Once again BIG HONKIN air filter

[Jim Fulmer]

I just ordered the big filter from the local cummins dealer,Fleet guard 19037 (He very curious about it now) the price 33. 46 plus tax, the question is has anyone thought of building an aluminum pan around it so it gets it's air from the fender area vise the hole under hood area. When I get it I may build(Tig) one together, if I do I'll post about it.



P. S. Thanks Mopar Man,

Jim

 

[QRTRHRS]

Jim,



There has been some discussion but I don't know of anyone who has come up with positive results. I have intentions myself but have been short on time as usual. I know that members have removed the rubber "snorkle" between the stock box and the fenderwell with positive results so you may not want to limit the air flow to that area. I have the big hole in my firewall from the Pyschotty System. Don't know how much that helps or not but I have real good EGT reduction so I believe it does. I was measuring five gallion buckets and found some variation in diameter. Some are large enough that the filter will fit into albeit tightly. I figure on cutting about 1/3 or so of the bucket away in a manner that will shroud the engine side but let some material on top to funnel air coming in from the firewall hole. Upon seeing any positive results if any, then replicate in aluminum or stainless. Neither I or anyone else that I have read about has had a problem with moisture. The concern has been the heat buildup from the close proximity to the turbo. So, a shroud should be designed to limit the heat and provide cool air.

 

[Big White Beast]

Exhaust blanket from Geno's garage.....

I have had it on for a few days now and it makes a huge difference on the physical temperature of the filter. Just adding the filter dropped the EGT's quite a bit. I haven't really noticed that much difference in EGT's with the blanket, mostly because I'm not bombed enough to drive em up there. They claim it lowers under hood air temps so the filter would be drawing cooler air.



I would be curious if a more heavily bombed truck would make a difference. SoCal dyno days coming up, Maybe I can let someone try it and we'll see.



It's kinda pricey but I looked for days trying to figure out a way to make a heat shield and nothing really looked feasable.



Garrett

 

[Jim Fulmer]

Heat Shield

I figure I'll get the filter put it on then after the(Holy cow it big) I'll come up with an Idea and if I can't figure out how to build it I have a bud that's a car chassis guy (that can build anything) and he can put some thought in it!



Jim

 

[SlyBones]

Which one

Ok here is a question,



I recall reading in the other post the one of the Fleetguard models has a screen on the inside as well as the outside. This is the marine version, its the cheaper and the one everyone is getting. -- The non marine version is more expensive, and no inside screen. Correct??



Next is does the Napa version have the inside screen too or just the Fleetguard?

 

[Jim Fulmer]

Filter screen

Sly, When I get it I will post about what it looks like on the inside.



Jim

 

[tmarti96]

Fleetguard filter heat shield

I have the Fleetguard # 19037 installed and I use a Jannetty Racing SS heatshield( 49. 95) Simple install. 10 min job. EGT a lot better now and turbo seems to spool up quicker. I like it. I have a mildly bombed 95 Ram 3500, with Goerend TC&VB, Jardine 4" system, 215 hp inj and Banks Power Pak plate. Good combination so far. I took a short trip today,(200 mi. ) and checked my mileage, at 65 mph, unloaded. Got 23 mph!! I am happy withthis.

 

[SlyBones]

tmarti96,



Any mods to that heat shield to make it fit? Got any pics?

 

[Jim Curry]

Hey Sly;



I am afraid you have it reversed. The marine version is the more expensive one and the one with no inner screen is both the less expensive version and the one that everyone is getting.



Jim

 

[SlyBones]

cool

Thanks

 

[MoparToYou]

I keep seeing lots of people working dilegently at ways to find a cooler air intake source; exhaust blankets, heat shields, psychottyesque systems, etc. But does anyone know if it makes one bit of difference to provide a cooler source of air to a turbocharged system with an intercooler?



What we really need is for someone to install a temperature sensor in the intake air tubing downstream from the intercooler. Going down the highway at 50 mph, I would think that the intake air temperature AFTER the intercooler would be the same, whether you had an exhaust blanket (or equivalent) heat shield, or not.



Stated differently, isn't it the temperature of air forced into the engine that is important, and not the temperature of air that is forced into the intercooler?



Enquiring minds want to know, thanks once again for your support.



MoparToYou.

 

[tmarti96]

air inlet temp

MoPartoYou,



You are probably right. But, maybe it would be easier for the intecooler to cool air that is not directly off the engine/exh manifold area. If air going into the intercooler is 15 degrees cooler, may be it would come out 15 degress cooler. I don't know. Leave it to someone smarter than me.

 

[Jim Fulmer]

Air temp

Mopar your right about the air temp, the big turbo(100mm) race cars measure the intake temp as well as EGT's(all 8) they run liquid to air coolers and look for intake temps below 100 and EGT's around 1600(seen some at 1800) but some don't worry about the air that gets to the turbo just so it is enough, but like you said someone needs to measure the intake temp and look for efficientcy there because other than that it is just guessing!

