BHAF service - and a heads up!

Gary - K7GLD · 06-23-2006, 08:24 PM

My BHAF was getting sorta grungy on the outside:

UGHHHHhhhh!

SO, time to see what was needed to get the intake back up to snuff. Took off the Outerwears, revealing the underliner my wife sewed up for me while I waited for the Outerwears to arrive - I had also applied some K&N filter oil to that liner that was left over from my K&N filter days:

HMMmmm - not bad, but not good either - better pull it off too, and check out the actual NAPA BHAF filter media to see what it looks like:

WOW! Not bad at all - in fact, it looks as clean as when it came out of the original box!

OK. so a look around in the BHAF mount area turned up this surprise:

A closer look:

HMMmmmm - a contact point of wear, a "dimple" where the end of the BHAF has rubbed into the air conditioning line - not good!

(MORE BELOW)

__________________
White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

Gary - K7GLD · 06-23-2006, 08:25 PM

(CONTINUED)

Here's the correction:

Some hose split, and placed over the line to protect it - that line also sits directly upon the inner fender well - and is exposed to point of contact wear there as well, so the hose fix takes care of 2 points for the price of one - sure glad I caught the problem before the A/C line was punctured!

SO, washed both covers, and re-installed the BHAF:

Finished!

So what's the point?

Well, one point is that the Outerwears, plus the added inner lining, can greatly provide beneficial pre-filtering for the BHAF, extending it's service life without any detectable added airflow restriction.

Second, is that it's a good idea to check out the after effects of some of our "shade tree re-engineering" - sometimes we just might be trading one problem for another...

It's also worth noting that close examination of the neck area where the BHAF attaches to the stock intake tube was showing signs of buckling/crushing from the hose clamp - I had a short section of 4 inch exhaust tubing I had originally picked up for reinforcement at that point - but thought it wasn't needed due to apparent strength of the BHAF neck - I was wrong!

__________________
White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

dodgentwo · 06-23-2006, 08:49 PM

Gary, thanks for the heads up, will be checking ours in the morning. Providing ours hits in the same spot as yours.

__________________
'97, 2500 Red 4x4, 5spd Reg. Cab, Kinda stock

'97, 2500 White/Gray 4x4, 5spd Club Cab, Hydraulic dump bed, kinda stock

***AK RAM*** · 06-23-2006, 11:55 PM

Surprising that the BHAF was so clean. How many miles on it?

__________________
03, 4X4, QUAD, LWB, Standard Output, 47RE, 3.73, ATS TC/VB, DTT Trans/Billet, Flex Plate, TorqLoc, RAD, Twins, Snow, Hot Cp3, Injectors, Cam, 315s, 8,200 lbs wet.
12.32 @ 109 Videos: Vid 1 & Vid 2

Add yourself to the Cummins Forum Map.

06-24-2006, 06:25 AM

Good info and a good write up on it Gary........thanks for the heads up

***Tom05*** · 06-24-2006, 07:17 AM

Excellent Gary!!

Thanks for the info.
Tom

__________________
www.midwestdieselconnection.com

BSouth · 06-24-2006, 09:24 AM

Awsome thanks for the heads up!

__________________
05 3500 Yellow 6 speed, Mega cab dually fenders, Rumble Bee Scoop, Edge Juice w/ A2, Striker 2, 5" Silverline exhaust, Icebox with torque tube, Rokktech, Boost fooler, Brite Box w/ Fogzilla

Gary - K7GLD · 06-24-2006, 09:30 AM

Quote:

Originally Posted by AK RAM

Surprising that the BHAF was so clean. How many miles on it?

About 10K miles - sure glad I checked it when I did!

__________________
White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

billmac · 06-24-2006, 04:43 PM

Gary, just curious but have you dynoed your truck with and without the prefilters on your BHAF? Looks to me like you would have some significant airflow restriction with both of those prefilters. I used an Outerwears cover on my old BHAF for but left it off of my new filter. The only reason I used the cover was for possible water protection. I read somewhere on another website that the Outwear covers do restrict airflow more so than what the advertisements and sales people say. I'm using the Fleetguard AH19004 marine version now and according to Cummins/Fleetguard specs this filters capacity is 825 g per SAE J726. I figure the filter should be good for 2 years in the Texas heat and dust. After that, the filter will probably start to deteriorate anyway.

