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Cooling on the street.... #3067310
08/12/22 11:03 AM
08/12/22 11:03 AM
Joined: May 2004
Posts: 11,956
Taxes & Virus's R-US, NY
Dragula Offline OP
I Live Here
Dragula  Offline OP
I Live Here

Joined: May 2004
Posts: 11,956
Taxes & Virus's R-US, NY
Anyone else have trouble cooling theirs on the street? I finally decided to bite the bullet and gave Wizard cooling a call. I had a quote a while back to have them make radiator and fan shroud, and never really come back in time to have them make it, nor did I have the cash...

Fast forward two years...Never really got the car out this year due to a snafu with my collector car company and I and I was marginally able to keep it cool...That was until the stronger fans I bought, melted all my wiring down.....

So this year I found a good deal on a radiator with 1.25" thick 2-row instead of the 1" thick 2-row I have now...Ordered it....Now my new fans won't fit the thicker core...call up wIzard cooling again, and this time for a fan shroud with two 14" brushed puller fans and built in catch can...Not cheap, but I was marginal last year, so I figured I wouldn't need the brushless fans.....Just a bigger brushed set...Should look nice..Not cheap..

I have done everything else I can think of.

Last edited by Dragula; 08/12/22 11:09 AM.

'70 Cuda,...605 Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown Hemi Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Cooling on the street.... [Re: Dragula] #3067320
08/12/22 11:22 AM
08/12/22 11:22 AM
Joined: Oct 2003
Posts: 11,327
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,327
W. Kentucky
A mopar viscous fan kit ended my cooling issues. I tried different pumps, radiators and electric fans. The belt driven fan was the last option before pulling the engine. This set up has now been on three engine combinations and still works great.

Re: Cooling on the street.... [Re: justinp61] #3067329
08/12/22 11:57 AM
08/12/22 11:57 AM
Joined: Jan 2003
Posts: 930
Odessa, Fl
B
blowndart Offline
super stock
blowndart  Offline
super stock
B

Joined: Jan 2003
Posts: 930
Odessa, Fl
Can you describe the cooling issue(s) that you are having? Too hot all the time, just when driving or just sitting at idle (such as sitting in traffic)? To answer your initial question, yes, I fought this for a while with the stoked hemi in my a-body. I finally resolved all cooling issues and it cools great, even with the AC on in the Florida heat.

Last edited by blowndart; 08/12/22 11:58 AM.
Re: Cooling on the street.... [Re: blowndart] #3067331
08/12/22 12:24 PM
08/12/22 12:24 PM
Joined: Sep 2005
Posts: 580
Deep DEEP SOUTH
LAD 524 Offline
mopar
LAD 524  Offline
mopar

Joined: Sep 2005
Posts: 580
Deep DEEP SOUTH
Big hemi specific deal here.

I've found elec water pumps will flow enough at idle and low speeds to cool well if the rest of the system is ok. Get on the fwy and at higher speeds the flow rate v heat being produced ratio changes....then temps change.Get off the fwy at lower rpm, temps drop 25 degrees in 45 secs.

You get to the point where sustained heat created by higher rpm overwhelms the pumps ability to flow at higher speeds, even if the all available air at speed gets through the core. Mech pumps would be different. Ambient temps play a role here too.

Having said that, I dont get over 205 max in the heat in sustained hwy runs. On the street/traffic light stop n go....185deg.

Just what I've come across with a big hemi in an A body. grin






Last edited by LAD 524; 08/12/22 12:26 PM.
Re: Cooling on the street.... [Re: blowndart] #3067332
08/12/22 12:24 PM
08/12/22 12:24 PM
Joined: May 2004
Posts: 11,956
Taxes & Virus's R-US, NY
Dragula Offline OP
I Live Here
Dragula  Offline OP
I Live Here

Joined: May 2004
Posts: 11,956
Taxes & Virus's R-US, NY
Once the Mega block gets up in temp in the big ole Hemi, I cannot get it back down...That is where I started. Then I put in a 55gal/hr water pump, it got a little better...Then I disconnected the built in tans cooler and it dropped about 10*, but still hot at 215* on a 90* day in traffic.

I took the thermostat out and left it out...Got a little better yet. Switched to better dual BeCool12" fans over the Flex-a-Lite and that helped a little..

What is weird is late last year, I killed the Firecore distributor and replaced it with an MSD....Totally different curves, and that helped the most. I am down to keeping it right around 205 on a hot day. Still not the 185* I want, but close.

So I ordered a new shroud and over sized 14" fans from Wizard Cooling, and I just got a Griffin 31x19 Rad with the 1.25 rows of tubes...


