Paxton Blow of valve push oil out.

[Matrix]

My blow of valve from my paxton SC push a little bit oil through the blow of valve filter. I think this oil cames from the hose which come from the valve cover and go into the paxton airbox. What can I do against this problem?

fabian

 

[Viper X]

Matrix,

Buy and install an oil "catch can". Moroso makes them. There is room to mount one on the passenger side just behind the metal crossover bar in front of the engine. Direct the line from the valve cover to the catch can. Plug the air box. This keeps the oil out of the air box and out of the Paxton. If you wait too long, you will get oil in the intake. You likely have some already. This will lean the air / fuel mixture and may cause detonation. Most of us here have to do this too.

I have one "breather" on each valve cover that is routed into my catch can. I also run the Paxton supplied PCV valve.

Hope this helps.

Dan

 

[X-Metal]

depending on what year your engine is, i can specify what to plug and bypass.
DO NOT run the crankcase breather lines to the supercharger inlet, and DO NOT run the valve cover breather line to the intake manifold.
instead, block off the fitting on the SC inlet, and plug the fiting on the intake and run individual breather filters on the valve cover/breather ports.
this will stop oil contamination from getting into your Paxton and into your intake manifold. and your Viper will stop ingesting HOT, OILY MIST into the engine, as this cause a rise in intake temps, and washes the down the combustion charge that can casue detonation too. (oil doenst burn very well)
by doing this you will stop seeing the oil mist from your blow off valve and make more power in the process.

 

[GR8_ASP]

depending on what year your engine is, i can specify what to plug and bypass.
DO NOT run the crankcase breather lines to the supercharger inlet, and DO NOT run the valve cover breather line to the intake manifold.
instead, block off the fitting on the SC inlet, and plug the fiting on the intake and run individual breather filters on the valve cover/breather ports.
this will stop oil contamination from getting into your Paxton and into your intake manifold. and your Viper will stop ingesting HOT, OILY MIST into the engine, as this cause a rise in intake temps, and washes the down the combustion charge that can casue detonation too. (oil doenst burn very well)
by doing this you will stop seeing the oil mist from your blow off valve and make more power in the process.

I would not advise this. Blocking off the PCV and venting the crankcase with breathers (or worse yet blocking the vents totally) causes an increase in crankcase pressure, adversely affects oil contamination (both water and contaminant buld-up) and if high enough causes crankcase seals to leak. If the PCV system is not working properly the first thing to check is the PCV valve to ensure the check valve is working properly and prevents charged air from entering the crankcae. If everything is installed correctly then installing a catch can on the vacuum side should help. A breather on the make-up air side (the side connected to the air cleaner) is generally not needed as that side only exhausts air during boost or excessive blow-by periods (generally when you experience piston ring vibration at high vacuum and high engine speed). But if PCV liquids are found there a catch can is a solution.

 

[X-Metal]

I would not advise this. Blocking off the PCV and venting the crankcase with breathers (or worse yet blocking the vents totally) causes an increase in crankcase pressure, adversely affects oil contamination (both water and contaminant buld-up) and if high enough causes crankcase seals to leak. If the PCV system is not working properly the first thing to check is the PCV valve to ensure the check valve is working properly and prevents charged air from entering the crankcae. If everything is installed correctly then installing a catch can on the vacuum side should help. A breather on the make-up air side (the side connected to the air cleaner) is generally not needed as that side only exhausts air during boost or excessive blow-by periods (generally when you experience piston ring vibration at high vacuum and high engine speed). But if PCV liquids are found there a catch can is a solution.

i didnt say to block off the pvc, but dont hook it up to the supercharger. it pulls too much vaccum for the stock crappy valve cover baffles, and it leads to the engine ingesting oil. catch cans are not needed on a paxton not making over 10 lbs of boost, and a filter on each valve cover will allow pressure to drop in the cases, which is what you want. we have tested crankcase pressure on viper engines, NA and boosted and we have performed this porcedure on over 50 paxton installs, and always found a drop in pressure doing this. the stock pvc valve is fine, but doenst stop oil from being pulled thru it.