Hi,
I've found a couple of options for a Briggs engine online.

One is an older engine (but almost unused) and one is almost new.
My question is not regarding the cost of these. It's regarding the quality of the older Briggs engines versus the newer ones.
Anyone would initially think the newer would be better.
But – when you look at the older engine, it has metal parts versus plastic on the newer, but are there differences to the internals or materials used to make the engine that make one more solid than the other.
Old engine is around 17 years old, a 7hp model 171400 - 275cc
New engine is a BOO 1100 series, Torque = 11 ft lbs – 250cc
Both are magnetron.

Will seals etc have aged significantly on the older one after 17 years, anything I should be concerned about with age, what will be ready to be replaced simply because of age?

On the newer one, are they now cutting corners and making a lesser quality machine than the older one above – anything to be concerned about the newer ones - newer stuff that doesn't work, or breaks easier?

I'm looking for one that's going to last best.
Also does Briggs have a cutoff date for making replacement parts for their machines?

Thank you for your help:thumbsup:

This is a very subjective question. Almost anything I or someone else could reply would easily be met with a debate about one's position.

So, at the risk of being harassed by either side, I offer you this:

First, while B&S changed their engines very little for decades, with many newer engine parts being no different from those made years ago, THAT has changed. Numerous components for engines made only 15 years ago are now no longer available. So there is a concern with obsolescence.
Second, the 171400 series is a flathead, or side-valve engine. Buying anything made more recently is going to be over-head valve. Overhead valve engines inherently use less fuel and oil, and have better cooling for the cylinder and other components. Oil change frequency is longer with them also.

I love flat-head engines (like the hot-rod engine in the Iron Man movie - first car engine I ever rebuilt back in 1977), but they are next to impossible to bring into compliance with today's EPA requirements.

Without opening myself up to more criticism, I believe I've said enough. You probably can infer which engine I would suggest you go with....
Paul

Yes Older engines where built better. But are also harder to find parts for. I think you will be much happier with a newer engine in the long run. As you will get betty "fuel economy" and easier to maintain. Also in my opinion they run alot quieter.