More ROV installation pic's added to the website!

[Mtnviper]

I just added some pic's of installations for MCX turbo Viper's!
Lots of pic's here http://fourstrokesolutionsllc.webs.com/apps/photos/
MCX Viper pic's are in the MCX turbo Viper gallery.
http://fourstrokesolutionsllc.webs.com/xf7000srviperrovkits.htm

Bill

 

[MCXPRESS USA]

Hi Bill
I would think oil would still leak out the valve cover vent hose if valve is located in green box location with the MCX Turbo?
Blue box area looks best to me
Mark
http://fourstrokesolutionsllc.webs.com/apps/photos/photo?photoid=196954284

 

[Mtnviper]

Hi Mark,

Normally we've found that very little or no oil leaks out of the valve cover vent. This is primarily because of the design of the valve cover as well as the size of the vent itself. Additionally there is a much smaller amount of oil in the engine when compared to the capacity of the oil tank. Traditionally the valve cover vent has been left as is and vented to the air box on stock sleds or vented to the air intake or atmosphere (filtered or unfiltered) on most boosted sleds.

There are a couple of advantages to mounting the valve at the separator instead of down by the turbo inlet in the Blue area.With the shut off valve at the top of the separator box, oil is stopped closer to the source of the leak.
When the shut off valve is mounted down low at the end of the breather tube, oil can collect in the 5/8" diameter tube behind the closed valve. Then when the sled is rolled back up right, the valve becomes the "low point" in the system. Once the valve is opened again to start the engine, the remaining trapped oil in the 5/8" line can drain in to the turbo inlet. I've seen this before on the 1100 turbo Cats which have a fairly long breather hose. Unfortunately on those sleds the only available space to mount the valve is at the end of the breather hose!

By mounting the shut off valve before the valve cover breather, it allows the crankcase to be vented to the atmosphere during re-prime mode. During oil pump re-prime mode, the breather to the tank is closed using the ROV shut off valve, while at the same time the valve cover is vented. This allows a certain amount of pressure differential to occur between the tank and crankcase, which allows the oil pump to re-prime as quickly as possible!


Bill

 

[MCXPRESS USA]

Bill
Sounds like you have done your homework
Sign Me Up,I want one
406-782-2318

 

[viperdudese]

I bought mine from the OFT via a Swedish company but mounted it after your description when I thought that your solution was better. They are basically the same stuff and they have worked well to have my OFTkit mounted as you have shown. Me sled has been upside down many times and still no leakage, just a thin layer of oil on the MCXpress airintake filter.

 

[Martens199]

Had three new vipers up to the mountains this past week, lots of oil problems. Oil flows and fills the turbo and air to air very quick. Buddy even had oil pouring out his intake sock/filter while on its side. Horrible design, hope this will help!

 

[Mtnviper]

Yes it will help anytime the engine is off and the sled is on it's side. If it's burping oil out through the breather while your carving, then I would check the oil level to make sure that it's not over-filled. Some guys may not know of this, but the oil level should be checked with engine at full operating temperature. (when the cooling fan comes on)

Also it's worth noting that our ROV kits have evolved over the past couple of years, with the most significant advancement being the Roll Over Valve Control Module or ROVCM.
By using pulse width modulation output (variable voltage) from the ROVCM, we are able to make the shut off valve close faster/stronger then what was possible before when using battery voltage alone. The added bonus is that the variable voltage output also extends the life expectancy of the valve as well as greatly reducing the need for valve cleaning.

Bill