'70 Cuda,...605 Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown Hemi Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Cooling on the street.... [Re: Dragula] #3067381
08/12/22 03:26 PM
08/12/22 03:26 PM
Joined: Jan 2004
Posts: 3,986
Motor City
6
6PKRTSE Offline
master
6PKRTSE  Offline
master
6

Joined: Jan 2004
Posts: 3,986
Motor City
I had superior radiators custom build me an aluminum radiator with Spal 1800 cfm dual fans and Shroud with -20 inlet and outlets. It keeps my Mega Block Hemi cooler on the street with more than double the horsepower of some of my other cars. Been stuck in dead stop 95 degree traffic multiple times and never went above 176 degrees on my digital Racepak display screen. I am happy with it so far.

IMG_8664.jpgIMG_8666.jpg

1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
Re: Cooling on the street.... [Re: Dragula] #3067429
08/12/22 06:58 PM
08/12/22 06:58 PM
Joined: Jan 2003
Posts: 8,115
Benton, IL.
D
DaveRS23 Offline
master
DaveRS23  Offline
master
D

Joined: Jan 2003
Posts: 8,115
Benton, IL.
On my Hemi Dart, I used the Mercedes fan and Howie's controller. That thing really moved some air. No room, so I had an electric pump. I didn't spend a lot of time driving it, but it cooled okay in 90*+ weather.

[Linked Image]


KOS
Re: Cooling on the street.... [Re: DaveRS23] #3067462
08/12/22 08:31 PM
08/12/22 08:31 PM
Joined: Jun 2016
Posts: 799
Washington
H
hemienvy Offline
super stock
hemienvy  Offline
super stock
H

Joined: Jun 2016
Posts: 799
Washington
Anybody know much about Nascar cooling ?

What is it, 800HP at WOT for a couple hours ? And I thought they didn't like airflow going into the engine bay.

Re: Cooling on the street.... [Re: hemienvy] #3067467
08/12/22 08:56 PM
08/12/22 08:56 PM
Joined: Jan 2011
Posts: 557
st.louis,mo.
69b1dart Offline
mopar
69b1dart  Offline
mopar

Joined: Jan 2011
Posts: 557
st.louis,mo.
i tried running e85 in mine to get it cooler,didnt work

Re: Cooling on the street.... [Re: Dragula] #3067504
08/12/22 10:08 PM
08/12/22 10:08 PM
Joined: Feb 2012
Posts: 4,385
Morristown Tn.
7
71birdJ68 Offline
master
71birdJ68  Offline
master
7

Joined: Feb 2012
Posts: 4,385
Morristown Tn.
It's hard to beat a factory 26 inch radiator with a shroud and clutch fan and a 7 blade fan.

Re: Cooling on the street.... [Re: Dragula] #3067505
08/12/22 10:23 PM
08/12/22 10:23 PM
Joined: Jan 2003
Posts: 1,906
s. e. pa.
C
calrobb2000 Offline
top fuel
calrobb2000  Offline
top fuel
C

Joined: Jan 2003
Posts: 1,906
s. e. pa.

hi

i have a wizard rad in my 340 valiant , it came with the car .

i dont think it is any better than some of the other alu radiator out there .


i got an alu rad off e bay from autocity 1958 for my hemi car and it cools very good , 195 sitting in traffic on a 85deg day .

180 deg stat .

Re: Cooling on the street.... [Re: calrobb2000] #3067534
08/13/22 07:11 AM
08/13/22 07:11 AM
Joined: Jan 2003
Posts: 7,562
Tulsa OK
Bad340fish Offline
master
Bad340fish  Offline
master

Joined: Jan 2003
Posts: 7,562
Tulsa OK
I had struggled to find fans thin enough to fit my setup that also flowed good air. I bit the bullet last year and bought a Delta Pag 18" brushless 4000CFM fan and controller. I ran a dodge intrepid dual fan setup before but it was starting to give me trouble and the aftermarket changed the design and I had to update. The brushless fan is soft start and variable speed and it works really well. I never have had any runaway cooling problems but I have seen over 200* on drag week especially on long highway runs. The delta pag fan did get over 200 last year but it was with 2 hours of 5-6 lane crawling traffic.

I just changed to a dual pass radiator and I was able to tuck it closer to the core support so I think I will be able to have my friend fabricate a shroud for the fan this time.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Cooling on the street.... [Re: justinp61] #3067537
08/13/22 08:01 AM
08/13/22 08:01 AM
Joined: Mar 2005
Posts: 1,562
N/E, Michigan
RATTRAP Offline
pro stock
RATTRAP  Offline
pro stock

Joined: Mar 2005
Posts: 1,562
N/E, Michigan
Originally Posted by justinp61
A mopar viscous fan kit ended my cooling issues. I tried different pumps, radiators and electric fans. The belt driven fan was the last option before pulling the engine. This set up has now been on three engine combinations and still works great.


iagree With a shroud!

