Oil sight cloudy looking?

  • 4TheKZ1000
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Re: Oil sight cloudy looking?

08 Nov 2013 10:41
#612478
Beaner242 wrote:
bountyhunter wrote:
Beaner242 wrote: My nephew just mentioned riding in the rain. Which I did get caught in Monday night. For about a mile. Wasn't actually raing at the time but the roads were wet. How would it get into the case from rain though? Have Uni pods no air box.
What is the crank case breather hose connected to?

The breather tube off the case just has a small breather filter clamped to it. No hose running any where. I going to say it was from the rain the other night. It never occurred to me that it would make it into the oil. I was pretty wet by the time I hit the garage so water hitting my air filters and the crank case filter, must have been enough to get in there I guess.
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do you have a straight shot from the rear wheel to that crankcase remote breather filter?

Can water be slung from tire to that filter?

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  • Beaner242
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Re: Oil sight cloudy looking?

08 Nov 2013 10:57
#612481
yes its a wide open shot from the tire to the filter. ill either put a fender on one day, run a hose off the breather or just not ride in the rain at all LOL
1982 KZ1000K LTD Chopper

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  • 4TheKZ1000
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Re: Oil sight cloudy looking?

08 Nov 2013 11:08
#612482
Beaner242 wrote: yes its a wide open shot from the tire to the filter. ill either put a fender on one day, run a hose off the breather or just not ride in the rain at all LOL

___________________________________________________________________________________________

I would point here to your problem.

Sorry for dub post.....saw that it was stated above.

Im running the same filter on mine.....must run a filter on the breather nipple.

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  • Cynjut
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Re: Oil sight cloudy looking?

08 Nov 2013 11:59
#612496
If you leave the bike on the center stand, any water that gets in will settle at the lowest point in the engine. if that's the clutch basket, the 'whipping' action of the clutch basket will make the oil there emulsify more than the other parts of the engine. Emulsified water/oil is sticky and tends to stay close to where it's been 'made' - regular oil won't mix with it readily.

Your description of how the oil looks sounds perfectly reasonable. Without a fender between the breather and the wheel, you are likely to pick up water and fling it into the crankcase breather. Since the breather 'puffs' (in, then out, then in, then out, then repeat) it will pull the water in, then most of the way out, then more in, then a little less out, etc. It doesn't take a lot of water to emulsify your oil - it could be as little as a few tablespoons, but it's still not good.

Adding a filter adds a barrier between your wheel and the vent, thereby reducing the amount of water that can enter the crankcase. It doesn't prevent it, it just keeps water from pouring into the crankcase. It will still get aspirated into the engine as it comes off the filter, though, so it's not a cure. Note that I'm not talking about 'riding in the rain' - every time you ride through a gutter with some water in it, you're going to throw water onto the back of the engine.

The suggestion that I endorse is to add a new hose and filter to the breather and pull the end up under the tank so that it's out of the "line of fire" of the wheel. Changing the orientation of the host and filter so that they are don't pick up direct water from the tire would also work.
1977 KZ-1000 A1
1982 KZ-1000 M2 Frankenbike

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  • sbc1320
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Re: Oil sight cloudy looking?

08 Nov 2013 11:59
#612497
Patton wrote:
Stazi wrote: Put the crank case vent on a longer hose and mount it up high under the seat somewhere to protect it from the rain etc.

Or route the longer hose to exit underneath the bike.

And toss the filter, which imo is useless -- like who other than the EPA folks care about whether air is being filtered as it exits the crankcase (which is the purpose of the vent).

Good Fortune! :)

I have the filter on mine only to keep trash and critters from getting into the breather.
1980 KZ1000 LTD-B4(MK II engine) - Progressive suspension, MTC pistons, Dynojet Stage III, all wear items replaced, WFO paint scheme(1978), etc..

Past bikes- 2 1976 Kz900's, 5 1975-76 Honda CB750's, Honda 500 -4, Honda 250, Honda 125, Honda 100, Suzuki RM 250, Honda XL350, Kawasaki KLR 650, etc..

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  • bountyhunter
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Re: Oil sight cloudy looking?

08 Nov 2013 12:23
#612500
Cynjut wrote: If you leave the bike on the center stand, any water that gets in will settle at the lowest point in the engine. if that's the clutch basket, the 'whipping' action of the clutch basket will make the oil there emulsify more than the other parts of the engine. Emulsified water/oil is sticky and tends to stay close to where it's been 'made' - regular oil won't mix with it readily.

Your description of how the oil looks sounds perfectly reasonable. Without a fender between the breather and the wheel, you are likely to pick up water and fling it into the crankcase breather. Since the breather 'puffs' (in, then out, then in, then out, then repeat) it will pull the water in, then most of the way out, then more in, then a little less out, etc. It doesn't take a lot of water to emulsify your oil - it could be as little as a few tablespoons, but it's still not good.

Adding a filter adds a barrier between your wheel and the vent, thereby reducing the amount of water that can enter the crankcase. It doesn't prevent it, it just keeps water from pouring into the crankcase. It will still get aspirated into the engine as it comes off the filter, though, so it's not a cure. Note that I'm not talking about 'riding in the rain' - every time you ride through a gutter with some water in it, you're going to throw water onto the back of the engine.

The suggestion that I endorse is to add a new hose and filter to the breather and pull the end up under the tank so that it's out of the "line of fire" of the wheel. Changing the orientation of the host and filter so that they are don't pick up direct water from the tire would also work.

Either that or fabricate some kind of little plastic box with vent slots to stop the water from hitting the filter but still allow enough airflow.
1979 KZ-750 Twin

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Re: Oil sight cloudy looking?

09 Nov 2013 08:08
#612610
My sight glass is looking pretty much the same this colder morning down here. Motor sweating and condensation is all and I haven't been thru any water or rain.
1980 KZ1000 LTD-B4(MK II engine) - Progressive suspension, MTC pistons, Dynojet Stage III, all wear items replaced, WFO paint scheme(1978), etc..

Past bikes- 2 1976 Kz900's, 5 1975-76 Honda CB750's, Honda 500 -4, Honda 250, Honda 125, Honda 100, Suzuki RM 250, Honda XL350, Kawasaki KLR 650, etc..

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  • RonKZ650
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Re: Oil sight cloudy looking?

09 Nov 2013 08:17
#612612
Oil will always gradually get milky in cold weather. No way to avoid unless you ride far enough to heat the oil up and few enjoy riding much long distance in sub freezing temps. Of course a little milky is one thing, but seeing this happen overnight is something different altogether. No need for any filter on that breather nipple, just run a hose down and problem of excess water entering is no longer a problem. I ran a simple hose for 168,000 miles on the 78 KZ650 and it worked fine.
321,000 miles on KZ's that I can remember. Not going to see any more.

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  • MDawnz1
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Re: Oil sight cloudy looking?

11 Nov 2013 21:30
#612839
It's just water vapor.
Quick fix,,,,,,
Wrap the filter with duck tape BUT leave about 1" open at the front.
Duck tape even comes in colors to match your bike now a days.

Z1's do take about 30 mins to fully get up to temp and start to burn the water out.

I have the same filter, but mine lives where the chain oil tank used to.

Mike
1974 Z1a, still 903

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