 

[Deezul1]

I have heard from an excellent source that the intercooler will remove 200 degrees so the cooler the outside air the cooler the air into the intake manifold. There is a formula that I dont know that will convert degrees to horsepower more heat less HP.

 

[Big White Beast]

Checked temps.......

I bought an inside/outside thermometer from Wal-mart. The out side probe had a 10 foot lead so I attached it to the screen of the BHAF at the point closest to the turbo. Unfortunately the response time of the probe is not that great. I was trying to find a way to put it inside the hose but the probe did not look like it was attached well enough. Didn't want to suck it into the turbo or engine. Might give it some more thought later. If I find a feasable way maybe I'll get 2 and put one in from the inlet side and one near the intake horn. That would yield the truest results.



Here are the results from some very limited testing.



Evening was cool, outside air temp probably 70°. Once engine was warmed up I did several runs.



Without Exhaust Blanket-----------With Exhaust Blanket

MPH --------- TEMP. ------------------------ TEMP.

35 --------- 105° ------------------------ 98°

45 --------- 90° ------------------------ 86°

55 --------- 80° ------------------------ 78°

65 --------- 78° ------------------------ 76°



Idle till cool down = Temps continued to climb, 120° and got tired of waiting (Blanket or not)



WOT = temps rose steadily (Couldn't maintain WOT for too long in the areas I drove)



I have to admit the variables involved and slowness of the sensor make the testing difficult. I do see some help from the blanket, mostly at lower speeds. Once at higher speeds the air under the hood seemed to cool significantly.



Everyone I talked to seems to be of the opinion that the intercooler works on a percentage basis. It cannot cool all the air through it to one temperature. The hotter the air in the hotter the air out.



Personally I like the blanket for the lower speeds. Going on feel of the filter after long runs it is cooler to the touch. So it has to be helping some. Knowing the small gains would I drop that much money again... . Probably not.



If I get really gung ho with this I might put the stock box back on and check temps with the snorkle removed (As this is how most use it) just to see if there is any great heat drop pulling air from the near the fender area.



I guess this would be more like my 20¢ worth



Garrett



EDIT: Disregard the dashes. I typed all spaces and the message showed up without, kinda condensed everything.

 

[JGK]

Big White,



I have been doing the same thing with a thermometer from Radio Shack. I drilled a hole in the BHAF just where the hose clamps to the filter and dangled the sender inside. After things warm up it is not unusual to see high 90 and low 100 degree temperatures going into the turbo while cruising around town. Outside air temps lately have been in the 80s. If you stop at a store, when you come out and fire up the beast the air temps read 120+ for a while. The side of the filter next to the filter gets roasty-toasty. Definitely need a shield.



I've also been doing some vacuum testing in the airbox and filter with a simple set up that uses a length of 1/4 inch vinyl tubing in a loop with some colored water in it. So far, the BHAF shows minimal pressure drop when you get on it to merge on the freeway. The stock air box, even with a Psychotty-esque snorkle between the box and a hole in the firewall I built shows a vacuum drop.



Inside the box, temperatures cool down quickly since it gets air directly out of the fender and through my snorkle into the firewall.



Someone with more time and talent that me needs to figure out how to build an inexpensive but effective shield for the BHAF.



Jay

 

[Todd T]

Mopar to you, and others.



the aftercooler, is only as efficient as the inlet air charge temperature and the outside ambient temperature will allow.



the ONLY thing we can control, is to not allow the inlet temperature to be hotter than the outside air temperature. thus relocating where the engine draws air from and then shielding that air (insulating the tubing, exhaust maniflold etc. ) from the heat of the engine bay.



the air (as you know is compressed. ) when ran through the turbine. which then heats the air. the aftercooler then has to take that heat back out, as fast as it can, as it passes through.



most of the reason you guys see EGT's come down with the bigger filter, is do to the turbo not having to SUCK air as hard. not so much that the air is cooler. your just getting more in.

 

[SlyBones]

Originally posted by JGK

Someone with more time and talent that me needs to figure out how to build an inexpensive but effective shield for the BHAF.

tmarti96 says earlier in this post that this filter works with the Jannetty shield. I asked if he made any modifications. The email response was NO. Worst case is drill new holes for the shield and mount it offset just a bit.



Waiting to see what people come up with for a sock for this thing. I am interested in the MoparGuy Filter with Jannetty SS Heatshield and custom sock. -- This should easily be as good as the K&N version of the same setup.

 

[Kent Kuykendall]

I put on one of these filters and towed this weekend and it made a big difference on EGT's.



Kent

 

[Jim Fulmer]

Air filter update!

Went by cummins today thinking they had BHAF that I ordered but it was another What they did have was one just like it but in an enclosed plastic case the got it's air from the front around the 4" tube inlet, it would obviously keep more water and heat away from the filter than the AH19037, the problem is the 19037 flows 915cfm and it flows 500+... . Thought I would pass that along!

P. S. I didn't check the price



Jim