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Dub Siren

Member
Hi Folks,

Apologies if questions seem ridiculous I’m rather new to this..

This pipe has a small amount of smoke coming out which I have noticed after it has come off the air filter. Is this smoke bad/ what problem does this indicate?

In addition it runs from the small black device which is not a turbo as I would have expected. In fact on looking I can’t see anything that looks like a turbo in the engine bay. -If anyone could identify or shed light that would be amazing - thanks!

I had noticed black tar like material on changing air filter which would make sense given the small amount of smoke that must have been going in.
😊🌲
 

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The pipe is the engine breather, it is normaly connected to the air pipe or air filter on earier 200tdi and 19j models.
On later 300tdi the pipe attached to the turbo inlet pipe at the back of the engine.
The small black device is a 'cyclone breather'.
Part # ERR1471
They can get clogged up if your engine is 'breathing heavily'.
It is designed to stop oil and black reek from clogging up your air filter.
Yours looks like it needs to be changed...

Cyclone Breather - 200Tdi - Find Land Rover parts at LR Workshop

View the Land Rover parts diagram for Cyclone Breather - 200Tdi
www.lrworkshop.com www.lrworkshop.com

Your turbo is that rusty looking lump in your 4th picture on the right side of the engine.
I has that elephants trunk (air inlet) on one side and the exhaust outlet on the other.
The small oval plate with the two bolts is normally where the EGR sits signifying that the EGR has been removed.
The pipe that sticks out and turns 90 degrees to the front is the compressed (turbo charged) air that goes through the intercooler (in at the bottom out at the top) which then goes via the pipe with the red dot on it, into the inlet manifold.

@Dub Siren buy this ... Amazon product
 
Yes! Thanks a lot for that. That is such a big help- really appreciate such a detailed answer. Much appreciated! Will order that cyclone breather now. Cheers!!
 
Dub Siren said:
Hi Folks,

Apologies if questions seem ridiculous I’m rather new to this..

This pipe has a small amount of smoke coming out which I have noticed after it has come off the air filter. Is this smoke bad/ what problem does this indicate?

In addition it runs from the small black device which is not a turbo as I would have expected. In fact on looking I can’t see anything that looks like a turbo in the engine bay. -If anyone could identify or shed light that would be amazing - thanks!

I had noticed black tar like material on changing air filter which would make sense given the small amount of smoke that must have been going in.
😊🌲
Click to expand...
Is there much back pressure chuffing out of the oil filler cap? Your engine may be breathing heavily, which will indicate excessive wear and hence the oily fumes going down that pipe. If not, then all should be good. The cyclone causes that oily gas to spin around inside the filter, this centrifuge effect causes the oil in the fumes to stick to the side of the 'filter' and trickle down in to the sump, through the tube coming out of the bottom of it. The oil free gas then travels through the other tube and back in to the air induction system. It's called a filter, but there is no filter material inside, just a plastic guide that causes the gas to spin. Out of curiosity, I cut one up about nine years ago.
 
Al2O3 said:
Is there much back pressure chuffing out of the oil filler cap? Your engine may be breathing heavily, which will indicate excessive wear and hence the oily fumes going down that pipe. If not, then all should be good. The cyclone causes that oily gas to spin around inside the filter, this centrifuge effect causes the oil in the fumes to stick to the side of the 'filter' and trickle down in to the sump, through the tube coming out of the bottom of it. The oil free gas then travels through the other tube and back in to the air induction system. It's called a filter, but there is no filter material inside, just a plastic guide that causes the gas to spin. Out of curiosity, I cut one up about nine years ago.
Click to expand...
Ah thanks a lot! There is no pressure/or steam/smoke escaping from the oil filler cap when its on and I haven't had it running with that off. There isn't a huge amount os smoke coming from the pipe from the cyclone but enough to notice. By breathing heavily does that mean it's trying to take in so much air that oil gets whipped away from the engine?

Very interestign what you say about the cyclone - that makes a lot of sense. I may do the same when i swap mine over.

