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300TDi Exhaust - Help please

RRC 1994 (MA651...) 300TDi with Catalyst and EGR (22L) (Auto)

The flexible section of the front pipe which also includes the catalyst has failed and will need to be replaced.

This is the front pipe design that exits vertically down from the manifold - ESR3495.

One solution is to replace the entire front pipe - either OE or otherwise - which seems a very expensive way to go when the catalyst is somewhat unnecessary.

I don't believe that there is another set up with the vertical down manifold outlet that could yield a catalyst-free pipe.

Someone is selling a flexible repair section a very healthy profit but I believe that I can get the same parts at a fraction of the price. I have access to a 'tame' TIG welder so will be able to attach some mild steel stubs leaving me to weld the assembly into the old pipe.

Second hand parts - probably too much hassle.

Are there any other alternatives that I have failed to consider?

Reply to
Dougal
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On a 300Tdi Discovery with CAT, the CAT can be deleted by fitting

ESR2740 Down Pipe - 300 Tdi Disco Auto/RRC Non-CAT £47.00 inc VAT and ESR2391 Disco Intermediate/Tail Exhaust From MA 081992 - Non CAT £50.00

We have sold these to 300Tdi Range Rover owners before without finding a mob with burning torches outside, so I assume it works well enough. The two vehicles were pretty much identcal mechanically by them.

Richard

Reply to
beamendsltd

Has anyone ever done the scheduled cat change around 100,000 miles!!

At my last MOT (Feb 05), with the original cat, the Disco (1997) had

225,000 miles and still passed the emissions with nothing more than it's annual shot of Redex the week before. Can it still be working after all these miles?

If it is not working and still passes the test, then the tests are........ .

Andy

Reply to
ntlworld

Reply to
Alex

I'd considered that possibility which certainly appears to have been available to some. The pictures however seem to suggest that they have a different manifold which does not have a vertical down outlet. Perhaps someone has been exercising artistic licence in the pictures!

Why Landrover should decide to use a catalyst with EGR for the UK market is beyond me - and trust me to have one of them.

Reply to
Dougal

Whilst on this subject, when I fitted a downpipe without cat to my 300 Disco with egr blanked off, the power dropped signifcantly. I mean it barely reached 50 mph!!!!! Re-fitted the cat downpipe and the power came back. I know of a lad with a Defender 300 who took his cat out and said it transformed the whole car - so what could have been the problem with mine?

Ali

Reply to
A

The exhaust manifold is part of the turbo assembly, and the RRC/Discovery/ Defender all use the same one! Has someone been playing?

Richard

Reply to
beamendsltd

On or around Sun, 5 Feb 2006 17:22:42 +0000 (UTC), beamendsltd enlightened us thusly:

that's what I fitted on our 300 TDi. 2 immediately obvious pluses are that

a) you don't have to dismantle the front half of the vehicle to fit it and b) the thing goes faster.

WRT a): I had to hacksaw through the old "cat" front pipe to get it off and to get one off/on in one piece would require removal of the geaqrbox crossmember, AFAICS. Open to evidence that this isn't so - but there was no way the old one was gonna come off.

the new non-cat pipe will *just* go in without removing anything and has the same flange to connect to the intermeditate box so I don't see you have to replace the box/tailpipe sections if they're still OK.

Reply to
Austin Shackles

On or around Sun, 05 Feb 2006 22:21:35 +0000, Dougal enlightened us thusly:

the 300 TDi front pipe, non-cat, is a direct replacement for the cat one but without a cat.

On ours, I blanked off the EGR :-)

Reply to
Austin Shackles

If there is only only manifold for all the 300TDis then someone has been excerising their artistic talents on the pictures. The parts are original.

As the rear pipework has lots of life left, it will not be sacrificed this time but there does seem to be solution for the next occasion.

Thanks to all who have offered suggestions.

Reply to
Dougal

On Mon, 6 Feb 2006 10:12:54 -0000, "Huw" scribbled the following nonsense:

Reply to
Simon Isaacs

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