Diesel friends,


This is probably a hot topic, but which do you prefer? Which lasts longer? Which is easier to clean and maintain?


I've heard GREAT things about the uni filter, but I know K&N is legendary.


Your thoughts?


~Terel

IMO...


Snake oil. The OEM air filter element will flow more than a stock motor will ever need.


Cold Air Induction can make a difference, but the element material is "immaterial".

I have used the K&N OEM replacment filter and I just threw in a VOLANT cold box air intake system. Love it !


Seen installed on my rig:http://www.dieselplace.com/forum/uploads/Z95_Volant_AirIntake_System_On_My_Rig.JPG


And here is my rig:http://www.dieselplace.com/forum/uploads/6E8_My_Ride.jpeg

IMO...


Snake oil. The OEM air filter element will flow more than a stock motor will ever need.


Cold Air Induction can make a difference, but the element material is "immaterial".





McRat is right. OEM air filter elements also preserve your warranty. http://www.dieselplace.com/forum/smileys/Approve.gif

Go up to the engine forum and read the thread on air filter tests. Several have reported problems with holes in the UNI filters and the K&N has shown tendancy to allow anything smaller than marbles pass through. One of the members has built a test stand and is running many different filters through the paces to determine what really works and what does not.

Bodysurfer,


What exactly (and how) does the Volant cold air box do?


~Terel








I have used the K&N OEM replacment filter and I just threw in a VOLANT cold box air intake system. Love it !


Seen installed on my rig:http://www.dieselplace.com/forum/uploads/Z95_Volant_AirIntake_System_On_My_Rig.JPG


And here is my rig:http://www.dieselplace.com/forum/uploads/6E8_My_Ride.jpeg

google.com:

http://www.streetbeatcustoms.com/volant-gm-truck-and-suv.html

http://www.trucknvans.com/air/vcgmc.htm

http://www.tbyrnemotorsports.com/trucks/truckinduction.htmlEdited by: conradv

Take a look at the Volant web site. Volantperformance.com


I like it!http://www.dieselplace.com/forum/smileys/Big Smile.gifEdited by: Bodysurfer

terel,


Below is a test process undertaken by one of our distributors, they are a full line injector/pump shop and do a lot of othger test equipment for industrial use. The information that Danny produced IS the reason we ONLY sell and use Pro Guard 7 intake an filter systems. They flow a lot yet keep the dirt out as well a sthe OEM paper filter.


Here's what Dan Montegari of Precision Diesel Services says about advanced FLOW engineering's Pro-GUARD 7 filter media:


HIGH FLOW AIR INTAKE SYSTEMS
WHO IS THE BEST & WHY!


We received many letters asking which high flow air intake system to use. We decided to test a number of manufacturers’ systems to determine which system was superior. We tested each system and found systems manufactured by AFE (Advanced Flow Engineering) were the best by far.


Diesel engines use seven times more air than gasoline engines of equivalent size so clean cool air is a must for extended engine life, better fuel economy and additional power. A higher flow of intake air coupled with a high flow exhaust system allows for more power, a better fuel economy, extended engine life and reduced exhaust temperatures. On the other hand ingested dirt through the air intake system becomes Silicon in the engine oil, which is a harsh cutting agent and can damage your engine quickly.


We tested three very popular systems. I will not mention the names of the other systems as a courtesy but I will explain what problems we found with them. We evaluated the systems by a number of criteria, filtration protection, flow, and design, easy of installation and cost. Almost in the beginning of the tests we realized in most instances a new intake system was necessary to achieve our goals. We needed a kit that used mostly outside air and not hot engine compartment air. We decided to use systems designed to use mostly outside air.


Two manufacturers claimed their systems delivered cleaner air at a higher flow but this was far from the truth. We did not believe any of the manufacturers’ claims and tested each system by operating the vehicle 3,000 miles and performing an engine oil analysis to determine Silicon levels in the engine oil. The vehicle we used has an engine oil analysis performed at every oil change so we had a Silicon number of three (3) to base our tests on.


The first manufacturer’s system was fairly easy to install but we had problems with the oil used to coat the filter also coated the Mass Air Flow Sensor causing a service engine lamp to come on. I called the manufacturer but they had no explanation as to why this should happen but they had this complaint before. Through the three thousand mile test I had to clean the sensor three times to stop the service engine lamp from coming on. When the oil analysis results came back, it was discouraging with Silicon levels at eleven (11). I almost could not believe the result so we changed the oil and filter and repeated the test. The results were almost the same eliminating this manufacturer quickly. I contacted the manufacturer to discuss the results and they were not helpful and basically said, “what you see is what you get”!


We installed the second manufacturer’s system again changing the engine oil and operating the vehicle for three thousand miles. The first problem we encountered was the service engine lamp coming on and I thought the oil they used was coating the sensor again.

Interesting read. I have a question for anyone who can answer. How can a diesel use 7 times more air than the same size gas engine? Makes no sense to me. Sure, diesels have higher compression. But even if it's 2.5 times higher that would only be 2.5 times more air, not 7 times. Also, gas engines run at a higher rpm so that 2.5 would be knocked down even smaller. What am I missing here? Edited by: Oldman

I was wondering the same thing jc, must be that new math? http://www.dieselplace.com/forum/smileys/Geek.gif


ROB

Interesting read. I have a question for anyone who can answer. How can a diesel use 7 times more air than the same size gas engine? Makes no sense to me. Sure, diesels have higher compression. But even if it's 2.5 times higher that would only be 2.5 times more air, not 7 times. Also, gas engines run at a higher rpm so that 2.5 would be knocked down even smaller. What am I missing here?



If you were talking about a naturally asparated diesel your math would perhaps be more accurate. Your turbo is compressing the air and it take more air to feed that compressor.

I can see that Max but it just said a diesel uses 7 times more than an equivilant sized gas engine. No mention of turbos or supercharges on either. The way I read it it's talking all other factors being the same. ???

this might answer some questions


http://www.baldwinfilter.com/products/airhousing.pdf

Oldman,


The 7 x factor is real due to the compressor force feeding the engine, just like a gas engine using a supercharger or turbo will do nearly the same. It's multiplying the current atmospheres at the location (sea level or whatever) of the engine by compression of the available oxygen source. In fact under dynamic loads a diesel will use as much as ten (10) times in extreme work conditions.


That's also why a "real" air fitler is so important on a diesel as compared to a naturally aspirated gas engine.


Mark @ DPPI