EGR Blanking plates, anyone fitted one?

Technical questions and answers about the Mazda Bongo

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neil/di
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Post by neil/di » Fri Feb 23, 2007 5:08 pm

I have sent Allans my order I will let you know how it goes
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Peg leg Pete
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Post by Peg leg Pete » Fri Feb 23, 2007 9:40 pm

I think I will order one from Allens too, such a nice helpful fellow :wink:
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Post by neil/di » Fri Feb 23, 2007 10:11 pm

Yes,Pete, I spoke to him today, and very helpfull person he is,sent him an email with details and hopefully I will have it soon
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Tur80

Post by Tur80 » Sat Feb 24, 2007 9:20 am

Blanked mine off at the inlet manifold with a steel plate + couple of bolts, and also the same at the exhaust manifold, however i used a Ford Ranger exhaust manifold as they have the 2x bolt hole design and not the threaded aperture as per Bongo manifold.
A fair bit of work but I was changing the the turbo at the time and had one from a Ranger complete with manifold. Just had to rotate turbo housing redrill and tap + small mod to wastegate mounting, for anyone looking for a suitable replacement.
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Post by bigdaddycain » Sun Feb 25, 2007 9:50 am

Hi TUR80, is there any downside at all to blanking off the E.G.R. system? Will my bongo still sail through her M.O.T.s? And although its better to remove all the pipework for a "bob on" job,is simply blanking off with a coin at the inlet manifold sufficient?
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dandywarhol
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Post by dandywarhol » Sun Feb 25, 2007 10:19 am

Sorry folks - I just don't get all this dismantling, blanking off with coins, plates bearing balls, etc. - why not just pull off the vacuum pipe and stuff a rivet in to seal the pipe :?:

This was detailed by Veg Ian with pics.......its really a 5 minute job :)

No MOT probs bigdaddy.......only a smoke test required for that.........I always bung a bottle of injector cleaner in the tank before the MOT and give it a sound thrashing around the city bypass - works fine :D
Last edited by dandywarhol on Sun Feb 25, 2007 10:29 am, edited 1 time in total.
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bigdaddycain
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Post by bigdaddycain » Sun Feb 25, 2007 10:23 am

:wink: Cheers dandy :wink:
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Post by David Edwards » Sun Feb 25, 2007 2:13 pm

Peeps there are owners reading this who are no doubt wondering what the hell is an EGR and what does it do. Step forward techies and explain please. Pippin I got it but for some reason my pc would not accept my entry and I didnt want to push it as it doubled my post yesterday. Got to sort it today tho. Happy motoring.
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Post by Veg_Ian » Sun Feb 25, 2007 3:15 pm

No John, the thread looks a lot different. You need to be able to blank off both manifolds in order to remove the pipe work.
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Post by dandywarhol » Mon Feb 26, 2007 12:38 am

David Edwards wrote:Peeps there are owners reading this who are no doubt wondering what the hell is an EGR and what does it do. Step forward techies and explain please. Pippin I got it but for some reason my pc would not accept my entry and I didnt want to push it as it doubled my post yesterday. Got to sort it today tho. Happy motoring.
All you gotta do is Google it................

http://en.wikipedia.org/wiki/Exhaust_gas_recirculation
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Post by mikeonb4c » Mon Feb 26, 2007 11:46 am

...and there is good previous debate on BF (enter EGR into search to list threads - one in particular is called 'Inlet manifold sludge and EGR')
stulegg

Post by stulegg » Wed Feb 28, 2007 1:20 pm

but what does the EGR system actually do?????
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Post by francophile1947 » Wed Feb 28, 2007 1:52 pm

It just sucks some of the exhaust gas back through the engine, as a means of cutting pollution. Problem is that diesel exhaust is mucky so you end up with a sludged-up inlet manifold.
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Caps

Post by Caps » Wed Feb 28, 2007 2:30 pm

In Japan, emission controls are more strict than they are in the UK. As I understand it, the EGR process helps to lower emissions of nitrous oxide, which is better for the environment. The engine produces gases. They go out through the exhaust into the atmosphere. Basically, the EGR allows some of the gas to recirculate into the engine before it exits through the exhaust. The process somehow lowers the oxygen concentration and the engine produces less nitrous oxide.
Someone else may be able to explain it better!
Veg_Ian

Post by Veg_Ian » Wed Feb 28, 2007 3:47 pm

In Japan, emission controls are more strict than they are in the UK. As I understand it, the EGR process helps to lower emissions of nitrous oxide, which is better for the environment. The engine produces gases. They go out through the exhaust into the atmosphere. Basically, the EGR allows some of the gas to recirculate into the engine before it exits through the exhaust. The process somehow lowers the oxygen concentration and the engine produces less nitrous oxide.
exactly right. The EGR also recirculates the soot and crap that comes out of the expelled gas. This solidifies and collects in the inlet manifold and blocks up the airways - not nice!
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