__________________
2002 2500HD QC Laramie SLT SB; 2WD; Auto; 3:54 AS; Camper/Tow Pkgs; 4" Exhaust; Optima Redtops; Rancho RS9000X shocks; DSS; Isspro EV 30psi mechanical FP gauge; Vulcan 3/8ths LP relo kit to VP44; Mag-Hytec diff cover & tranny pan.

Gary - K7GLD · 06-24-2006, 05:46 PM

Bill, as far as I can see, and based upon what my filter minder indicates, the airflow with my BHAF as seen installed above has YET to show ANY restriction. And that SAME filter minder dropped to the 2/3 restriction mark the very FIRST steep Sierra grade I hit towing our 5er with the stock OEM filter - and that was before the considerable power mods I'm now running!

I figure my truck is about 425 HP and mid 900's torque if I go full bore with the stuff I have installed.

Could I get a few more ponies out of it without the added outer cover(s)?

Perhaps - but pretty insignificant, percentage-wise - and FAR less value to me than the added filtration they seem to be providing.

__________________
White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

Gary - K7GLD · 12-11-2006, 10:24 AM

Worth moving to the top for new guys - TTT

__________________
White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

piperca · 12-11-2006, 10:57 AM

Gary, it might be my monitor, but is there a pink tinge on some of the pleats of the filter? Could that be the K&N oil being pulled through?

__________________
1999 2500 SLT, QC, LB, 2WD, Auto, 4:10's, VA V5, RV275, S&B Intake, AFS Big Dog Fuel System, Vulcan Draw Straw, Isspro Fuel Pressure, Westach Boost/EGT Combo, CSS front springs 2" over-stock, KYB MonoMax, DTT Noise Filter, "Dreaded 53 Block", New VP44 @ 135k.

Future Mod: Swanker Intake Horn

06-23-2006, 08:24 PM	#1 (permalink)
Gary - K7GLD Tech Specialist Join Date: Nov 2005 Location: Canyon City Oregon Posts: 1,361 Gary - K7GLD's Truck Pics	BHAF service - and a heads up! My BHAF was getting sorta grungy on the outside: UGHHHHhhhh! SO, time to see what was needed to get the intake back up to snuff. Took off the Outerwears, revealing the underliner my wife sewed up for me while I waited for the Outerwears to arrive - I had also applied some K&N filter oil to that liner that was left over from my K&N filter days: HMMmmm - not bad, but not good either - better pull it off too, and check out the actual NAPA BHAF filter media to see what it looks like: WOW! Not bad at all - in fact, it looks as clean as when it came out of the original box! OK. so a look around in the BHAF mount area turned up this surprise: A closer look: HMMmmmm - a contact point of wear, a "dimple" where the end of the BHAF has rubbed into the air conditioning line - not good! (MORE BELOW) __________________ White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

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06-23-2006, 08:25 PM	#2 (permalink)
Gary - K7GLD Tech Specialist Join Date: Nov 2005 Location: Canyon City Oregon Posts: 1,361 Gary - K7GLD's Truck Pics	(CONTINUED) Here's the correction: Some hose split, and placed over the line to protect it - that line also sits directly upon the inner fender well - and is exposed to point of contact wear there as well, so the hose fix takes care of 2 points for the price of one - sure glad I caught the problem before the A/C line was punctured! SO, washed both covers, and re-installed the BHAF: Finished! So what's the point? Well, one point is that the Outerwears, plus the added inner lining, can greatly provide beneficial pre-filtering for the BHAF, extending it's service life without any detectable added airflow restriction. Second, is that it's a good idea to check out the after effects of some of our "shade tree re-engineering" - sometimes we just might be trading one problem for another... It's also worth noting that close examination of the neck area where the BHAF attaches to the stock intake tube was showing signs of buckling/crushing from the hose clamp - I had a short section of 4 inch exhaust tubing I had originally picked up for reinforcement at that point - but thought it wasn't needed due to apparent strength of the BHAF neck - I was wrong! __________________ White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

06-23-2006, 08:49 PM	#3 (permalink)
dodgentwo Tech Specialist Join Date: Dec 2005 Location: lancaster, oh Posts: 389 dodgentwo's Truck Pics	Gary, thanks for the heads up, will be checking ours in the morning. Providing ours hits in the same spot as yours. __________________ '97, 2500 Red 4x4, 5spd Reg. Cab, Kinda stock '97, 2500 White/Gray 4x4, 5spd Club Cab, Hydraulic dump bed, kinda stock

06-23-2006, 11:55 PM	#4 (permalink)
*AK RAM* Tech Specialist Join Date: Feb 2006 Location: Alaska Posts: 2,602 AK RAM's Truck Pics	Surprising that the BHAF was so clean. How many miles on it? __________________ 03, 4X4, QUAD, LWB, Standard Output, 47RE, 3.73, ATS TC/VB, DTT Trans/Billet, Flex Plate, TorqLoc, RAD, Twins, Snow, Hot Cp3, Injectors, Cam, 315s, 8,200 lbs wet. 12.32 @ 109 Videos: Vid 1 & Vid 2 Add yourself to the Cummins Forum Map.

