6637 question
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
I agree. This one probably made the most sense out of any other explanation of this. You might've even convinced me. BUT most "other" folks in the know says Ford did it because customers were complaining about turbo noise. Maybe it was both situations. Don't know that we'll ever find out.
Also, the "stuff" under the Ford insulation isn't spray-on. It's fiberglass. Have a look -- this is what was under mine when I pulled it off:
Also, the "stuff" under the Ford insulation isn't spray-on. It's fiberglass. Have a look -- this is what was under mine when I pulled it off:
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
You also need to operate an engine for 2 or 3 minutes at sustained boosts of 22 psi and higher before the "heat capacity" of the intercooler saturates and you get the maximum "steady state" MAT reading. During Tenn's measurements he was towing his boat and he had his ATV in the bed of his truck so that he could put a higher load on his engine but he was in traffic on the interstate and had to lag back to leave a gap then do a relatively short acceleration run at high boost and then let off the throttle.
If you look at Tenn's data table you'll see his measurements such as a MAT of 129 F when his measured IAT was 145 F and you'll see my computer model corrections (in blue) of his 129 F MAT measurement to a corrected "steady state" MAT of 166 F to 169 F which is the "steady state" MAT reading Tenn would've measured if he could've maintained his high boost run for 2 or 3 minutes such as when towing up a long grade. But I'll have more to say about this later.
If you look at Tenn's data table you'll see his measurements such as a MAT of 129 F when his measured IAT was 145 F and you'll see my computer model corrections (in blue) of his 129 F MAT measurement to a corrected "steady state" MAT of 166 F to 169 F which is the "steady state" MAT reading Tenn would've measured if he could've maintained his high boost run for 2 or 3 minutes such as when towing up a long grade. But I'll have more to say about this later.
"You need to operate an engine for 2 or 3 minutes at sustained boosts of 22 psi and higher before the "heat capacity" of the intercooler saturates and you get the maximum "steady state" MAT reading."
OK Gene, Mike was pulling what, maybee 3,000-4,000 lbs with the boat & ATV up I-24. In order to get 22 lbs of boots for 2-3 minutes I would guess he would be screaming well over the speed limit to make that happen! IIRC pulling my 5th wheel up that part of the interstate I was barely at 15 lbs of boost at 70 mph.
Your equations make sense an your education is exceptional but the envelope you are working in is approaching the extreme.......
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Very interesting though that the Aussie models had no foil. How strict are emissions standards in Australia?
Postmaster
Joined: Jun 2006
Posts: 2,647
Likes: 0
From: Fulltime RVer
1) If you believe my argument for the foil then you don't have it because your truck doesn't have to pass the EPA city driving loop test.
2) If you believe the argument for the foil that's been cited by Izzy and most others on this forum then Ford thinks that you guys are "tone deaf" and can't appreciate the reduction in turbo whine due to the foil.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
That would seem to support what Gene has been saying about the foil being added for emissions reason. Very interesting!
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Don't forget that "emissions" can mean noise emissions, too. Certain parts of the country have strict rules about how much noise vehicles can produce too. Why do you think they put all that sound deadening stuff on the new trucks now? Out of the kindness of their hearts?
I don't think they're tone-deaf, Gene. I think they don't have as many whiny people complaining about how loud a vehicle is.
I don't think they're tone-deaf, Gene. I think they don't have as many whiny people complaining about how loud a vehicle is.
Elder User
Joined: Feb 2007
Posts: 857
Likes: 0
A little over two years ago, one of the latching tabs broke off of my stock air box. Through this board, I learned about the 6637. I drove over to NAPA, paid about $28 and spent 10 minutes removing the old air box, cleaning the inside of the hose and then installing the original hose over the 6637 using the original clamp. 10 minutes and I was finished and it was a whole lot cheaper than replacing the factory air box.
It's never come loose and the truck has always performed exceptionally well when towing. I'm quite happy with the 6637 mod.
It's never come loose and the truck has always performed exceptionally well when towing. I'm quite happy with the 6637 mod.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
You joined the same time I did, Bill. I found this site because of the CCV mess in my engine bay. Mod'ed that, then put in the 6637, and so on -- my mods are listed chronologically in my sig. See what this site did to me??
Hotshot
Joined: Nov 2006
Posts: 11,286
Likes: 262
From: North of Greenville
Yep, you guys joined up only a couple months after I did as well, but I really did not get active with my participation until about a month ahead of you guys.
Joe, I don't think we're gonna find an end to our thinking alike. I;ve always tried to keep my mods listed in a chronological order as well.
Joe, I don't think we're gonna find an end to our thinking alike. I;ve always tried to keep my mods listed in a chronological order as well.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
LMAO!!! Pete you and one other member here I've come to find out are SOOO much like me, it's not even funny... Quite scary, actually. Lisa said she noticed it too -- it's like whatever draws a lot of us to these trucks is some kind of common personality trait. Go figure. 