23-09-2013, 09:39 PM
I'm assuming you've not placed the exit of the catch tank back on the inlet?
They're positive crankcase ventilation engines - i.e. they generally require a bit of a vacuum to get the gasses out - which is why as standard it goes back into the inlet - however, if you put a catch tank on, I'd guess you've simply got the outlet of the catch tank not connected to anything - which causes more restriction to the crankcase - the easiest option especially when running higher boost pressure than standard is to pop up the dipstick since the catch tank is restrictive... Usually the typical toyosport catch tanks you get off ebay have the teenyest little ports on top - when you're ramming 30lbs of boost down the inlet, they do leak past the rings a fair old bit - they're just not designed for (relatively) high boost engines...
Basically unless you positively vent the crankcase, my usual solution is a pipe pointing straight down over the back of the engine the world is your catch tank!
Just make sure ALSO - the check valve (black plastic round UFO thing) is the right way round, seen that one before where it's the wrong way round and is blocking the shit out the inlet.
They're positive crankcase ventilation engines - i.e. they generally require a bit of a vacuum to get the gasses out - which is why as standard it goes back into the inlet - however, if you put a catch tank on, I'd guess you've simply got the outlet of the catch tank not connected to anything - which causes more restriction to the crankcase - the easiest option especially when running higher boost pressure than standard is to pop up the dipstick since the catch tank is restrictive... Usually the typical toyosport catch tanks you get off ebay have the teenyest little ports on top - when you're ramming 30lbs of boost down the inlet, they do leak past the rings a fair old bit - they're just not designed for (relatively) high boost engines...
Basically unless you positively vent the crankcase, my usual solution is a pipe pointing straight down over the back of the engine the world is your catch tank!
Just make sure ALSO - the check valve (black plastic round UFO thing) is the right way round, seen that one before where it's the wrong way round and is blocking the shit out the inlet.
