Vehicle & Technical > Discovery

200 disco 'EGR' type pipe, can it be blocked off?

(1/3) > >>

lightweight-love:
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

chris9119:
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.

crazymac:
Willing to stand corrected, but i'm sure that there is no EGR on a 200!

clbarclay:
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.

Xtremeteam:
dont block of the breather going to the inlet as i did & pumped the oil from the sump out the dipstick :doh:

Navigation

[0] Message Index

[#] Next page