Briggs and Stratton 20HP

[96eb96]

I guess it is a motor vehicle so it can go here. Anyway it is a circa 2000 20hp opposed "boxer" v-twin i/c.
Ran great, about 700 hours with some oil smoke at startup. Pretty well maintained, and I believe oil was at the lower end of the hashmarks, some leaked after this incident.

Starter had issues, and I tried starting it with an impact driver(prob a bad idea, I'm thinking that hurt the bearings).

After changing the starter gear to a genuine Briggs (I bought a new starter and the off brand gear, changed twice, lasted maybe 20 starts).

it ran for about 2 min, then I heard a terrible noise.
It smoked too.
There is some oil leaking too, but I don't see any cracks (some of the engine is concealed).
Now it can only make 1/2 turn by hand. I guess it threw a rod?
Worth to tear down? I don't think there are parts for this motor anymore.
I asked a local shop, he said if you got that much use out of a big box store engine maintaining it you should work here. He said you certainly got your moneys worth. He said to buy a new motor or a new tractor.
He also said it can't hurt to pull apart and see what is damaged, but it wouldn't be cost effective if a shop did it.

I fixed the hydro trans a few years ago, it had a loose bolt.

 

[donalds]

I fix and do full rebuilds on ALL small engines

Without dissembling you will never know
But sounds like a broken rod ..aluminum..
It happens
99% of small engine s have a standard bolt pattern
So just about any engine will fit
You will have to connect your wires
Kill
Start
Ground
+a.c. 12v for lights

+dc 12v for battery charging

Will take a few hours for the swap

Or obviously buy the same engine

Oh please don't use a impact that's what broke stuff in the engine
Use a drill instead

Parts are available on eBay for sure

 

[Gary Crist]

I don't know what the engine is used for but, here is a solution!

Breaking: Kawasaki Offers Ninja H2 998cc Engine As Marine Crate Motor - The Watercraft Journal | the best resource for JetSki, WaveRunner, and SeaDoo enthusiasts and most popular Personal WaterCraft site in the world!

In late 2013, Kawasaki Heavy Industries, Ltd. set the motorcycle world on fire with the unexpected unveiling of an all-new and centrifugally-supercharged 998cc inline 4-cylinder at the 2013 Tokyo Motor Show. Although reminiscent of the larger 1,498cc (1.5 liter) DOHC 4-cylinder four-stroke found...

watercraftjournal.com

I do not know about fitment but, boy will it run fast! Can you find a used lawn tractor
cheap? How about Harbor Freight?

 

[96eb96]

I don't know what the engine is used for but, here is a solution!

Breaking: Kawasaki Offers Ninja H2 998cc Engine As Marine Crate Motor - The Watercraft Journal | the best resource for JetSki, WaveRunner, and SeaDoo enthusiasts and most popular Personal WaterCraft site in the world!

In late 2013, Kawasaki Heavy Industries, Ltd. set the motorcycle world on fire with the unexpected unveiling of an all-new and centrifugally-supercharged 998cc inline 4-cylinder at the 2013 Tokyo Motor Show. Although reminiscent of the larger 1,498cc (1.5 liter) DOHC 4-cylinder four-stroke found...

watercraftjournal.com

I do not know about fitment but, boy will it run fast! Can you find a used lawn tractor
cheap? How about Harbor Freight?

HF has one vertical one that is 999. I've seen some briggs in the 5-600 range.

 

[96eb96]

I fix and do full rebuilds on ALL small engines

Without dissembling you will never know
But sounds like a broken rod ..aluminum..
It happens
99% of small engine s have a standard bolt pattern
So just about any engine will fit
You will have to connect your wires
Kill
Start
Ground
+a.c. 12v for lights

+dc 12v for battery charging

Will take a few hours for the swap

Or obviously buy the same engine

Oh please don't use a impact that's what broke stuff in the engine
Use a drill instead

Parts are available on eBay for sure

Yeah, I think now the impact did it in, although the small engine guy didn't think so. He said it was probably reaching end of life.
He also said if two starters got chewed up fast, that is another smoking gun.
Not an ordinary impact either, the HF battery earthquake :lol:.

So what if you use an impact to take off a stubborn crank bolt on a car? Not a good idea I guess

The shaft lengths for the PTO seem different though. probably will pull it just to see the carnage.