N16 DCi-R
- Thread starter edk
- Start date
LOVELY :drool:
Darren198712
Just chillin'
I would get something similar to mine. black border with the username and web address on the bottom.
I blanked off my EGR today. I tired to do this a few weeks back but sheared a stud and rounded a bolt which left me in a difficult position, and a blowing exhaust manifold!
Anyway it's all sorted now, fitted with new gaskets too. The blanks were made by a CoV and they're top work. If anyone has a Primera, Almera of Navara Diesel I'd recommend these as he's making and selling them for all
Lots of soot just inside the opening to the inlet manifold from the EGR tube so it's a good bet the whole intake is like that. Now that it's blanked it'll stop the build up, and I'll get some Wynns EGR cleaner in there at the next opportunity. No doubt throttle response is going to be improved with the whole of the EGR tube removed which was like an extension of the exhaust manifold. Also MPG will increase.
Pics
These blanks have allowed the removal of the EGR tube. A saving of 850g :lol:
Cleaned up the surfaces
Anyway it's all sorted now, fitted with new gaskets too. The blanks were made by a CoV and they're top work. If anyone has a Primera, Almera of Navara Diesel I'd recommend these as he's making and selling them for all
Lots of soot just inside the opening to the inlet manifold from the EGR tube so it's a good bet the whole intake is like that. Now that it's blanked it'll stop the build up, and I'll get some Wynns EGR cleaner in there at the next opportunity. No doubt throttle response is going to be improved with the whole of the EGR tube removed which was like an extension of the exhaust manifold. Also MPG will increase.
Pics
These blanks have allowed the removal of the EGR tube. A saving of 850g :lol:
Cleaned up the surfaces
No no and no I'm afraid Steve Don't worry about it though. I'll go over some basics so I hope this isnt making you suck eggs but I'll cover it all to be safe
These run a cool EGR system (the tube itself acts as an 'intercooler' or sorts for the gases) and don't affect cylinder temps very much. The intercooler upgrade I have in place anyway allows more air into the engine so using my Exhaust Gas Temperature guage I can see that I'm running very cool anyway, about 300 degC bellow safe levels (this just shows how light a tune Nissan gave this 2.2 beast of an engine). So yeah by blanking the EGR and allowing more clean fresh air into the cylinders will in fact either cancel out not having the exhaust gases any more or even make the cylinder temps even cooler.
The reason for the EGR on a Diesel is to burn any No2 gases. It's an emissions thing, but doesnt effect the MOT as Diesels are only judged by a Smoke Test.
Ok for one, Diesels are REALLY flexible when it comes to Air/Fuel ratios, so for a Diesel to actually be 'overfueling' you'd need a silly amount of fuel to be going in against very little air (see video). Fuel is what gives Diesel engines their power, and air is less important unlike in Petrol tuning. The more air you put in to a diesel though the more fuel you can put in which is the same as a petrol, the difference in that running rich gives more power to a Diesel engine. More fuel = hotter exhaust gases and cylinder temps but this only becomes dangerous levels with LOTS of fuel. For exmaple I can get away with a smokey tune to gain more power. Upping the boost and/or upgrading the turbo provides more air to reduce the smoke, which in turn allows for more fuel to be dumped in!
For my engine the hybrid turbo will be able to provide lots of air. The bottle neck could be in the fuel pump and/or injectors. Upshot is that because this engine is to be tuned and I've got my eye on EGR temps, any changes to the setup is fine.
Sorry it's that's a bit of mess but I was just typing what was dribbling out of my brain :thumb:
Don't worry about it though. I'll go over some basics so I hope this isnt making you suck eggs but I'll cover it all to be safe These run a cool EGR system (the tube itself acts as an 'intercooler' or sorts for the gases) and don't affect cylinder temps very much. The intercooler upgrade I have in place anyway allows more air into the engine so using my Exhaust Gas Temperature guage I can see that I'm running very cool anyway, about 300 degC bellow safe levels (this just shows how light a tune Nissan gave this 2.2 beast of an engine). So yeah by blanking the EGR and allowing more clean fresh air into the cylinders will in fact either cancel out not having the exhaust gases any more or even make the cylinder temps even cooler.
The reason for the EGR on a Diesel is to burn any No2 gases. It's an emissions thing, but doesnt effect the MOT as Diesels are only judged by a Smoke Test.
Ok for one, Diesels are REALLY flexible when it comes to Air/Fuel ratios, so for a Diesel to actually be 'overfueling' you'd need a silly amount of fuel to be going in against very little air (see video). Fuel is what gives Diesel engines their power, and air is less important unlike in Petrol tuning. The more air you put in to a diesel though the more fuel you can put in which is the same as a petrol, the difference in that running rich gives more power to a Diesel engine. More fuel = hotter exhaust gases and cylinder temps but this only becomes dangerous levels with LOTS of fuel. For exmaple I can get away with a smokey tune to gain more power. Upping the boost and/or upgrading the turbo provides more air to reduce the smoke, which in turn allows for more fuel to be dumped in!
For my engine the hybrid turbo will be able to provide lots of air. The bottle neck could be in the fuel pump and/or injectors. Upshot is that because this engine is to be tuned and I've got my eye on EGR temps, any changes to the setup is fine.
Sorry it's that's a bit of mess but I was just typing what was dribbling out of my brain :thumb:
Talking of EGRs Ed - I found out recently that Phase 1 petrol N16s use a very similar looking pipe to your deisel, but the Phase 2s are completely different. When I changed the manifold over, I didn't need the attachment that came with it as Phase 2s use an internal recirculation system apparently.
