mikeyss
Full Access Member
My shroud number is this:
I'll try and snap pics if the motors later today
I'll try and snap pics if the motors later today
Keeping coolant and transmission temps under control when towing in the summer heat
- Thread starter Geotrash
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alpha_omega
Full Access Member
What gear ratio do you guys have in the rear end? I’m curious about the overall vehicle “stress” while towing and how much the different gear ratios play a role in the whole scheme of things with regards to temps. I know that my set up with the lower ratios supposedly tows better, but does that also help to keep the temps down by not causing everything else up front to not have to work so damn hard?
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George B
¯\_(ツ)_/¯
I have the max towing and K5L. Any info I can share? Pics or numbers?
gooffeyguy
Tom
Sure, if you can get the numbers from the motors. They're barely visible through the little bit of space between the housing and blade when looking down from the top
OP
OP
3.42 on both of mine.
OP
OP
Here is the number on the shroud from my 2012. Sorry for the fuzzy photo, but the number is 20923003.
And just for fun, here is the shroud number from my 2007. Both trucks are XL Denali's.
I also inspected the fan motors on both trucks carefully, and can't find any stickers that show part numbers anywhere on them, top or bottom.
And just for fun, here is the shroud number from my 2007. Both trucks are XL Denali's.
I also inspected the fan motors on both trucks carefully, and can't find any stickers that show part numbers anywhere on them, top or bottom.
that fan blade matches the one on this shroud I bought that is supposed to be 700w
I wonder what the backside of a 5 blade non-rimmed 500w fan blade looks like, there must be a design difference between the two more plastic or something on the 700w
the shroud I bought that is supposed to be 700w doesn't have any room to take a photo like that except right in the back bottom where the harness plugs in but the numbers are not located there on the motor they are in a different spot, plus the plastic from the back of the fan is in the way.
can you take another shot but back up a little bit I can't tell what is shroud and what is fan
gooffeyguy
Tom
had the seller send me a replacement meter still get the same readings 2400-2600 cfm, with the left side being 2600 and right 2400 on high. 7/9 rimmed 700w
gooffeyguy
Tom
Odd, then maybe it's my meter?
I would think if I used the same settings I would get somewhat the same kind of reading, but mines waaay more.
How/where are you actually holding the meter sensor?
gooffeyguy
Tom
For me to get that reading with those settings it barely takes any air. Also notice the 1bft and only 1 arrow to get that same reading.
What is the x10 in the lower left of your screen for?
What is the x10 in the lower left of your screen for?
gooffeyguy
Tom
OK, I messed with my meter, cleared AL settings and re-entered 1.000 M/2 (which is 10.76 FT/2) and held it up to the minisplit head unit in my garage and I was getting a more "on par" reading
gooffeyguy
Tom
OK, retesting my drivers side fan, depending how/angle I hold it it will read x1 and high cfm like in the 8000/9000s, but while moving it around it will read x10 and be in the 1200/1300s
I have a vornado house fan that blows 8000cfm but it only get's the flow to X1, the fans on the truck get it up to x10
I posted on the local facebook neighborhood to see if anyone has the k5l fans so I can do a comparison test, it's a shot in the dark but lot's of them around here.
I've been following this thread as I have a fairly new to me 2008 Denali that has been running hot (engine) while towing my 4500lb travel trailer. I've changed the water pump, thermostat, swapped the radiator for a cold case two core and hooked up the oil and transmission cooler lines, added customized radiator baffles (the OEM ones are stupid expensive) and added a Derale larger transmission cooler. When towing up local hills with the AC on and my family in the vehicle, the engine temperature will touch 230, the transmission temperature has always stayed below 190. It always seems to go back down off throttle and on the flat will hover around 210 to 215. One thing that made a big difference for me was swapping out the Denali grille for a standard Silverado grillle. But the temperatures hitting 230 still concerns me.
gooffeyguy
Tom
I know the cfm Is supposed to be setup for the area being tested. Usually setup for air through a duct or corridor. An open fan probably has a special procedure or setting up like the physical size of the fan in square footage to get a more accurate reading.
Aren't your fans that you tested the K5L (700w) fans?
RooTBeeRthe1st
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60's 70's 80's
230 would be scary
On these, that's not bad considering what you're doing with it.
You need things and cooling systems are supposed to be capable of 260f I believe.
Yes I upgraded mine to the k5l 1st design 7/9 rimmed 700w, bought it used from a hummer and installed new motors, but if the 5/5 700w moves more air then I will switch it up.
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