Thread: TD5 cat and centre muffler removal

Most cat's are designed to last only around 160,000 k's so it may already be just a waste/ unnecessary blockage in your exhaust.
So either be honest and just put in a straight pipe, be enviro and get a new cat or be sneaky and open it up, gut it and replace.
The "it was that way when I got it Dunno" excuse may work as long as you did not own it from new.

Cats on a TD5 aren't legal requirement. No legislation was in force when they were in production and installation was hit and miss from the factory.
Even today, there are a number of different methods of treating diesel exhaust emissions, none of which can be legislated as mandatory other than being for large capacity ie truck engines to conform to loosely propped up Euro4 standards here.
Even with current cat style units in heavy vehicle systems, some are moving away from catalytic systems and using SCR reducing exhaust injection chemicals namely products like Adblue which is essentially urea and water mixed then injected into the exhaust stream.
Isuzu have a cat type system as do Detroit Diesel, however both operate differently in a number of ways.
Mercedes Benz, Cummins, Volvo and others use the simpler urea injection system as it removes exhaust restrictions with the cat and allows for higher power output by simply treating a more toxic exhaust with a higher dose rate. Basically leaves exhaust cleaner than when it went into the engine.

The only cats under legal requirement are for petrol powered engines as there is really only one way to remove potentially harmful emissions. Even the way they work is a design law.

Andrew.


I am not a moderator, I am a human being!!!

Originally Posted by LOVEMYRANGIE

Cats on a TD5 aren't legal requirement. No legislation was in force when they were in production and installation was hit and miss from the factory.
Even today, there are a number of different methods of treating diesel exhaust emissions, none of which can be legislated as mandatory other than being for large capacity ie truck engines to conform to loosely propped up Euro4 standards here.
Even with current cat style units in heavy vehicle systems, some are moving away from catalytic systems and using SCR reducing exhaust injection chemicals namely products like Adblue which is essentially urea and water mixed then injected into the exhaust stream.
Isuzu have a cat type system as do Detroit Diesel, however both operate differently in a number of ways.
Mercedes Benz, Cummins, Volvo and others use the simpler urea injection system as it removes exhaust restrictions with the cat and allows for higher power output by simply treating a more toxic exhaust with a higher dose rate. Basically leaves exhaust cleaner than when it went into the engine.

The only cats under legal requirement are for petrol powered engines as there is really only one way to remove potentially harmful emissions. Even the way they work is a design law.

Andrew.


I am not a moderator, I am a human being!!!

Actually ADR80 came in in 2002 and relates directly to diesel engines in Light vehicles and were based on the Euro 2 standards.

These were later updated by ADR 79/01 in 2006 which relate to diesel engines in Light vehicles based on the Euro 3 standards.

Regardless,it is still an offense to remove or modify any factory fitted piece of emission equipment.

Whether they work or not is not the point,nor is the fact that they may have been fitted to some models and not others.The point is that if it is removed,it is illegal.

Wayne

Originally Posted by LowRanger

Actually ADR80 came in in 2002 and relates directly to diesel engines in Light vehicles and were based on the Euro 2 standards.

These were later updated by ADR 79/01 in 2006 which relate to diesel engines in Light vehicles based on the Euro 3 standards.

Regardless,it is still an offense to remove or modify any factory fitted piece of emission equipment.

Whether they work or not is not the point,nor is the fact that they may have been fitted to some models and not others.The point is that if it is removed,it is illegal.

Wayne

Wayne

It is also an offence to change your exhaust system from the factory system....

Its also an offence to speed...

However, in this case, there is NO definition that a D2 of any year be fitted with a Cat exhaust...

The cat was fitted in-line with up and coming EU4 emissions and was already compliant with EU3 emissions in non-cat form.

I have seen many D2s from around 2004 with no cat fitted...

The Cat is not mandated to the vehicle, the regulation states the vehicle must comply with emmisions for its year (and non- cat does)...
Non EGR TD5s tuned right still meet ADR as well...

Fitting a full LPG system to a Petrol and removing all emmissions gear is/was also legal as LPF exceeds the required targets

Now for something to think about! When a late TD5 engine goes pop and a buyer gets a good low KM TD5 engine - do they check if its EU3 or EU2 before installing

Originally Posted by LowRanger

Actually ADR80 came in in 2002 and relates directly to diesel engines in Light vehicles and were based on the Euro 2 standards.

These were later updated by ADR 79/01 in 2006 which relate to diesel engines in Light vehicles based on the Euro 3 standards.

Regardless,it is still an offense to remove or modify any factory fitted piece of emission equipment.

Whether they work or not is not the point,nor is the fact that they may have been fitted to some models and not others.The point is that if it is removed,it is illegal.

Wayne

Just did a little bit of light reading (270 pages) from our ADRs...

Light Diesel vehicles PRE 2005 under 3.5tonne are only required in Aus to comply with EU2 requirements....

Also, mandatory testing after 5 years or 80,000km (whichever is first) to confirm meeting regs is also in there!

As far as modifications are concerned - According to the ADR, as long as vehicle meets the specified emmisions legislated it will pass

A TD5 with a piece of drain pipe for an exhaust meets EU2 and most meet EU3 spec...