Engine/Transmission (1994 - 1998) BHAF question...

[tp0d]

Just got my BHAF installed today (fleetguard AH19037). Upon removing the airbox, I have 3 3/4" long studs sticking up, just waiting to impale the filter. Since the inner fender is a b*stard to remove, how does one remove these bolts. . ? Are they tack welded to the other side of the wheelwell or are they threaded in. I would think tacked...



Otherwise, I`m lovin my new bhaf, the thing is completely different than the stock. Better spool, less egt, and the increased turbo whine are way worth it. I was considering the marine version, but it was over twice the cost ($104 compared to 42).



all good...



-jerry

 

[bmoeller]

Some put the nuts that hold the OEM housing on the studs, then just let the filter sit on them.



I used a length of 1"x 2" wood, with 2 holes, to go over the studs. I then have the filter zip-tied to it.



Check to see if the filter is resting on the aluminum A/C line. If it is, put something over/around it so it won't wear a hole in it.

 

[CumminsPower98]

Leave the studs in place and install some short pieces of rubber fuel hose over them that is just long enough to cover the studs. I usually angle cut them a bit so they kind of cradle the filter. One other thing you should do is slice a piece of 5/8" heater hose and place it over the A/C line as the end of the filter will rub on it. This has worked very well for me and other trucks I have put these on.



bmoeller, you beat me to it.

 

[tp0d]

cool... thanx for the replies guys... glad I didnt try to take those studs out. . they seem pretty solid heh. . I have a piece of 1x4 in there now, prolly gonna solid mount it, and isolate it from the AC line also...



has anyone used the marine version of the AH19037? I`m wondering what the actual difference is, other than the marine is waterproof...



-j

 

[moparguy]

On both of my trucks, I use a big hammer and drive the studs down, and out of the fender. Provides a bit of additional clearance for the BHAF. If you have a thick insulation pad on the hood, it can touch.



I also glue a small piece of rubber on the fender to keep the filter from wearing the paint at the contact point.



Although I haven't tried it, I suspect you could reinstall the stock filter box and it would set in place without the studs. I just don't see ever running the stocker again.



RJR

 

[JGheen]

Hey guys, real quick, what is the BHAF part number from Napa? Isn't it like 9270 or something like that?



Thanks, Joe

 

[CumminsPower98]

Napa #2790

 

[JGheen]

Thanks '98. New it was something along those lines...

 

[JGheen]

Jeeez!! $63 for that BHAF @ Napa! Is that the normal price? I thought that was a little high for just a big paper air filter.

 

[CumminsPower98]

That's about what my Napa wants, it's crazy! I now get the same filter at Carquest for about $40. Carquest number is 87790.

 

[JGheen]

Cool! I'll have to give them a call. Thanks again, '98!Oo.

 

[wlacroix]

Igot mine from cummins for 34$ plus tax

 

[biggy238]

Will I actually see a performance gain over my "BRAND NEW" K&N I just put in? I kinda hate to ditch it already. Tell me if it's worth it or not. . I love the turbo whine though. Can't I cut the non filtered side of the stock box and hear it better?

 

[tp0d]

ditch that stock box and the k&n. on hard acceleration the k&n can let in too much crap. the BHAF is better all around, much more air flow. surface area is about twice the size of a stock, far as i can see... I had a napa gold air filter in my stock prior to my BHAF, I wouldnt go back if someone paid me... well... depends on what they offered



jus my 2c



-jerry

 

[JO'Leary]

Found this filter test on another site. It's long but good reading.

Skip to page #11 and check out the dirt passing filter #'s.

I have removed all of my K&N filters.



http://dieselplace.com/forum/forum_posts.asp?TID=10642



Joe

 

[wtrenholm]

As for the studs sticking up, I jammed double nuts on the studs and put a shock bushing (about an inch around, from a straight stud style shock) provides a larger area and no damage to the wire mesh on the filter.



Later,

Wayne

 

[CarlJensen]

Is there enough room in there to use the old studs to mount a metal plate with a right angle on it to use for cradle for BHAF and form a heat shield of sorts or is the clearance to hood too close? Has anybody tried this or similar?

 

[CumminsPower98]

Yes, you can build a mount like you describe. There used to be a guy on here making and selling them. I don't know if this is still going on or not.

 

[Forrest]

Originally posted by CarlJensen

Is there enough room in there to use the old studs to mount a metal plate with a right angle on it to use for cradle for BHAF and form a heat shield of sorts or is the clearance to hood too close? Has anybody tried this or similar?

Yep ... you need to stack a bunch of washers or double nut those long studs. Also, I drilled a hole in the metal plate so the top of the shock wouldn't vibrate on it.

 

[CarlJensen]

Sounds good. What did you use, if anything, to help as a heat shield? I am thinking of some of the roll heat shield material cut to size.