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Old 05-18-2019, 07:29 PM
zbillz zbillz is online now
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Default Another engine tilt oil capacity question

Hi all,
I just changed the oil in a briggs 5hp motor. I found the user manual online and it calls for 20 oz of oil. I drained the oil and put 20 oz of new oil in while it was on a level surface. I reinstalled the motor on its 15 degree mount. When I open the oifiller plug, oil is just pouring out.
While driving the kart oil is just blowing out of the catch can.
I opened the oil filler plug until oil stopped coming out. Oil is not coming out of the catch can anymore while driving .
I'm guessing I maybe have 10 -12 oz of oil in the motor.
How do I know if I have enough oil in the motor?
Does the oil capacity change when the motor is mounted tilted?
Thanks!!
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Old 05-19-2019, 08:31 AM
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5 HP Briggs have two filler plugs, so I would recommend using the higher one. Better to have too much oil than too little!
But if someone says something different, listen to them.
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Old 05-19-2019, 08:37 AM
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When I raced karts with 5hp Briggs motors we had the engines mounted on a 15 degree angle and we always put in 16 oz of oil. We were running methanol so we changed oil after every race. We never really had a way to check oil level in the engine because we were constantly changing the oil. I guess you could make a dipstick and check it from the high side (the side with the carb and exhaust) has the 5 hp motors we ran had fill ports in both sides of the side cover.
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Old 05-19-2019, 04:16 PM
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The racing guys say to use 14-15 ounces (16 sounds good to me) of oil when using the 15 degree motor mount.

I guess it's plenty enough oil for the oil dipper, and enough in turns when all the oil in the sump sloshes right and then sloshes left momentarily (and all around).

If you pour in a precise 14-16 ounces, measured with a measuring cup, you could fab up a dip stick (wooden dowel, stiff piece of steel or aluminum, etc). Stick it all the way in until it bottoms out on the bottom of the sump (in a consistent area in the block), note the spot on the stick where the oil is highest and mark it with a notch or a Sharpie. And there you go.
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Old 05-19-2019, 05:22 PM
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I guess I will put in a few more ounces to get to 15. The only oil filler cap is on the front side of the motor (tilted down) will have to fill with the front end of the kart lifted. Still will be Impossible to check the oil level with motor on tilt.
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Old 05-19-2019, 06:20 PM
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Let's see some pics of your setup....

It's only got ONE filler cap??
Might wanna invest in and ARC sidecover with the two(or three! on the Blockzilla cover) oil filler caps.
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Old 05-19-2019, 07:57 PM
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Front and rear pictures attached .
If I open the filler cap with anymore than 10 or 12 ounces of oil inside , oil will pour out as soon as I open. I dont see a filler cap on back unless its buried behind the gas tank?
Attached Thumbnails
20190519_204253.jpg   20190519_204411.jpg  

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Old 05-19-2019, 08:43 PM
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The other oil filler cap should be directly opposite the first one. I guess it's under your TAV.

You know, of course that while the TAV gives you a quicker start off the line, it robs you of your top end speed. They don't race with them you know....they use just a plain ol' (racing) clutch.
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Old 05-19-2019, 09:04 PM
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Will have to look a little closer tomorrow behind the TC. If it is there will still have to fill from front with kart up.
Really like the TAV. My son just using it in the culdesac and street in front of the house. Really quick acceleration and getting 28 mph top speed with 12 tooth TC and 55 sprocket with 11 inch tires. He's bugging me to get it to go faster.
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