Briggs Vanguard 14/16HP & 18/20HP Engine Upgrades and Identification

[Nubs]

Cool cut away

[Nubs]

20HP 2 barrel upgrade parts

Parts and Diagrams for Briggs and Stratton 351447-1203-E1

[chris davison]

Hey guys are the verticle engine parts the same as the horizontal? I bought a 22hp verticle for my riding mower and have the old 20 hp sitting around for low compression in the right cyl. Its a briggs v twin 20 hp. heads coils carb cylinders or whatever cheep.

[fmints]

Correct me if I'm wrong guys, but I believe there are a few differences between the vertical and horizontal guessing that the two engines are the same line of engine i.e. vanguard and vanguard, or intek and intek.

differences:

blocks (location of mounting holes for engine, either side or bottom)
oil pump pickup
pto side engine case (variation of where the oil dip stick is located)
carb intake manifold and carb may differ, depending on application

similiarities:

piston and rings
crankshaft, flywheel, starter
connecting rods
camshaft, pushrods, heads, valves etc.
coils, stator
engine shrouds and cover (tin)
Air filter assembly (depending on application)

[fmints]

Cool cut away

Yeah, really cool!!

[Nubs]

Correct me if I'm wrong guys, but I believe there are a few differences between the vertical and horizontal guessing that the two engines are the same line of engine i.e. vanguard and vanguard, or intek and intek.

differences:

blocks (location of mounting holes for engine, either side or bottom)
oil pump pickup
pto side engine case (variation of where the oil dip stick is located)
carb intake manifold and carb may differ, depending on application

similiarities:

piston and rings
crankshaft, flywheel, starter
connecting rods
camshaft, pushrods, heads, valves etc.
coils, stator
engine shrouds and cover (tin)
Air filter assembly (depending on application)

Speaking Vanguards your pretty much right on, the crankshafts are different. the intake manifold and carbs are the same but needs added parts to work on the horizontal.

[Mflagg73]

Thank you all for the useful info! I have the 16 now and need to pull the restrictors and I also just picked up a newer 18 for $300 and will now be searching for the intake and carb to make that a 20!
Thanks again!
Mike

[Nubs]

breathe my pasty friend

[riotwarrior]

breathe my pasty friend

nice...very nice indeed....

Yer cutaway engine?

[Nubs]

That cutaway picture is from the Briggs plant in Milwaukee, I got to go through there Museum last yr.

[thinhorn]

I just got a 2015 580 6x6 for a second machine.Ive put 30 hrs on it since picking up mid November.Ive changed the oil twice my question is its smells like it pretty rich I'm wondering if removing those exhaust restrictors will lean it out a bit or can a guy rejet these engines .Power seems good ,pretty happy with this little machine it handles like a sports care compared to my avenger.tks for any info Robin

[RAMHVAC]

Jpsswift1,

Great post I was pretty excited to gain the cheap 2 extra HP. I have the 14 hp vtwin. I pulled the exhaust manifold and did not see restrictors? How obvious are the sleeves? Could I be missing them? FYI my motor is a 2013.

Thanks,

[Rck90]

Hey, Hiballer, did you pull out those restrictors?

[liflod]

Vanguard governor modification.[/B]
Here's how I bypass my governor on my machines. The governor is used until the throttle is about 1/2 to 3/4, then the govenor is bypassed.

Thread a piece of throttle cable through the governor spring using the same holes as the spring uses.
https://photos.app.goo.gl/I3O9axy4yB8pxBLX2


Install cable stop on open end of cable.


Start the engine and let the governor settle in. Move the throttle stop down the cable leaving about 1/4 inch or so of slack. This may need moved depending on your set up.

So now the throttle works against the governor spring until the spring stretches to the length of the cable. It is nice to have the governor when technical riding and bypassing it on the open smooth trails. Works great to get the extra RPMS out of your machine when needed.

[Nubs]

Very Nice

Looks like there is enough room that a fella could drill a hole in the governor arm and run the cable out the back side also.

Good post...