What do you reckon on this oil catcher

**andsaw** · 16th November 2009, 18:45

Saw this, 250527579764 on ebay, what do people reckon this will help or not or is it a gimmick, i have seen something like this on top fuel dragsters but theirs are massive compared to above.

**rushy** · 16th November 2009, 18:52

Link

If you fit it properly then yes they are better for your engine. You need to fit this in between your cam breather in the intake pipe. All that crud you see in your TB is from the cam breather, this will stop all the crud and still burn off the vapours.

You wont get any performance gains but will help keep the intake cleaner.

**andsaw** · 16th November 2009, 18:59

sorry whats TB, so the crud thats collected, does that damage engines then.

**Deztroyer** · 16th November 2009, 19:42

throttle body

**Jezzy** · 16th November 2009, 19:51

Originally Posted by deztroyer

throttle body

Not TurBo then?

**rushy** · 16th November 2009, 22:14

Originally Posted by andsaw

sorry whats TB, so the crud thats collected, does that damage engines then.

It just clogs it up mate as in the TB gets covered in crud and the intake manifold gets a good coating as well. The catch tank just helps keep it clean, there supposed to be very good for forced induction applications.

**Birchy63** · 17th November 2009, 10:03

Expect around 5% increase in BHP... Seriously, it's a very under rated mod for any car.

They stop the engine having to burn up oil vapour, oil vapour diluting your fuel/air obviously reduces power.
Oil vapour sticks to your inlet manifold and in cars with idle valves it will eventually bung them up with black sticky stuff (Peugeot/Citroen have this issue). It also leaves a residue on your inlet valves which could lead to valve sticking.
(which if I recall correctly was a problem on the early VX 2.0 16v engines?)

So why are they fitted? emissions!
It's illegal to vent pure oil vapour into the atmosphere. Your car will probably fail its MOT on emissions because the tester will be looking for an amount of residual oil vapour in the exhaust gases and with a catch tank you'll have no oil vapour in the exhaust gas at all unless your piston rings are ******ed.

Manufacturers really don't care about the damage that oil vapour can do, because cars aren't designed to last long enough for it to become a problem and once outside warranty period it's fair game.

**fikse** · 17th November 2009, 17:40

I have made a kindeof oiltrap on mine DTi. Have a look here

Even if I have removed the trap, and only use the extended hose, it is enough to prevent oil to be sucked into the inlet. So, my experience is you dont need the trap, but its enough to extend the hose. Well, at the 2.2DTi at least

BUT, the inlet is not dry yet! The turbo is leaking. Very small amount, and after my Opel garage told me, completely normal, but its enough to still make the inlet a bit sticky, unfortunately.
Now, if you look at the post I linked to, I have also made a gasket to block most of the EGRvalve. I have also disabled the throttle blade completely. Together, this is very effective. At least so far

No fault codes, no hickups, no more loss of response/cut-outs from engine. Just pure fun driving

**rushy** · 17th November 2009, 20:52

Originally Posted by Birchy63

Expect around 5% increase in BHP... Seriously, it's a very under rated mod for any car.

They stop the engine having to burn up oil vapour, oil vapour diluting your fuel/air obviously reduces power.
Oil vapour sticks to your inlet manifold and in cars with idle valves it will eventually bung them up with black sticky stuff (Peugeot/Citroen have this issue). It also leaves a residue on your inlet valves which could lead to valve sticking.
(which if I recall correctly was a problem on the early VX 2.0 16v engines?)

So why are they fitted? emissions!
It's illegal to vent pure oil vapour into the atmosphere. Your car will probably fail its MOT on emissions because the tester will be looking for an amount of residual oil vapour in the exhaust gases and with a catch tank you'll have no oil vapour in the exhaust gas at all unless your piston rings are ******ed.

Manufacturers really don't care about the damage that oil vapour can do, because cars aren't designed to last long enough for it to become a problem and once outside warranty period it's fair game.

If fitted correctly gasses are still drawn into the intake, most just fit a filter on the end of the catch tank, but you need to fit it back into the intake to give the vac but also to burn of the gases.