Fogging engines

[phaxtris]

The marine engine stuff was injected by the rest of the group and you did mention a curiosity with a pontoon boat outboard.



The comments about honed cylinders holding more oil is fine for a chev 350, but if we are talking about a general ask about an aircraft engine (which is 1930’s technology) and I was going to fly up in the air with it at some point you inhibit the engine.

You asked and it appears you don’t like my answer so if you feel agitated by the response that was not my intent. I just strongly disagree with the “Oh it’s fine” responses.

your mistaking me for the op, you asked why, i was giving you the other side of the coin, salt water was also not in my initial thoughts, pontoon boats are normally on lakes

the aircraft engines in general aviation today are from the 40's and 50's, the small block chevy was also designed and produced in the early 50's. Every engine ICE to this day, aircraft or not, requires the cylinders to be honed, the purpose of which is to hold oil on the cylinder walls for lubrication.

The general though of aircraft pistons engines being outdated relic's of the 30's is, in my opinion, silly

 

[DPittman]

As a late bystander to this conversation I hope I am not interjecting unwanted opinions,

Only unwanted opinions are political opinions, otherwise interject away!

 

[Gunnar]

your mistaking me for the op, you asked why, i was giving you the other side of the coin, salt water was also not in my initial thoughts, pontoon boats are normally on lakes

the aircraft engines in general aviation today are from the 40's and 50's, the small block chevy was also designed and produced in the early 50's. Every engine ICE to this day, aircraft or not, requires the cylinders to be honed, the purpose of which is to hold oil on the cylinder walls for lubrication.

The general though of aircraft pistons engines being outdated relic's of the 30's is, in my opinion, silly

Enjoying some time back in front of a keyboard and want to be clear that I am not trying to start an online fight but I think some things were lost in translation.

I understand why cylinders are honed, but honed cylinders do not provide any extra protection from corrosion like inhibiting does which is why I interjected the comment.
Also usually after overhaul with aircraft engines they install descant plugs in the top of the cylinders in the place of the spark plugs. These are cheap storage insurance, if you dont have any I think they can be purchased on aircraft spruce.

You might think my comments were a slight towards aircraft piston engines but I actually think it's a testament to the design.

The continuous fuel injection used by these engines is on display in the German Museum of Technology in Munich and was in use in 1933. It's exactly the same as the Bendix injection still in use today on most aircraft piston engines.

The air cooled horizontally opposed engines with Magnesium cases were in production by 1926.

The crankshafts using a tuned mass was used on radial engines in the 20's.

Magneto ignition systems are from the 1890's.

Aircraft engines since the introduction of regulation has been sacrificing technology for reliability.

I wish you good luck with your projects Sir

 

[Chicken lights]

Only unwanted opinions are political opinions, otherwise interject away!

Can we still hate the Habs or are you going to take all the fun away? 🙄

 

[Susquatch]

but honed cylinders do not provide any extra protection from corrosion like inhibiting does which is why I interjected the comment.

I was the one who made the comment about honing. It was only a reference to corrosion risks when new, not corrosion protection when new. However, the honing in a well used engine will hold oil which does provide some protection.

Quite a few years of my life were spent designing and testing automotive engines so I do know what I'm talking about. I am used to people disagreeing with me and other experts. Only a few things about engine design and performance are obvious.

Marine, small engines, and airplane engines are quite different from auto engines in many ways. Like many others here, I have lots of life experience with small engines, but it's all anecdotal not career expertise.