Overheating has ME overheated!! 2nd Electric fan(s), I think it's not the fan or radiator

[biomedtechguy]

Got a 7 blade 19 inch not sure if it is GM or Mopar no numbers on it. If you can use it it’s yoursView attachment 1007553

Thanks for the offer, seriously, but I am hoping the electric fan works on the Roadrunner, and I have a couple of options for the GOAT.
Honestly, I am switching to "last week, crunch time" mode, but I am definitely going to take the Pontiac water pump apart to check that gap between the water pump impeller vanes and the divider plate at some point, probably after CtC, and I honestly hope that's the problem, and I can put that two speed 16" electric fan back on.
IF ONLY my Roadrunner was finished, I could at least compare and if it does fine cooling the 440, I will know for sure it's not actually the fan on the GTO, but the damn thing doesn't overheat with the mechanical fan, but then again, the highway test should take the fan out of the picture!
If both electric fans on both cars fail to cool, I'm going to go off in a FIT OF RAGE (no firearms though) against the fan companies for selling bullshit to the public!

 

[Hemirunner]

I can relate. See the photo. Those flex fans are junk, by the way. Save your money. As for the electrics, most of those don’t move anywhere near the air they’re supposedly rated for. I have yet to meet an engine that can’t be cooled with a factory HD 26” radiator, belt driven water pump, HD 7 blade fan and stock shroud.

 

[biomedtechguy]

Well, that is quite a mess.
I'm committed to TWO Wraptor systems, and I've seen a lot of custom aftermarket serpentine belt systems.
It's definitely going to be interesting to see how the electric fan works on my Roadrunner.

 

[Hemirunner]

Mine lacked clearance between the fan and the lower tank. You can see where the fan blades hit the lower tank, dug in and bent, tearing into the core. I clearanced the tip Of the new fan blades to clear that area.

 

[coloradodave]

Bio: Ace hardware carries fine thread bolts...

 

[biomedtechguy]

Bio: Ace hardware carries fine thread bolts...

I found the length I was looking for at ACE Hardware today. Only in grade 8, but that's ok.
Thanks.
I had a buddy who owns an engine machine shop, that rebuilt our 421 in the GTO cut down the aluminum fan spacer to still clear the Wraptor pulleys and tensioner, but get it away from the radiator, because the factory radiator is all I have left.
I'm going to test drive it in a little while.

 

[Hemirunner]

I found the length I was looking for at ACE Hardware today. Only in grade 8, but that's ok.
Thanks.
I had a buddy who owns an engine machine shop, that rebuilt our 421 in the GTO cut down the aluminum fan spacer to still clear the Wraptor pulleys and tensioner, but get it away from the radiator, because the factory radiator is all I have left.
I'm going to test drive it in a little while.

How’d the test drive go?

 

[davek]

I hope you get it all set for CC,sorry about the radiator. Test Drive?

 

[themechanic]

Down to the wire and no time for purple hair do.

 

[biomedtechguy]

TEST DRIVE RESULTS ARE IN.....
Took the back highway at 55-60, AC off, 183-187
AC on, Max Temp: 190-195. I'm certainly good w/that....
On the Interstate, AC on, 4,500 RPMs at 85 MPH (to be sure I merged safely) then settled down to 3,500 RPMs at 72 MPH, and Max temp was 205, but mostly 198-203. Drove about 7 miles like that, exit, come back at 55-45 MPH, AC on some of the way temps back in the low 190s. Sat in the driveway, AC on, and in the 190s.

GOOD TO GO FOR CRUISIN THE COAST
After CtC, I'm compelled to take the Wraptor down to the point where I can take the front half of the water pump off and the divider plate, and put that plate on the front of the pump to see what the gap looks like and if neccessary (I think it will be) massage that plate to get the desired 1/10th inch gap clearance.
I doubt I'll get the Cold Case radiator repaired, just because I don't want to be reminded of that tragic impact with the clutch of the other fan. The 17" flex fan fits fine, with 1¼" between the furthest forward part and the radiator. I got on it and did a dead stop launch or 2 and no contact with anything. I will check the clearance to the Cold Case radiator and if I get at least 1" clearance, I'll probably order another one and sell the one I have and the factory radiator too.
If I find the gap was way off and the temp drops 5 or 10 degrees, I may try the 16" electric fan again at that time, or I'll put it up for sale I guess.
THANKS FOR THE SUPPORT AND ADVICE! You all helped me make it through.
Tomorrow morning I pick up my RXT dual clutch and when I bring it I'll program my RTX series gauge system.
Got this video from the shop owner today:

Lol...RXT...RTX...

