4-5 airplanes, 54x48 will 2-3 airplanes.