Oil air separator project.

[trevorl1]

As you guys have seen Im interested in trying to re route the vent line from the separator to the mag cover like the MPI turbo kit. Im in Canada so I cant see spending about 60$+ to order the kit from MPI and it not work.

Ive tried everywhere to find a fitting that fits in the plastic plug hole with no luck.
Im now thinking of removing the cover and drilling and tapping the hole to a size that I can find a 90 degree elbow.

The way I see it is if it works for the mpi turbo there should be no reason that it wouldn't work on a NA sled.

How much air comes out of that line and could there be any negative effects on the engine?

 

[cannondale27]

As you guys have seen Im interested in trying to re route the vent line from the separator to the mag cover like the MPI turbo kit. Im in Canada so I cant see spending about 60$+ to order the kit from MPI and it not work.

Ive tried everywhere to find a fitting that fits in the plastic plug hole with no luck.
Im now thinking of removing the cover and drilling and tapping the hole to a size that I can find a 90 degree elbow.

The way I see it is if it works for the mpi turbo there should be no reason that it wouldn't work on a NA sled.

How much air comes out of that line and could there be any negative effects on the engine?

Not sure effect it will have. What about just going to the small plug?

 

[yamahaguy]

Not sure effect it will have. What about just going to the small plug?

The smaller hole in the mag cover has special thread also, this is why MPI makes this adapter.

As you guys have seen Im interested in trying to re route the vent line from the separator to the mag cover like the MPI turbo kit. Im in Canada so I cant see spending about 60$+ to order the kit from MPI and it not work.

Ive tried everywhere to find a fitting that fits in the plastic plug hole with no luck.
Im now thinking of removing the cover and drilling and tapping the hole to a size that I can find a 90 degree elbow.

The way I see it is if it works for the mpi turbo there should be no reason that it wouldn't work on a NA sled.

How much air comes out of that line and could there be any negative effects on the engine?

I don't see why this wont work for your NA sled. Plumbing is the same for turbo or NA and the only difference is which side of the sled the air/oil is mounted on. When your plumbed into the mag cover you remove the chance of oil tank head pressure pushing oil backwards out the drain line and filling your air oil separator when your sleds on its side.

 

[cannondale27]

I agree. If I did it I would spend the $ to get those fittings MPI has. I am sure they are designed to flow alot. Might not get that with a off the shelf fitting.

 

[stingray719]

Be careful, oil doesn't seem to mind smooth 45 degree fittings but any 90 degree fittings drop oil pressure in a big way. Believe me or not but found out when building race car remote coolers. I know you are working on a return, but same principle applies

 

[red6rubicon]

Isnt it just AN thread?

 

[yamahaguy]

Isnt it just AN thread?

It not a AN type fitting. I don't think MPI would have put the time into engineering and machining a fitting if it was off the shelf. With entire installation kit they tend to use off the shelf fitting when they can.

 

[trevorl1]

It's a 14mm x 1.5 thread.

 

[cannondale27]

Yes and big one is a 32mm x 1.5 thread.

 

[Mtnviper]

For those of you who are relocating the separator drain and are running a roll over valve, you will also need to move your ROV valve from the stock location to the aluminum tube that runs above the exhaust heat shield. I have additional pic's and information on the web site at http://fourstrokesolutionsllc.webs.com/apps/photos/album?albumid=15825200

Relocating the separator drain changes the air flow characteristics of the breather system. By relocating the ROV valve when performing the separator drain mod, it will allow the Quick Prime function to operate as designed.

Bill