Mud-club
Vehicle & Technical => Discovery => Topic started by: lightweight-love on July 24, 2008, 02:57:31
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Hi iv got a 200disco engine in my series and iv been told the pipe that recirculates oily/fuel gases into the plastic pipe coming off the air filter so from there into turbo and intercooler, can be blocked off? is this true? as im plumbing up filter box from a 300tdi and if i can lose that pipe it will be handy and it does oil up the turbo n intercooler! below is a pic to show the pipe its the silvery one that runs beside top rad hose and under top intercooler hose!
Many thanks for advice
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Errrrr, I think that's the engine/rocker breather line. If you block it off, I'm sure the engine will pressurise and that cannot be good.
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Willing to stand corrected, but i'm sure that there is no EGR on a 200!
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The engine needs a breather pipe, in this case comming off the top of the rocker cover. On tractors and industrial machines it is often left dangling down, venting to the atmosphere, however with cars this would leed to a build up of oil on the raod, which is why they have it connected to the intake so that any residue gets burnt and sent out the exhaust.
On racing cars where maxium power is a priortiy then small amounts of heavy oil being inducted is not desirable, instead they vent the breather to a catch tank, resulting in no oil being inducted and no oil on the road. The down side is the catch tank has a limited volume and is constantly being filled up so no very practicle for road cars.
On most engines (the TDi above included) there is a swirl pot fitted to the breather. This causes the gases to spin and the heavy objects such as oil get through to the sides and then dip back down into the engine sump whilst the lighter gasses rais up to the breather pipe taking them to the inlet. As a result the abount of oil getting from the sump to the induction system is minimal and I seriously doubt that you will get any noticable benefit from redirecting the breather pipe.
Some engines like the early V8s and the VM fitted to RRC (or at lest the one in our 1987 model) didn't have swirl pots on the breather pipe, and in the VMs case the breather was connected to the air intake before the air filter. The result was more oil in that filter than in the oil bath air filter on our last series LR. I did change it to a catch tank before realising how impracticle it is, particuarly when wading, and it latter got a swirl pot retro fitted and the breather pipe routed back to the air intake.
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dont block of the breather going to the inlet as i did & pumped the oil from the sump out the dipstick :doh:
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Hi iv got a 200disco engine in my series and iv been told the pipe that recirculates oily/fuel gases into the plastic pipe coming off the air filter so from there into turbo and intercooler, can be blocked off? is this true? as im plumbing up filter box from a 300tdi and if i can lose that pipe it will be handy and it does oil up the turbo n intercooler! below is a pic to show the pipe its the silvery one that runs beside top rad hose and under top intercooler hose!
Many thanks for advice
200Tdi's weren't fitted with EGR as standard and I can't see any evidence of the pipework/valve/etc in your picture so I don't think you've got it :-)
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Rocker breather line thats the name of it! couldnt think what its called! yeh i know its not an EGR but it is kinda similar-Kind of.
i would run with it connected but im using a 300tdi filter box and itd be easier to lose it!
i agree i dont wanna block it off due to pressurizing sump so can i just have it directed to the ground? or is that illegal?
Many thanks for advice guys!
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Rocker breather line thats the name of it! couldnt think what its called! yeh i know its not an EGR but it is kinda similar-Kind of.
i would run with it connected but im using a 300tdi filter box and itd be easier to lose it!
i agree i dont wanna block it off due to pressurizing sump so can i just have it directed to the ground? or is that illegal?
Many thanks for advice guys!
you can go in to your local halfrauds and get a engine breather filter, looks similar to a K&N air filter which will do the trick
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is a mini K&N style filter the answer then? with oily gases going through surely itl just get gunged up? or is that the idea and i just keep cleaning it regularly!?
also if i did fit one itl be vulnerable when wading, as it doesn't push out enough gas to keep water out,,,?
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keep it as then you wont get any probs
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What do the K&N style breather filters do for wading capabilities. The existing system should be completely sealed, what is there with the a filter to atmoshpere when deep wading to prevent muddy water getting into the block?
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in the end im sticking with the standard set-up kinda, im attaching the breather to the 300 box so will work as meant to be, keeps it simple and safe for wading.
Thanks for all advice!
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in the end im sticking with the standard set-up kinda, im attaching the breather to the 300 box so will work as meant to be, keeps it simple and safe for wading.
Thanks for all advice!
There is a really simple and useful way to divert the engine breather pipe and that is to stick the end inside your chassis. No pressurisation problems, no oil dripping on the road. And it helps to keep part of your chassis from rotting as fast as the rest of it :lol:
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haha love it thats proper landrover engineering that!
where iv got it now it will vent into top of 300tdi filter box right next to air outlet so gas will be sucked in and any oil drip will go onto air filter-better than gunging up intercooler!