06-24-2006, 06:25 AM	#5 (permalink)
Guest Posts: n/a	Good info and a good write up on it Gary........thanks for the heads up

06-24-2006, 07:17 AM	#6 (permalink)
*Tom05* Diesel Head Join Date: Dec 2005 Posts: 4,443 Tom05's Truck Pics	Excellent Gary!! Thanks for the info. Tom __________________ www.midwestdieselconnection.com

06-24-2006, 09:24 AM	#7 (permalink)
BSouth Diesel Head Join Date: Mar 2006 Location: Joplin MO Posts: 1,316 BSouth's Truck Pics	Awsome thanks for the heads up! __________________ 05 3500 Yellow 6 speed, Mega cab dually fenders, Rumble Bee Scoop, Edge Juice w/ A2, Striker 2, 5" Silverline exhaust, Icebox with torque tube, Rokktech, Boost fooler, Brite Box w/ Fogzilla

06-24-2006, 04:43 PM	#9 (permalink)
billmac Newbie Join Date: Mar 2006 Location: Texas Posts: 15 billmac's Truck Pics	Gary, just curious but have you dynoed your truck with and without the prefilters on your BHAF? Looks to me like you would have some significant airflow restriction with both of those prefilters. I used an Outerwears cover on my old BHAF for but left it off of my new filter. The only reason I used the cover was for possible water protection. I read somewhere on another website that the Outwear covers do restrict airflow more so than what the advertisements and sales people say. I'm using the Fleetguard AH19004 marine version now and according to Cummins/Fleetguard specs this filters capacity is 825 g per SAE J726. I figure the filter should be good for 2 years in the Texas heat and dust. After that, the filter will probably start to deteriorate anyway. __________________ 2002 2500HD QC Laramie SLT SB; 2WD; Auto; 3:54 AS; Camper/Tow Pkgs; 4" Exhaust; Optima Redtops; Rancho RS9000X shocks; DSS; Isspro EV 30psi mechanical FP gauge; Vulcan 3/8ths LP relo kit to VP44; Mag-Hytec diff cover & tranny pan.

06-24-2006, 05:46 PM	#10 (permalink)
Gary - K7GLD Tech Specialist Join Date: Nov 2005 Location: Canyon City Oregon Posts: 1,361 Gary - K7GLD's Truck Pics	Bill, as far as I can see, and based upon what my filter minder indicates, the airflow with my BHAF as seen installed above has YET to show ANY restriction. And that SAME filter minder dropped to the 2/3 restriction mark the very FIRST steep Sierra grade I hit towing our 5er with the stock OEM filter - and that was before the considerable power mods I'm now running! I figure my truck is about 425 HP and mid 900's torque if I go full bore with the stuff I have installed. Could I get a few more ponies out of it without the added outer cover(s)? Perhaps - but pretty insignificant, percentage-wise - and FAR less value to me than the added filtration they seem to be providing. __________________ White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

12-11-2006, 10:24 AM	#11 (permalink)
Gary - K7GLD Tech Specialist Join Date: Nov 2005 Location: Canyon City Oregon Posts: 1,361 Gary - K7GLD's Truck Pics	Worth moving to the top for new guys - TTT __________________ White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

12-11-2006, 10:57 AM	#12 (permalink)
piperca Tech Specialist Join Date: Feb 2006 Posts: 335 piperca's Truck Pics	Gary, it might be my monitor, but is there a pink tinge on some of the pleats of the filter? Could that be the K&N oil being pulled through? __________________ 1999 2500 SLT, QC, LB, 2WD, Auto, 4:10's, VA V5, RV275, S&B Intake, AFS Big Dog Fuel System, Vulcan Draw Straw, Isspro Fuel Pressure, Westach Boost/EGT Combo, CSS front springs 2" over-stock, KYB MonoMax, DTT Noise Filter, "Dreaded 53 Block", New VP44 @ 135k. Future Mod: Swanker Intake Horn