oil catch tanks

15th November 2006, 21:29

whats the crack with these then was reading the spec on the vts turbo in pgti and noticed he had one but you never reallyu see them on n/a cars

what do they do and what advantages is there to fitting one and is it only really worth fitting when you go the forced induction route?

sorry if this sounds abit thick but you dont find anything out if you dont ask?

15th November 2006, 21:41

the crankcase gasses and oil vapour is vented back into the induction system meaning some of the induction system, and pipes over time get clogged with oil from the vapour that sticks to the inside walls. an oil catch tank takes the oil out the vapour thus meaning no oil vapour go's into your induction. this is especially good on turbo cars as boost/vac lines can get clogged. there is no disadvantages in fitting them and there is currently a group buy on ssc

15th November 2006, 22:58

Where i'm from its an MOT failure to have the car breathing into the atmosphere with one of those mini breather filters, so if you're not having the breather plumbed into the intake again after fitting an induction kit its a way of solving the problem.

Theres one in here the mini green filter is attached to it

15th November 2006, 23:45

I see catch tanks all the time!... for some reason VTS engines seem to spit alot of oil out of the breather, I'm told its mostly on left hand bends??... wether this is a side effect of fitting them to AX's I don't know but they are very useful in this case.... although having the breather pipe plumbed straight into the air intake is the most effective method of relieving crank pressure as a tank can cause back pressure if it gets full

16th November 2006, 11:38

i can see how a filter on a tank or a mini filter on a pipe is any different, both allow gasses back otu, the vts is sposed to have a valve on the rocker or summat that opens and closes so not to let water back into the oil when its cooling, if you have a car that spits out loads of oil, it aint really the best way of controlling it with 1 of these, its better to just sort out the breathing issues that your engine has, i read that turbo applications plum the crankcase vbreather into the boost pipes, thus pressurising the crankcase and it spits out more oil, so if it is all plumbed up correctly there should be no need for 1.
i was going to make 1 the other day but then found all the info on them and decided it was a waste of time.