Comments on: Modifying Air Cleaner Cover Ford 6.9L Diesel

By: TBWdracula2003

TBWdracula2003 — Sat, 31 Jul 2010 04:18:11 +0000

could you get any more anal about that stuff… you dont have to have all that crap…

By: lfkajsdljf

lfkajsdljf — Sat, 31 Jul 2010 03:25:09 +0000

perhaps he doesn’t like the idea of becoming blind and deaf as well as ending up with burnt hands.

By: LowlyPeon23

LowlyPeon23 — Sat, 31 Jul 2010 03:22:58 +0000

I just used a plasma cutter, it took a minute.

By: davie1971

davie1971 — Sat, 31 Jul 2010 02:58:24 +0000

what kind of power gain did you get from this????

By: predracer04

predracer04 — Sat, 31 Jul 2010 02:49:04 +0000

Works better to just dril the like 6 spot welds, or just go and get an early 6.9 top that didnt have one, as the only yar those came on with a 6.9 is 87.

By: artfd

artfd — Sat, 31 Jul 2010 02:13:34 +0000

Feel free to drill your own spot welds. I thought this way the most straight forward. Abrasive metal cutting wheels are much cheaper than drill bits & cut through sheet metal like butter. Besides all the noise & flying sparks are more fun than drilling.
This air cleaner top was from a 1983 F250, which was the first year the 6.9L diesel was available. It was far easier to cut off the soup bowl on the unit I have than to bother looking for one on the used market.

By: artfd

artfd — Sat, 31 Jul 2010 01:53:12 +0000

Sad to say, the price of diesel went up almost 75 cents a gallon between the time I did this & now. The truck has been fueled up & loaded all summer & fall. I haven’t driven it enough to even tell if it made any difference. Reports posted on the web give varying results on power & fuel economy. My intuition is that removing the soup bowl makes air flow into the engine less restricted, which is usually a good idea for diesels.

By: artfd

artfd — Sat, 31 Jul 2010 01:44:56 +0000

Would you lend it to me?

By: artfd

artfd — Sat, 31 Jul 2010 01:20:22 +0000

Thanks for your support! I didn’t want my video being used to describe the “Idiot of the Week”

By: 250sxwheeliepop

250sxwheeliepop — Sat, 31 Jul 2010 01:00:12 +0000

Sadly you wont gain any power from this mod, its been dynoed, just suction noise. HOWEVER certain year 6.9l came with no soup bowl but did have a reducer plate on the intake (in the center of where the filter sits). drill 6 spot welds and you WILL have a noticable difference. Nice Vid

By: artfd

artfd — Sat, 31 Jul 2010 00:15:06 +0000

Been running my truck for trips around the county for a year since doing this. I noticed no change whatsoever in engine noise. Fuel mileage is 20-25 mpg with nothing in the bed of the truck. I think this is excellent for a 5000-lb 25 year old vehicle.

By: freehgh

freehgh — Fri, 30 Jul 2010 23:19:01 +0000

Hi Artfd, are you doing this to increase gas mileage? thanks, mj

By: tpvalley

tpvalley — Fri, 30 Jul 2010 22:20:21 +0000

someone reckons upto 35mpg for the 7.3idi, I thought that sounded a bit high.
cool air is the most important thing, sometimes u can take off filter, get beter flow but the air is warm so bhp can be lost.

By: artfd

artfd — Fri, 30 Jul 2010 22:19:40 +0000

I thought it was worth a try to increase mpg. I can’t tell that it helped. It didn’t hurt anything.

By: tpvalley

tpvalley — Fri, 30 Jul 2010 22:09:59 +0000

@artfd
it may inprove flow it may not, but it will also increase intake air temperature as u r using air from top of engine as opposed to front of engine, warm air is less dense so u may actually loose power.
U would be beter off just replacing air ducting with larger bore tubing.