Name of part please - pipe coming off EGR valve?

[RevNuts]

Hi,

I have a Renault Lanuna Mk1 1999 Diesel and the pipe running from the back of the engine up to the bottom of the EGR valve has corroded and split (it's a silver pipe that bends in two places).

I need to start searching for a 2nd hand replacement pipe. The only problem is I don't know what the name of the pipe is and whether or not I'll need a gasket to go with it. Can anyone help with these questions please?

Many thanks,

Baby Grease Monkey

[seagrey]

Its called the egr pipe.

[busta]

Easiest and best thing to do is take off all of the EGR stuff and blank up the holes where it fitted the exhaust and inlet manifolds.

[RevNuts]

seagrey said:

Its called the egr pipe.

Ha ha, is it really that simple? I've always assumed that most car parts maintain overly technical names that purposely obfuscate their true purpose.

Thanks for the clarification seagrey, you've saved me hours of endless searching.

[RevNuts]

busta said:

Easiest and best thing to do is take off all of the EGR stuff and blank up the holes where it fitted the exhaust and inlet manifolds.

I considered that last time the EGR valve gave me problems, but couldn't find a manufacturer/supplier of Mk 1 Laguna blanking plates.

[RevNuts]

seagrey said:

Its called the egr pipe.

Incidentally, do you also know if I have to order a gasket to go with it?

[busta]

RevNuts said:

busta said:

Easiest and best thing to do is take off all of the EGR stuff and blank up the holes where it fitted the exhaust and inlet manifolds.

I considered that last time the EGR valve gave me problems, but couldn't find a manufacturer/supplier of Mk 1 Laguna blanking plates.

If you can't find the bits, I'm sure someone could make them up very cheaply. All you need is the bits you removed to use as a template. I've made a few kits for various vehicles in the past.

[briers]

Yes, simple but right, its just the pipe that delivers the exhaust gas from the engine back through the valve.

Yes you will defiantly need a gasket and i can't think why you wouldn't be able to get the part but it can be easily copied. It's just a very simple pipe.

[FranKinFezza]

sheet of .5mm steel tin snips 10mm drill and cut you self a blanking plate to go in place
of the gasket at each end fit n forget you will thank us for it.

[RevNuts]

FranKinFezza said:

sheet of .5mm steel tin snips 10mm drill and cut you self a blanking plate to go in place
of the gasket at each end fit n forget you will thank us for it.

Does it do any damage to the engine?

Also, I read that it may cause more fumes to be emitted, which might not be good for the MOT?

Thanks

[busta]

Definitely doesn't harm the engine- EGR itself is a more harmful process, putting burnt gasses back through the engine. It shouldn't effect emissions either as EGR is to reduce NOx which isn't tested, and removing EGR actually reduces black smoke which is the only thing I've ever had a diesel fail an emissions test for.

Basically it's a system fitted so cars comply with the emissions standards set for manufacturers on the test cycles, but it has little or no benefit to day to day driving. Similar to stop-start technology- it makes a massive difference when they run the car through the pre-production emission tests, but in day to day driving you're lucky if it makes 1% difference.

[RevNuts]

busta said:

Definitely doesn't harm the engine- EGR itself is a more harmful process, putting burnt gasses back through the engine. It shouldn't effect emissions either as EGR is to reduce NOx which isn't tested, and removing EGR actually reduces black smoke which is the only thing I've ever had a diesel fail an emissions test for.

Basically it's a system fitted so cars comply with the emissions standards set for manufacturers on the test cycles, but it has little or no benefit to day to day driving. Similar to stop-start technology- it makes a massive difference when they run the car through the pre-production emission tests, but in day to day driving you're lucky if it makes 1% difference.

Thanks Busta, you've convinced me to perform the bypass. Would you happen to know any decent suppliers of blanking plates for my model? Alternatively, I might try to make my own, if I can find somewhere to buy some 5mm sheet metal (harder than you think, especially because B&Q and such don't stock it).

Edited by RevNuts on Sunday 10th April 03:10

[vladcjelli]

Just had my EGR valve blanked off by my friendly local independent garage. As above, sheet metal shaped drilled and bolted in between the old valve and the engine.

Vectra B cutting out when coasting, irregular idle RPM, only engine fault code registered EGR problem.

Hasn't cured it, but at least the EGR is off the agenda. Back tomorrow to try something new. I reckon the idle control valve is gunked up (instant internet expert) but am too scared to pull it all apart.

[RevNuts]

vladcjelli said:

Just had my EGR valve blanked off by my friendly local independent garage. As above, sheet metal shaped drilled and bolted in between the old valve and the engine.

Vectra B cutting out when coasting, irregular idle RPM, only engine fault code registered EGR problem.

Hasn't cured it, but at least the EGR is off the agenda. Back tomorrow to try something new. I reckon the idle control valve is gunked up (instant internet expert) but am too scared to pull it all apart.

Did you garage happen to mention what type of metal and what gauge they used for the plate?

I've read that it's best to use alloy steel. If you use just steel then it may react with the alloy mount and cause corrosion problems, but I did read this on ebay.

[supersingle]

I fitted a EGR blanking plate yesterday. I used a piece of steel (roughly 1.5mm thick) cut from an old exhaust. Don't use anything too thin or it might get eaten through. Hth.

[busta]

RevNuts said:

Did you garage happen to mention what type of metal and what gauge they used for the plate?

I've read that it's best to use alloy steel. If you use just steel then it may react with the alloy mount and cause corrosion problems, but I did read this on ebay.

Mild steel will be fine. The only corrosion problems will be that after a few years it might need a tap with a hammer to get it off, but you shouldn't need to be getting it off anytime soon so that doesn't matter.