Have just bought a 2007 nissan patrol 3ltr turbo diesel.... can anyone give me some feed back wether to go 3" or 2.5" looking for a nice sounding wihstle!!
Cheers, Beno!!
(only interested in info on exhaust)
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3" or 2.5" mandrel exhaust
Benno,
I have 2002 model,3 litre,went with 2 3/4 " from turbo back no
muffler only a ressy in tha tailpipe,Turbo lag almost gone now even with running 33'' tyres.Whistles up to redline quicker and sounds awesome.
I didn't go the 3'' cause I couldn't go any bigger out the back of the turbo so it would have been pointless.
I have 2002 model,3 litre,went with 2 3/4 " from turbo back no
muffler only a ressy in tha tailpipe,Turbo lag almost gone now even with running 33'' tyres.Whistles up to redline quicker and sounds awesome.
I didn't go the 3'' cause I couldn't go any bigger out the back of the turbo so it would have been pointless.
emissions control..... the reason all nissan diesel patrols are going to the 3 litre, the 4.2s dont pass new emissions laws. found this out when looking at a new ute.. they said get in quick because they will all have 3.0s next model.
the cat is just one of those things i guess to help change it to make it legaler
the cat is just one of those things i guess to help change it to make it legaler
turbos are nice but i'd rather be blown
From Wikipedia:
For compression ignition (i.e., Diesel) engines, the most commonly used catalytic converter is the diesel oxidation catalyst. The catalyst uses excess O2 (oxygen) in the exhaust gas stream to oxidize CO (Carbon Monoxide) to CO2 (Carbon Dioxide) and HC (hydrocarbons) to H2O (water) and CO2. These converters often reach 90% effectiveness, virtually eliminating diesel odor and helping to reduce visible particulates (soot), however they are incapable of reducing NOx as chemical reactions always occur in the simplest possible way, and the existing O2 in the exhaust gas stream would react first.
To reduce NOx on a compression ignition engine it is necessary to change the exhaust gas - two main technologies are used for this - selective catalytic reduction (SCR) and NOx (NOx) traps (or NOx Adsorbers).
Another issue for diesel engines is particulate (soot). This can be controlled by a soot trap or diesel particulate filter (DPF), as catalytic converters are unable to affect elemental carbon (however they will remove up to 90% of the soluble organic fraction). A clogging soot filter creates a lot of back pressure decreasing engine performance. However, once clogged, the filter goes through a regeneration cycle where diesel fuel is injected directly into the exhaust stream and the soot is burned off. After the soot has been burned off the regeneration cycle stops and injection of diesel fuel stops. This regeneration cycle should not affect performance of the engine.
All major diesel engine manufacturers in the USA (Ford, Caterpillar, Cummins, Volvo, MMC) starting January 1, 2007 are required to have a catalytic converter and a soot filter inline, as per new EPA legislation. http://www.epa.gov/otaq/highway-diesel/ ... ighway.htm
For compression ignition (i.e., Diesel) engines, the most commonly used catalytic converter is the diesel oxidation catalyst. The catalyst uses excess O2 (oxygen) in the exhaust gas stream to oxidize CO (Carbon Monoxide) to CO2 (Carbon Dioxide) and HC (hydrocarbons) to H2O (water) and CO2. These converters often reach 90% effectiveness, virtually eliminating diesel odor and helping to reduce visible particulates (soot), however they are incapable of reducing NOx as chemical reactions always occur in the simplest possible way, and the existing O2 in the exhaust gas stream would react first.
To reduce NOx on a compression ignition engine it is necessary to change the exhaust gas - two main technologies are used for this - selective catalytic reduction (SCR) and NOx (NOx) traps (or NOx Adsorbers).
Another issue for diesel engines is particulate (soot). This can be controlled by a soot trap or diesel particulate filter (DPF), as catalytic converters are unable to affect elemental carbon (however they will remove up to 90% of the soluble organic fraction). A clogging soot filter creates a lot of back pressure decreasing engine performance. However, once clogged, the filter goes through a regeneration cycle where diesel fuel is injected directly into the exhaust stream and the soot is burned off. After the soot has been burned off the regeneration cycle stops and injection of diesel fuel stops. This regeneration cycle should not affect performance of the engine.
All major diesel engine manufacturers in the USA (Ford, Caterpillar, Cummins, Volvo, MMC) starting January 1, 2007 are required to have a catalytic converter and a soot filter inline, as per new EPA legislation. http://www.epa.gov/otaq/highway-diesel/ ... ighway.htm
"the new 3 litre has a cat and it is a major par of the emissions system. you have to get an exhaust with a new cat aswell"
Can most exhaust shops supply the cat or are there specialty places that do them. When i asked about changing the exhaust to 3", the bloke said he left it out as it wasn't needed. I am a bit sceptical as its also my work car registered to my business and i don't want any warranty issues (the ZD30 already has a dodgy name so the less issues the better).
Matt
Can most exhaust shops supply the cat or are there specialty places that do them. When i asked about changing the exhaust to 3", the bloke said he left it out as it wasn't needed. I am a bit sceptical as its also my work car registered to my business and i don't want any warranty issues (the ZD30 already has a dodgy name so the less issues the better).
Matt
AWESOME!!....... 
Anyway...there put in there to meet the emissions system on manufacture. That does'nt mean you have to keep it!! my understanding is that the kat does not effect performance or economy unlike the particulate filter found in the new navara 2.5 diesels where performance is reduced.
i dont think the exhaust kits from tjm supply kat converta!! I could be wrong! But im not! But i could be...
Ill have to ask the zaust place when it comes time to get it done!!! And thanks for your kind words "bogged"!!
extendard warranty
Anyway...there put in there to meet the emissions system on manufacture. That does'nt mean you have to keep it!! my understanding is that the kat does not effect performance or economy unlike the particulate filter found in the new navara 2.5 diesels where performance is reduced.
i dont think the exhaust kits from tjm supply kat converta!! I could be wrong! But im not! But i could be...
Ill have to ask the zaust place when it comes time to get it done!!! And thanks for your kind words "bogged"!!
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