Oil leaking or blowback even when properly filled

[KAOS]

Stevo. I'm using heater hose, just stick with it mate and keep an eye on it.  My conclusion is people are overthinking the oil issue. I reckon the pcv outlet is too close to the impeller and it is getting sucked out.

I have blocked off everything on the snorkel so only fresh air is getting in I  went for a ride today and not even a mist in the can.

Have you cleaned out your plenum, blocked off pair system and got rid of the purge valve?? Take off the snorkel, spray degreaser in, hose out and let it dry, no need to crack it apart and change gasket now. 

[Stevoiscool]

I had the ram air cleaned and resealed right before installing the catch can since it was spitting out oil previously. Haven't done the pair block and not really sure about the purge valve on my bike. I have an SLR ECU flash, so not sure if that disabled some of those. Going to do the blow off valve mod soon so I can hear the hissing sound.

[KAOS]

Excellent 👌 Make sure you really want the bov mod cos to me it's really annoying and sounds sh#t (My opinion).

My mate put a bov on his h2 and is gonna take it off cos it hisses all the time and is a constant annoyance. Good luck man.

[Stevoiscool]

Originally Posted by KAOS

Excellent 👌 Make sure you really want the bov mod cos to me it's really annoying and sounds sh#t (My opinion).

My mate put a bov on his h2 and is gonna take it off cos it hisses all the time and is a constant annoyance. Good luck man.

I disconnected the hose from the air intake on the left side of the bike and capped it off (using a can tip till I get my silicone cap lol) and went for a ride with the hose still attached just to see if I'd like it before doing the work to lift the tank and remove the rest of hose.



 I couldn't hear the hissing sound at all during my ride, so definitely need to remove the whole thing for what I'm looking for. The inside of the hose was slightly damp with some oil vapor so maybe worthwhile to just run it unhooked and capped off even if you aren't looking for the noise in order to avoid the vapor and hot air going back into the intake. I'll test it with it fully removed but at the very least I'm going to leave it unhooked from the intake so oil won't be coming in through anywhere.

[KAOS]

  Sounds good man, seems like your all over it Stevo! Doing research before yo dive in

[motozee]

Just want to point out, I know we love to come up with cool ideas to solve problems, but the issue here is that when the bike is new, there is quite a bit more blowback past the rings until they seal, which is why the airbox gets this oil vapor.

With most bikes we never notice it because the airbox is up under the tank and the excess just drains into the little reservoir.

With the Z and synthetic oil some seeps out.

Now as I come up on 14,000 miles it's just barely a film on the bottom that I can see on my fingers. There is zero significant blowback after the rings are broken in.

Give it some time. Go ride.

[Stevoiscool]

Originally Posted by motozee

Just want to point out, I know we love to come up with cool ideas to solve problems, but the issue here is that when the bike is new, there is quite a bit more blowback past the rings until they seal, which is why the airbox gets this oil vapor.

With most bikes we never notice it because the airbox is up under the tank and the excess just drains into the little reservoir.

With the Z and synthetic oil some seeps out.

Now as I come up on 14,000 miles it's just barely a film on the bottom that I can see on my fingers. There is zero significant blowback after the rings are broken in.

Give it some time. Go ride.

I hope that's the case mine has little under 4500 miles on it (1500) from me since I bought it used.

I also suspect it may have something to do with how hard I'm riding the bike with my SLR tune and having the redline raised to 13200 rpm. I'm geared down to a 43 tooth in the back and ride the bike to redline often in gears 3-5. So most of the "blow back" is likely happening in the rpm range a lot of owners don't reach, especially factory tuning.

Even with the catch can I did feel a tiny bit of oil residue in the ram air seem but nothing significant. I caught this much stuff in 3 rides some I'm happy to not have it running through supercharger.

My average boost temperatures seem to have dropped by about 10 degrees and before whenever I would finish riding I could feel the heat from the oil pooling at the bottom side of the ram air before the supercharger when I put my hand against it. Also was noticing a performance drop at high rpm before this modification, when oil pooling and dripping out, so for me the modification was worth while.

[KAOS]

Stick with it Stevo, people that doubt probably pay for a service  I have absolutely no oil in my catch can, getting it tuned in a few days, I ride fairly hard, bike only has 2300 KMS.

Oil issue seems to be resolved 

[ESR]

Originally Posted by motozee

Just want to point out, I know we love to come up with cool ideas to solve problems, but the issue here is that when the bike is new, there is quite a bit more blowback past the rings until they seal, which is why the airbox gets this oil vapor.

With most bikes we never notice it because the airbox is up under the tank and the excess just drains into the little reservoir.

With the Z and synthetic oil some seeps out.

Now as I come up on 14,000 miles it's just barely a film on the bottom that I can see on my fingers. There is zero significant blowback after the rings are broken in.

Give it some time. Go ride.

Can only say your explanation is correct.

Like many owners, I experienced oil leaking from the lower side of the air channel, and also a quite fast filling original catch can, from new, some 2 years ago.
I followed the crowd, and opted too for an in house constructed engine carter breather.
Result was roughly about 60-70pct. less oil coming into the catch can and air channel, so for me it worked at that time to a certain degree.
This was done around 1500 miles of driving, around 6-7.000 miles I noticed almost nothing but a small film inside the air duct and almost nothing in the plastic bottle.....
So I removed the home made breather, to see what future brings,..... and after some 3.000 miles more, with non tuned engine, there stays only a microscopic film in the air duct and some drops into the original catch can.
When controlling inside the airbox,.......same, just a bit oil film,....negligible to my opinion....

Conclusion: much hassle about nothing, km's or miles or whatever, will solve everything....
However, no idea what an uprated or faster spinning compressor will do.

[KAOS]

Originally Posted by Stevoiscool

I hope that's the case mine has little under 4500 miles on it (1500) from me since I bought it used.

I also suspect it may have something to do with how hard I'm riding the bike with my SLR tune and having the redline raised to 13200 rpm. I'm geared down to a 43 tooth in the back and ride the bike to redline often in gears 3-5. So most of the "blow back" is likely happening in the rpm range a lot of owners don't reach, especially factory tuning.

Even with the catch can I did feel a tiny bit of oil residue in the ram air seem but nothing significant. I caught this much stuff in 3 rides some I'm happy to not have it running through supercharger.

My average boost temperatures seem to have dropped by about 10 degrees and before whenever I would finish riding I could feel the heat from the oil pooling at the bottom side of the ram air before the supercharger when I put my hand against it. Also was noticing a performance drop at high rpm before this modification, when oil pooling and dripping out, so for me the modification was worth while.

Stevo. Did you go with steel or Alloy rear sprocket, which brand (Supasprox or Vortex)?