carolina.boostin
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Started working on putting on a 6 inch tip
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wow, good info.. but how does it work when swamps has made over 800hp on one 6637 (only the donaldson version) with that calculation?I stole this when I was doing some research filters.
All CFM numbers were between 16" H2O and 20" H2O (from what I read, this is the optimal range to determine the most true CFM flow for the calculated 631 CFM flow for the 7.3 Powerstroke).
From the Donaldson Air Cleaner Selection Guide: To find the correct CFM of a filter in a more simplistic calculation, you use the following formula:
Airflow (CFM) = HP (SAE) x SA
Where HP is listed at maximum value and a certain RPM, on the stock 7.3 Powerstroke, this = 275 HP
SA = (Specific Airflow) per HP. There are different values for 4-stroke, 2-stroke, natural aspirated vs turbo, etc. For the 7.3 Powerstroke, this number is 2.3
So, CFM = 275 HP X 2.3 SA, CFM = 632.5
This is a CFM airflow rate at the maximum HP your truck outputs. Replace the HP # to find out what CFM filter you would need.
The AIS is rated at 650 CFM. So, 650 = xHP X 2.3. 650/2.3 = 282.6 According to the Donaldson filter guide's equation, the AIS is good up to 282.6 HP.
*I did find other reputable companies that had calculations and they all were consistent with one another.
The problem with that statistic is that no intake vacuum data was included.wow, good info.. but how does it work when swamps has made over 800hp on one 6637 (only the donaldson version) with that calculation?
the moral has been around for a few years now.. lol.. i did the dual donaldsons a few years back and have threads on psa and the other place we dont mention anymore(psn) and found the exact same results. i may go back to the dual setup once i get a bigger set of injectors and a higher flowing drop in turbo in my dually.For me, that speaks more to the ability of what ever manly/capable turbo was installed. It would be very interesting to see the hp numbers from an open intake and 2 filters.
In the real world, I had a lot of smoke (ZF5 and 3.55 gears) with one filter. Very little smoke with an open intake and "some" smoke ( I can see behind me) with two. I made the two 10.5" Donaldson filter option permanent.
For anyone who would like to "see" the difference? I installed a port in one filter (closed end) and ran a temporary hose into my cab and can see the numbers on my manometer. (dead simple to make)
The morale of the story: the easier you can make drawing air for a turbo, that will result in less smoke, more boost and faster spooling.
Had the windows painted yesterday. No more fish bowl! Wheels next.
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Second that !
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That is a great looking truck!
What wheels are you thinking of going with?
i apologize for the fuzy pics.. been a long day and i didnt eat today so i was a lil shakey.
live life full throttle
it does.. thanks again bud!! yeah no doubt.. i had you for a second though! i was literally laughing my ass off when i was typing what i said about the ziplock bags ripping and the lugnuts rolling around..Looks great Jake!!! And no worries about the rims. I'm glad they got there in one piece this time. Lol.
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thanks man.. a bit wide for me but i like them.Looking good Jake! Thought those rims looked familiar LOL