Jump to content
Do Not Sell My Personal Information


Oil Breather Filter


Divszy
 Share

Recommended Posts

Looking at getting the above for my 1.0L ecoboost 100PS, but on eBay there's a fair few different sizes, which size would I need to get or does if not matter?

Link to comment
Share on other sites


Its got to fit the breather outlet - it can fit straight on the outlet or via a short length of hose normally with a connector tube, you could measure the breather (outlet or hose) on your own cat to see what diameter filter you need

There are things you should know before considering fitting an oil breather filter -

Harmful gasses like carbon monoxide can come out of the breather, you must be careful this does not make its way into the passenger cabin (eg via the vents, or other ways) you may be better fitting an oil breather catchtank and feed it back into the inlet (where it already goes) rather than releasing the breather gasses (and oil mist/ droplets) into the atmosphere, or the crancase breather outlet treated like a second exhaust, going right under the car/ away from the passenger cabin

You must know what you are doing when fitting these things, the air inlet must be blocked but the breather left open - some racing induction kits do not have breather air inlets

Even racing cars may require oil breather catchtanks to pass scrutineering, (in order to be allowed to race) some tracks will not allow cars without catchtanks on track (even for a track day or RWUB drag race)

A breather filter can get really dirty/ oily, it can dirty the engine bay

Apart from the poisonous fumes, you can get the smell of burnt oil coming into the car, or buystanders/ pedestrians (including your fanily/ mates etc) can get the smell - it can smell like an old car with a worn engine that is burning oil

My best advice is to forget about the oil breather filter and choose a nice metal oil breather catchtank instead and fit it between the oil breater outlet and engine air intake

Link to comment
Share on other sites

My question is why fit one in the first place?

  • Like 1
Link to comment
Share on other sites

My question is why fit one in the first place?

Why would you need one tho?

Sent from my iPhone using Ford OC mobile app

Link to comment
Share on other sites


They are used to vent the crankcase due to blow-by, if you have a highly tuned race engine you would expect more blow-by and a high crankcase pressure and high levels of oils fumes.

For old duffers like me who remember pre-emission days, engines had a road draft tube where all the muck from the engine would drip onto the road and the fumes into the atmosphere.

Now the fumes are burnt in the engine and all the liquid muck drops back into the engine. Not much point fitting one to a modern engine as you bypass the PCV system and possibly upset the engine management system.

As FOCA said above a catch tank is a better proposition but again you already have a system to catch the liquid muck.

Link to comment
Share on other sites

Ok i get you, where as now a days its the little black filter inside the air filter box right? That gets oily some times

Sent from my iPhone using Ford OC mobile app

Link to comment
Share on other sites

Cheers, do you have to clean it tho?

Sent from my iPhone using Ford OC mobile app

Link to comment
Share on other sites

Generally no, my last Mondeo was a bit wet with oil after 80,000 miles but it was not blocked.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share




×
×
  • Create New...

Forums


News


Membership