KDX'sforever
Member
- Jan 19, 2008
- 4
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2 strokes don't have oil in the crank case thats why you mix it with gas. The oil is in the gear box is separate so it cant come out a "crank case vent" :uh:BigRedAF said:your paranoid...
To much oil in the crank case and it will come out of the crank case vent.
Man, you should be a politician, that double speak was brilliant, an uncanny grasp on the finesse elements of two stokeology coupled with a hint of four stroke genius.BigRedAF said:OK ride Junkster,
You caught my typo. It's clear that he said 10W40 and referred to his clutch. It is also clear that I referred to the rubber hose that pukes out the tranny oil when you over fill it. Thanks for the correction, I wouldn't want for him to think he was on a four stroke KDX. I believe that would be called a KLR.
He also said "crank case" but I knew what he was talking about and so does everyone else. The two case half's that contain the crank don't vent from the crank area anyway. If it did it would be a vacuum leak and we would be talking about a left side crank seal. :nener:
Fair enough I can understand a typo. Could you please elaborate on this hose that pukes tranny fluid when over filled? could this possibly be a typo too or are you mixing this up with a crankcase breather on your harleys or your 4 strokes?BigRedAF said:I'll take that as a compliment as I'm sure it was intended that way.
In my line of work CYA is required almost daily. I just try to answer stuff with as few words as I can, unfortunately I missed the vocabulary on this one. I promise to improve in the future.
ridejunky said:Fair enough I can understand a typo. Could you please elaborate on this hose that pukes tranny fluid when over filled? could this possibly be a typo too or are you mixing this up with a crankcase breather on your Harleys or your 4 strokes?
Ive never seen a 2 stroke with a tranny fliud puking hose or any hose from the clutch /tranny for that mater, just looking for clarity. 4 strokes such as the bikes you have in your bio need crank vents as well as harleys. can this be the source of confusion?BigRedAF said:OK, just went out in the garage and both MX bikes have a black hose coming out of the top of the cases behind the carburetor.
In the old days they were routed below with the carb drain hoses but now days they're routed into the airbox. By the way, both Harleys are vented from the valve covers to the back of the air cleaner assembly.
If your KDX doesn't have a case vent it might be to prevent water from getting in the cases when you guys go swamping...
Now go and try to bust someone balz. :nener:
BigRedAF said:INDY
Your the man!
I was planning a trip to the Kwacker shop tomorrow so I could take a pic of a hose on a KDX, you saved me some gas. Lunch is on me...
Please do that, show the O.P. where his trans fluid on his kdx will puke out when he over fills it so he knows there is nothing to be paranoid about.BigRedAF said:No...
My 500 has one and so does the 450. The Hogs vent from the valve covers into the air filter backing plate.
Perhaps the overflow phrase is wrong, it's just a vent. I suppose if it was upside down it would puke out of the hose.
If this goes much further I'll take a pic and post it for you...
Does it? are you sure thats a tranny vent hose?BigRedAF said:O.P. ???
I'll work on it in my spare time. I think the pic above shows it all!
ridejunky said:Does it? are you sure thats a tranny vent hose?
ridejunky said:Does it? are you sure thats a tranny vent hose?
I think there is some miss communication, the hose that comes of the fitting you are reffering to runs up under the seat. I have overfilled my tranny more than once and never had oil purging from it. I'm trying to understand where the overflow hose is that will puke oil when the tranny is over filled is located. My harley used to puke oil from the crankcase breather vent when left standing for sometime because the oil would flow out of the bag past the check valve and pool in the crankcase. Since none of the bikes in question share oil with the tranny and crank, how and where does this overfill purge as you suggested?BigRedAF said:I took extra time to check your profile and research your ride to help you out.
It just so happens that the same part numbers cover your 1998 KDX220. Here's a link to your case microfiche diagram.
http://webservices.motorsportdealers.com/parts/partImages/KUS/2/C17/C1761/E1411.Gif
I hope this helps you find your hose tonight. :laugh:
ridejunky said:I think there is some miss communication, the hose that comes of the fitting you are reffering to runs up under the seat. I have overfilled my tranny more than once and never had oil purging from it. I'm trying to understand where the overflow hose is that will puke oil when the tranny is over filled is located. My harley used to puke oil from the crankcase breather vent when left standing for sometime because the oil would flow out of the bag past the check valve and pool in the crankcase. Since none of the bikes in question share oil with the tranny and crank, how and where does this overfill purge as you suggested?
Mine was really old(75) and notorious for this problem. behind the oil pressure sending unit was a check valve(ball) and the seat would become worn so the oil would drain past and into the crank case. Fixing was a hassle. I found that starting it up once a week would recirculate the oil back into the bag. if left to sit starting, was laborious and oil (alot) would blow out of the vent tube behind the generator(yes it was that archaic) onto the garage floor.BigRedAF said:As noted by others and suggested by me. Your hose routing is to prevent water from entering your cases when or if you cross a creek / deep water while doing what KDX's are intended to do. MX bikes just vent this hose to the back of the engine and down or into the airbox depending on manufacturer.
Since all bikes do this I assumed that the KDX did as well. If you over fill most bikes and ride them tranny oil will come out of the vent hose. Now that I know the routing of your bike I understand why oil doesn't come out, your vent exits higher than your fill hole.
The O.P. asked if over filling would cause hard starting, the answer is no. This should wrap things up.
To bad your Harley dropped oil, the newer Twin Cam design is holding up well. This design vents the crank via both valve covers to the air box backing plate so the fumes go back through the combustion process. I imagine this is a EPA issue. This configuration also causes a slight vacuum and relieves internal pressure helping to prevent leaky gaskets.
I was ready to post and had to make sure that there is no other form of crank vent on the Harley so we wouldn't have to travel down that road together. Even though I have installed five big bore kits, three sets of cams and one 103 stroker crank on mine and several friends bikes in the past few months your persistence forced my to go out in the garage and take a look. I'm happy to say that the two vents come from the rocker box / valve cover area as I mentioned previously. The tranny does have a 90 degree elbow and rubber vent hose coming out of the top cover.
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