Is excessive wear due to heavy breathing likely to be any particular part or just general wear? How much of a problem is this likely to be.

Thanks again for the help it is so useful!
 
Dub Siren said:
Ah thanks a lot! There is no pressure/or steam/smoke escaping from the oil filler cap when its on and I haven't had it running with that off. There isn't a huge amount os smoke coming from the pipe from the cyclone but enough to notice. By breathing heavily does that mean it's trying to take in so much air that oil gets whipped away from the engine?

Very interestign what you say about the cyclone - that makes a lot of sense. I may do the same when i swap mine over.

Is excessive wear due to heavy breathing likely to be any particular part or just general wear? How much of a problem is this likely to be.

Thanks again for the help it is so useful!
Click to expand...
You need to take the oil filler cap off, and start the engine. Don't run it for long, just enough to see if there is chuffing, or loads of vapour blasting out. Useful guide to the condition of the engine, and chuffing will indicate a blown head gasket.
 
Nice one thanks. I have kept it not attached and left it to atmosphere as suggested.

There is not any smoke or vapour or chuffing coming from the engine oil inlet when I take it off which is good news!

Where does the cyclone take the oily gas from? Is it another form or exhaust system?

I am getting smoke from the exhaust which I will investigate further inline with other threads in this issue.
 
Dub Siren said:
Nice one thanks. I have kept it not attached and left it to atmosphere as suggested.

There is not any smoke or vapour or chuffing coming from the engine oil inlet when I take it off which is good news!

Where does the cyclone take the oily gas from? Is it another form or exhaust system?

I am getting smoke from the exhaust which I will investigate further inline with other threads in this issue.
Click to expand...
The cyclone is part of the crankcase breather. For decades, Landrover crankcases ran open to atmosphere, like yours is now.
Then it was decided that crankcase emissions were harmful to the environment, so various systems were introduced by which the engine ate it's own emissions, and filtered or condensed them in some way.
This may have benefits to the environment, but has none to the engine, so if in doubt, play it safe and run it open.
 
To save me adding another thread and hassling everyone I wonder if any of you may know this - which type and section of exhaust am I missing.

The Land Rover is 1985 but with a seemingly disco 300tdi in and is missing half of the exhaust. Not sure which one to choose am I best to get a chassis number and call a dealer or is it obvious what I need?

Any recommendations would be great. Thanks.
 

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Dub Siren said:
Nice one thanks. I have kept it not attached and left it to atmosphere as suggested.

There is not any smoke or vapour or chuffing coming from the engine oil inlet when I take it off which is good news!

Where does the cyclone take the oily gas from? Is it another form or exhaust system?

I am getting smoke from the exhaust which I will investigate further inline with other threads in this issue.
Click to expand...
When an engine's piston rings and cylinder bores are worn you can get combustion gasses getting past the rings and in to the crankcase. The crankcase is the bottom part of the engine where all of the oil returns to, the crankshaft is spinning around in here connected to the pistons. This gas pressurises the crankcase and this pressure also makes it's way up through the cylinder head and in to the rocker cover - this is the aluminium top of the engine that has the yellow oil filler cap on it. This escaping combustion gas is known as 'blow by' and your engine is said to be 'breathing heavily' when this pressure is chuffing out of the oil filler cap hole when the engine is running. If your engine isn't doing the chuffing thing, then that is good news.
Even when a healthy engine is running normally there is a certain amount of pressure created, air in the sump gets hot and expands, the oil gets hot and you have pistons thrashing up and down causing displacement within the crankcase. There is a pipe from the rocker cover that goes to your air inlet pipe to relieve this small amount of pressure. With all of the heat and your crankshaft, pistons etc thrashing about, some of the oil gets atomised and creates an oily vapour. To stop this oil being carried through that vent pipe and in to your air intake, they have put in the cyclone breather to centrifuge that oil out. Any oil 'spun' out (condensed) drops out through the bottom of the cyclone via a pipe on the bottom and trickles down to join the rest of the oil in the sump.
If your engine is ok then the amount of pressure created is small and the amount of oil the cyclone has to remove is also small. As has been said above, some people just allow the vent pipe to vent to atmosphere and they plug the hole in the air induction pipe. Some people put the end of the pipe in to a 'catch can' to collect any oil that might make it through. I did the catch can thing with mine once and ran it like that for a while and got absolutely nothing in the catch can.
It's highly unlikely that you need to change your cyclone breather.
 
