Homemade BHAF Mod?
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Homemade BHAF Mod?
Has anyone done a homemade BHAF ( Big Honkin Air Filter) mod in a non turbo IDI truck? I'm thinking about doing one to my son's 89 7.3l F250 we just bought. I think if I relocate the window washer and overflow bottle it could go there but I haven't measured. I've seen the ramair setups but see a concern with water.
Lead Driver
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From: Campbell River, B.C.
BAHF, I haven't heard that one before! I don't know if anyone has done that before, but ram-air has been done several times over. I have run mine for over a year now and never had a problem with it, others have run them for much longer. Unless you are crossing water thats up to the grill, there shouldn't be any problem. Some claim as much as 4spi of boost at 70mph, but I never measured mine without the turbo.
Last edited by David85; May 22, 2007 at 03:23 PM.
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Originally Posted by David85
BAHF, I haven't heard that one before! I don't know if anyone has done that before, but ram-air has been done several times over.
Lead Driver
Joined: Nov 2003
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From: Campbell River, B.C.
Really? does it make a big difference? Diesels certainly need all the help they can get when it comes to breathing, thats why turbocharging works so well on them. If the truck doesn't already have it, you may want to consider a 3" (or larger) exhaust.
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Originally Posted by David85
Really? does it make a big difference? Diesels certainly need all the help they can get when it comes to breathing, thats why turbocharging works so well on them. If the truck doesn't already have it, you may want to consider a 3" (or larger) exhaust.
Post Fiend
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From: Nutter Fort, WV
I don't ford streams up to my headlights, rain has never been a problem with my ram air.
Snow however is another story.
The first winter I installed the ram air, I was plowing snow, it was almost white out conditions at times.
Suddenly at about 3 AM the engine lost lots of power and then the engine died.
Found a coat of frozen snow had built up on the air filter, choked it off.
Now I just unhook the hose from the ram air scoop to the air box when it is snowing, no problems in several years.
On the 86 model, the air intake is 6 square inches in area.
The scoop I built is 40 square inches at the front of the radiator shell.
Snow however is another story.
The first winter I installed the ram air, I was plowing snow, it was almost white out conditions at times.
Suddenly at about 3 AM the engine lost lots of power and then the engine died.
Found a coat of frozen snow had built up on the air filter, choked it off.
Now I just unhook the hose from the ram air scoop to the air box when it is snowing, no problems in several years.
On the 86 model, the air intake is 6 square inches in area.
The scoop I built is 40 square inches at the front of the radiator shell.
Last edited by Dave Sponaugle; May 22, 2007 at 08:18 PM.
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brent9111
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
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Jun 5, 2007 04:54 AM
