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 Oppose Briggs Vertical to horizontal

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Outlaw77
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PostSubject: Oppose Briggs Vertical to horizontal   Oppose Briggs Vertical to horizontal Icon_minitimeFri Oct 19, 2018 2:12 pm

Alright people, I'm in need of information.
I have a Briggs 20hp pressure lube vertical shaft opposed twin. What I need is I'm formation on how to convert this engine to a horizontal shaft for a pulling tractor that I'm building.
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AllisKidD21
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PostSubject: Re: Oppose Briggs Vertical to horizontal   Oppose Briggs Vertical to horizontal Icon_minitimeFri Oct 19, 2018 3:53 pm

Well you would need a different intake manifold to get the carb to sit the right way when the engine is flipped up. You could make one yourself if you're handy with the fab work but it'd probably be easier to try and find one from a horizontal.

You'd also need to make the hole in the block for the horizontal style oil dipstick, and plug the spot were the original one was.

Lasty you'd need to figure out a way to bolt it down to the tractor frame, as the mounting tabs obviously won't work once it's flipped up. The base for a horizontal shaft oppy might bolt right to where the inspection plate is on the vertical oppy, but I'm not positive.

That's all I can think of, I'm not sure if there's much else involved but I don't think so.

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Outlaw77
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PostSubject: Re: Oppose Briggs Vertical to horizontal   Oppose Briggs Vertical to horizontal Icon_minitimeFri Oct 19, 2018 4:42 pm

I got the base plate and intake off of a horizontal that was blown up and everything fits up right, but y main problem is being the pressure lubes oil pump. I need an idea on how to make an oil pickup or some other way to have to engine have oil pressure.
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Crazy_Carl
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PostSubject: Re: Oppose Briggs Vertical to horizontal   Oppose Briggs Vertical to horizontal Icon_minitimeFri Oct 19, 2018 8:39 pm

Is there a way to change the oil pickup in the crankcase some how?  One crazy idea is to convert it to a dry sump system.
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Outlaw77
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PostSubject: Re: Oppose Briggs Vertical to horizontal   Oppose Briggs Vertical to horizontal Icon_minitimeFri Oct 19, 2018 9:27 pm

A dry sump system would be interesting but it would be kind of overkill for what I'm doing. I'm not doing anything perfesional, it just a few people around my are that like to get together and do some pulls.

I would rather modify it for the least amount of money considering I only payed $20 for the engine and a dry sump would just be overkill and the price of the parts would cost way more than what I have into project right now.
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prancstaman
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PostSubject: Re: Oppose Briggs Vertical to horizontal   Oppose Briggs Vertical to horizontal Icon_minitimeMon Oct 22, 2018 9:00 pm

I converted a 6hp Tecumseh that was pressure lubed from a vertical to a horizontal shaft engine for my APU (auxiliary power unit). Still runs strong today after 10 years of off and on use. I don't know how your engine block looks on the inside but this info should help. From the post above sounds like you got the intake parts, so I will skip that.

I'll tell you what I did with my engine. I tore the block down. The pickup for the oil pump was on the oil sump, which is the mount for the engine to frame (vertical). With the engine shaft going horizontal would put the oil pump pickup up above the oil level on the side of the block along with the mounting surface to frame. I drilled a hole in the screen so a tube can run from the screen down to the NOW bottom of the engine. I mocked up the engine crank, rod, cam, and piston to check for clearance with the tube in place. All was good on clearance. To get the new pickup to work, I epoxied the screen with the tube in place so it doesn't move and the screen was clogged for the suction to go to the new pickup tube. I was still able to bolt it back into place for future maintenance with the original screw. I wasn't too worried about a screen on the new pickup. Then to bolt the engine to a frame I just drilled holes in the case and threaded them. Made a plate to use to bolt to the engine and red locktited the bolts to the engine since they wasn't coming back out and needed to be sealed so oil don't seep through, and another mock up to see if the bolts sticking through didn't hit anything. The engine plate then can be used to bolt engine to a frame. The engine plate was made so crankshaft was level too. This put the oil fill at the top of the block, so I drilled a hole in the oil fill cap and epoxied a dipstick in it to check oil level and marked the dipstick with a full mark. My engine held 1 quart before and guessed that on the new dipstick in the horizontal position. If your oil fill is in a bad position, then I would suggest to drill and tap a hole off to the side for a short bolt and attach a dipstick to the bolt by drilling a hole and epoxy a dipstick in that. The bolt would seal good enough for that. Everything that gets splash lubed will get splash lubed because parts are still spinning inside engine block and that part doesn't matter what position the engine block is in. The valve cover breathers will still work as long as they are on top or on the side of the engine too, but will not work right if on the bottom of the engine. Mods need to be made if the breathers end up on the bottom.

Sorry no picks, like I said, 10 years ago.
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Outlaw77
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PostSubject: Re: Oppose Briggs Vertical to horizontal   Oppose Briggs Vertical to horizontal Icon_minitimeThu Oct 25, 2018 2:13 pm

Thanks, i did pick up a horizontal base for my engine so I'm going to be tearing into it next weekend and cleaning it up inside and out and hopefully your idea will work
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