Dub Siren said:
To save me adding another thread and hassling everyone I wonder if any of you may know this - which type and section of exhaust am I missing.

The Land Rover is 1985 but with a seemingly disco 300tdi in and is missing half of the exhaust. Not sure which one to choose am I best to get a chassis number and call a dealer or is it obvious what I need?

Any recommendations would be great. Thanks.
Click to expand...
Is it an ex military vehicle? If so it would have likely had a 2.5NA (naturally aspirated) engine in it before the 300Tdi was swapped in. It might still have the old exhaust system set up or they may have changed it. Looking underneath and seeing where the exhaust hangers are would give you a good idea of which way the exhaust pipe runs. You could then compare it to the pipes available on a site such as Paddocks. I appreciate that this might be tricky for you if you're new to this.
Here's a link to the 2.5NA exhaust parts on Paddocks. All the system permutations are on there, but this one is probably a good one to start with if your Landy is ex military. PADDOCK SPARES
 
Dub Siren said:
To save me adding another thread and hassling everyone I wonder if any of you may know this - which type and section of exhaust am I missing.

The Land Rover is 1985 but with a seemingly disco 300tdi in and is missing half of the exhaust. Not sure which one to choose am I best to get a chassis number and call a dealer or is it obvious what I need?

Any recommendations would be great. Thanks.
Click to expand...

Okay, so you have an ex-MOD 1985 Ninety. This would have been a 2.5n/a engine, now with a 300TDi. The exhaust you need comes in a few options depending on where it's been cut off. The 200 and 300 TDi mid and rear exhaust sections are identical but be prepared to fiddle around with the exhaust mounts and rubbers to get a good fit. You could choose from a number of these for early-mid Ninety/90's.

https://www.lrworkshop.com/diagrams/land-rover-defender-exhaust-systems/exhaust-diesel
 
v8250 said:
Okay, so you have an ex-MOD 1985 Ninety. This would have been a 2.5n/a engine, now with a 300TDi. The exhaust you need comes in a few options depending on where it's been cut off. The 200 and 300 TDi mid and rear exhaust sections are identical but be prepared to fiddle around with the exhaust mounts and rubbers to get a good fit. You could choose from a number of these for early-mid Ninety/90's.

https://www.lrworkshop.com/diagrams/land-rover-defender-exhaust-systems/exhaust-diesel
Click to expand...
From memory, the downpipe from the turbo is going to be an issue. 2.5 NA have a different downpipe, and I think the exhaust is a different diameter, although not 100% about that.
 
Turboman said:
From memory, the downpipe from the turbo is going to be an issue. 2.5 NA have a different downpipe, and I think the exhaust is a different diameter, although not 100% about that.
Click to expand...

Definitely a different downpipe but from there rearward they're the same...give or take the odd shekel. My 200Tdi has Tdi downpipe and 200Tdi/2.5na mid and rear sections. Both of same diameter with only two silencers, one mid-section, one tail end alongside the crossmember. I think this is what @Dub Siren will need.
 
Thanks everyone! So I do think I have a 110 not a 90.

Given that the Dow pipe is in place I seemingly just need a mid and rear section for a 200or300tdi as that’s the engine which is now fitted.

Obviously there were no 300tdi engines in 1985 so I suppose I go for the earliest 200tdi exhaust for a 110? Suppose 110 is a measurement for chassis so pretty much all the same size and important thing is I match the right exhaust to the engine?

Thanks again!!
 
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