Oil leaking on MCX with Roll-over valve?

[Dimebag]

I think i understand.. I just tought it would be strange if both me and my buddy had problems with the valves on both or sleds. Im guessing there is oil in the surge tank like you are saying.

So just to get this clear, if the valve is closing like it should and there still leaks oil out then I should move the valve from the hose between the oil tank and surge tank - and move it to the vent hose from the surge tank (where the oil leaks out today..)

Thanks guys, I really appreciate all help on this. It's a shame to use such a great product the wrong way.. So i just want it to be 100%

 

[Mtnviper]

So just to get this clear, if the valve is closing like it should and there still leaks oil out then I should move the valve from the hose between the oil tank and surge tank - and move it to the vent hose from the surge tank (where the oil leaks out today..)

Yes, that is correct.
Be sure to install the valve so that the "short fitting " connects to the hose that is routed to the surge tank. This allows the safety pop-off feature to function correctly.
Also install the valve so that the solenoid end of the valve is angled up at least 45 degrees, which will allow the valve to drain quickly during normal operation.

Bill

 

[Tarzan]

Thats strange, I mean .. If it was supposed to be mounted at another location with a turbo they should have informed the customers about that?

What do you think Bill? Do you use the same mounting location both boosted and non-boosted?

Thanks guys.

Grrrr. I have also mounted mine like yours but i have not tested it yet like you. But i can say it will come oil out!!
I have to mount it like Apexpress do describe.
I havent thought about this either, i have mounted it like the instructions page says.

 

[Tarzan]

It looks Like you installed the valve per instruction.
On the MCXPRESS turbo we install the valve on the vent hose of catch tank.
Early MCX kits had a oil catch tank or new kit has tank in the intercooler with a vent hose .
If you install it as your photo there are other oil hoses going to the catch tank and then oil can leak out vent .
Hope this Helps.
Mark

Hey Mark
Can you take some pictures of the install of the valve,please on a Nytro mcxplease.
I have to se some pictures of this install since i am not so good at reading english

 

[Dimebag]

As the vent hose is pointing downwards from the surge tank, that means that oil stored in the surge tank will be running down the hose, stop at the valve - and when the valve is opened again some oil will still leak out?

And that means that even with a ROV it will not work 100% with this setup? Or am I wrong?

I understand that it will still be much better than stock..

 

[APEX XPRESS]

We are going to install one on Friday on a new build we are doing.
I will try to take some pic's
Mark

 

[Tarzan]

We are going to install one on Friday on a new build we are doing.
I will try to take some pic's
Mark

Thanks

 

[Mtnviper]

Dimebag, It's best to mount the valve as close to the tank as possible. This reduces the volume of oil that can be stored in the hose, behind the closed valve.
Of course you do not want to open the valve (re-start the sled, or turn the key off) until the sled is back upright!

Bill

 

[Dimebag]

What i mean is that the vent hose i pointing downwards, and that when mounting the valve in this hose there will be a possibility for oil to fill up the hose and leak out when the valve is opened again. But I'd take a look at it, It does'nt have to be a problem at all. I don't have the sled at home in the season so I can't verify it before the weekend. Hopefully if the road opens up again this afternoon I'll get myself over there. (It's snowing HARD..)

Thanks anyway. Great info on this guys

 

[APEX XPRESS]

This Pic shows the roll over valve pointing straight up,We had to turn valve to point to rear of sled so hood would fit better.

 

[Tarzan]

Apex xpress thank you very much, i will do this with mine
Thanks

 

[Dimebag]

That looks great. Will do this on mine also.. Did'nt have time to look at it this evening.. was way to busy blowing belts in the deep pow.

Maybe this should be in the instructions for Roll-over-valve kits, that a different placement of the valve is recommended with a turbo installed.

 

[MotoPsycho]

This Pic shows the roll over valve pointing straight up,We had to turn valve to point to rear of sled so hood would fit better.

Mark,

I assume that the MCX kit suffers from the same high crankcase pressures that a few of the other turbo kits do.

We have found in a few other kits that this case pressure causes a very high oil vapor content in the vent line, and has a tendency to expell itself from the vent during normal running.

Following this assumption, MCX came up with a wonderful solution by using a "surge tank" to collect the vapor, condense it, and allow it to gravity feed back to the oil tank.

I am guessing that you have put the ROV where you did to circumvent any "re-condensed" oil that remains in the surge tank from being expelled in the event of a roll over. The fact still remains that if there is a roll over, oil from the tank will still find it's way into the surge tank... not a problem as soon as the sled is uprighted. (due to surge tank design)

Let me know if this is the proper thinking on this matter. If so, we will make a change to our instructions for MCX users.

Thanks,
Jeff

 

[APEX XPRESS]

Hi Jeff
The MCX surge tank is a air - oil seperator .
You are correct except for oil is drained from the tank to the small vent line to valve cover.
When engine is upside down oil from valve cover will go into surge tank and then leak out surge tank vent .
This is why we install valve on end of surge tank vent.

Jeff ,nice pic of you in Snow Rider Mag when you where at the Intermountain Snow Show .
Mark

 

[Dimebag]

If so, we will make a change to our instructions for MCX users.

That would be great