 

[themechanic]

We're all wondering if the new fuel gauge will be accurate.

 

[biomedtechguy]

Down to the wire and no time for purple hair do.

Appointment for purple Mohawk is this Saturday...
Appointment to get ALL of my hair cut off, a week later on Monday...

 

[biomedtechguy]

We're all wondering if the new fuel gauge will be accurate.

I'll have an idea on how the fuel gauge reads on the GTO soon because I got a "Low Fuel %" message, around 1/8th gauge reading.
I'll set the DD gauges up on the Roadrunner tomorrow. I believe there is a standard resistance factor chart so I'll look up my factory fuel level sender's resistance on the chart and plug in that value and see.

 

[HEMI-ITIS]

Congratz!!! You pulled it off. Now get your cooler & yourself ready for CtC!!!!!

 

[biomedtechguy]

Congratz!!! You pulled it off. Now get your cooler & yourself ready for CtC!!!!!

Thanks my brother, but I'm a ways off from "ready"...
I still have to change the oil and filter on the 421GOAT, check the driver's side bucket seat bracket because the slide adjustment lever "catch" is popping out and that is causing problems for my 4'11" tall wife. It's not good when she presses the clutch pedal down and the seat slides back. This is something I just found out about a week or 2 ago, but I have stayed on the overheating problem because without that being resolved, nothing else mattered. Check the gear oil level in the Muncie.
Tomorrow morning I pick up my BAD *** dual clutch disc setup from the UPS hub. I have such EXTREMELY HIGH expectations for the performance of the RXT 6923-05 by McLeod, AND I expect the legendary, celebrated "low pedal effort" to resolve the firewall flexing issue (although there's a turnbuckle reinforcement the shop just installed) AND per McLeod's recommendation, I skipped the organic RST 800HP and the RXT uses ceramic metallic friction material, and is rated for 1,000HP.
I am not going to miss the 2,950 pound pressure plate, although it served me very well and never chattered, smoked, or slipped, it was BRUTAL on my knee.
Bring that to the shop, program the DD gauges (I'm really excited about doing that) and set up the DD fan control module. Depending on the status of the rest of the Roadrunner dictates what is next. I'll still need 2 new front tires, replacing the SECOND (and should be LAST) pair of front tires my old factory front suspension ruined in a matter of a couple of months. I have to get the front suspension aligned, and not "just any" shop will or knows how to adjust the SPC UCAs, etc...
Adjust rear triple adjustable Viking shocks for "street cruising" and I'll talk with Mr Kim at Smith Racecraft about a preliminary setting for the Assassin traction bars. Make any adjustments to the Viking front shocks if needed.
Oil and filter change for the Roadrunner.
BOTH cars need to be washed and detailed....
THEN I'LL BE READY!!

 

[themechanic]

Someone famously once said, "all I lack is finishing up".

 

[biomedtechguy]

Yeah well, I'm going to "relax" by watching Tucker Carlson...lol..
I should be posting some very colorful, "sparkly" and entertaining videos of my Dakota Digital gauges tomorrow.
Thanks again!

 

[davek]

I can relate. See the photo. Those flex fans are junk, by the way. Save your money. As for the electrics, most of those don’t move anywhere near the air they’re supposedly rated for. I have yet to meet an engine that can’t be cooled with a factory HD 26” radiator, belt driven water pump, HD 7 blade fan and stock shroud.

View attachment 1007564

what brand flex fan was it?

 

[biomedtechguy]

The one I am using, in the GTO, is a
Flex-A-Lite 17" Flex Fan
Breaking News...
Dakota Digital tech EPIPHANY...
I went to the shop where my Roadrunner is today to program the RTX series Dakota Digital gauges, and the same model electric fan control module as the GTO has. Well I have the 17" version of the 16" fan that didn't work in the GTO. It turns out that the settings for "FAN MODE" has to be set to "TWO" not "DUAL" for the high speed function of the fan to work, because it requires both 12v power sources to be activated to go to high speed. I tested the "low" and "high" button of the DD Fan Module control app, and unlike the GTO fan, I could easily hear the difference between "low" and "high" speed operation.
My mechanic had his own "old school" way of testing the fan air flow: he took a common red shop rag and opened it up, and held it in front of the AC condenser. On "high" speed, the fan pulled enough air through to easily hold the rag on the vertical face of the condenser.
The fan in the GTO never ran on high speed!!
The Roadrunner is supposed to be released from shop jail Thursday. I found a local tire and alignment shop that actually knew what "SPC UCAs" are, and they are going to do the alignment Thursday or Friday.

 

[HEMI-ITIS]

Git er done!