Re: Cooling on the street.... [Re: Dragula] #3067544
08/13/22 08:56 AM
08/13/22 08:56 AM
Joined: Aug 2005
Posts: 1,332
Az
69hemibeep Offline
pro stock
69hemibeep  Offline
pro stock

Joined: Aug 2005
Posts: 1,332
Az
Originally Posted by Dragula
Once the Mega block gets up in temp in the big ole Hemi, I cannot get it back down...That is where I started. Then I put in a 55gal/hr water pump, it got a little better...Then I disconnected the built in tans cooler and it dropped about 10*, but still hot at 215* on a 90* day in traffic.

I took the thermostat out and left it out...Got a little better yet. Switched to better dual BeCool12" fans over the Flex-a-Lite and that helped a little..

What is weird is late last year, I killed the Firecore distributor and replaced it with an MSD....Totally different curves, and that helped the most. I am down to keeping it right around 205 on a hot day. Still not the 185* I want, but close.

So I ordered a new shroud and over sized 14" fans from Wizard Cooling, and I just got a Griffin 31x19 Rad with the 1.25 rows of tubes...
You don't have a heat problem at 205 you are in the middle of the operating range. 185 is a minimal warmup temp. At 205-210 is warm enough to vaporize any moister in the crankcase so it can be removed by the PVC thus no sludge.

Last edited by 69hemibeep; 08/13/22 09:00 AM.

1969 Hemi Roadrunner 2nd owner
Re: Cooling on the street.... [Re: 69hemibeep] #3067548
08/13/22 09:26 AM
08/13/22 09:26 AM
Joined: Sep 2005
Posts: 580
Deep DEEP SOUTH
LAD 524 Offline
mopar
LAD 524  Offline
mopar

Joined: Sep 2005
Posts: 580
Deep DEEP SOUTH
[/quote]You don't have a heat problem at 205 you are in the middle of the operating range. 185 is a minimal warmup temp. At 205-210 is warm enough to vaporize any moister in the crankcase so it can be removed by the PVC thus no sludge. [/quote]

Agree ^^^

Re: Cooling on the street.... [Re: LAD 524] #3067567
08/13/22 10:35 AM
08/13/22 10:35 AM
Joined: Aug 2011
Posts: 2,594
Pattison Texas
csk Offline
master
csk  Offline
master

Joined: Aug 2011
Posts: 2,594
Pattison Texas
not a Hemi, but on my street wedge ign timing curve solved all my running hot problems.


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392

Re: Cooling on the street.... [Re: csk] #3067606
08/13/22 12:22 PM
08/13/22 12:22 PM
Joined: Aug 2005
Posts: 681
Southington Ct.
T
turbobitt Offline
mopar
turbobitt  Offline
mopar
T

Joined: Aug 2005
Posts: 681
Southington Ct.
I have a 572 Hemi, 11:1 compression decent solid roller street engine. I have had various types of aftermarket aluminum and copper/brass radiators along with many aftermarket electric and belt driven fans and believe it or not my best cooling package as of now is a 26" Glen ray max cool radiator, stock fan/shroud and thermostatic viscous clutch. Basically stock appearing stuff. I also have a Flowkooler water pump in the typical aluminum housing. All of the belts and pullies are standard sized for a 1970 RB/wedge equipped challenger.
AG

Last edited by turbobitt; 08/13/22 12:23 PM.

1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.
Re: Cooling on the street.... [Re: RATTRAP] #3067611
08/13/22 12:35 PM
08/13/22 12:35 PM
Joined: Oct 2003
Posts: 11,327
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,327
W. Kentucky
Originally Posted by RATTRAP
Originally Posted by justinp61
A mopar viscous fan kit ended my cooling issues. I tried different pumps, radiators and electric fans. The belt driven fan was the last option before pulling the engine. This set up has now been on three engine combinations and still works great.


iagree With a shroud!


Yes, I should've added that. I forget it's not a given to run a shroud.

Re: Cooling on the street.... [Re: Bad340fish] #3067694
08/13/22 04:53 PM
08/13/22 04:53 PM
Joined: Sep 2003
Posts: 16,429
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 16,429
north of coder
Originally Posted by Bad340fish
I had struggled to find fans thin enough to fit my setup that also flowed good air. I bit the bullet last year and bought a Delta Pag 18" brushless 4000CFM fan and controller. I ran a dodge intrepid dual fan setup before but it was starting to give me trouble and the aftermarket changed the design and I had to update. The brushless fan is soft start and variable speed and it works really well. I never have had any runaway cooling problems but I have seen over 200* on drag week especially on long highway runs. The delta pag fan did get over 200 last year but it was with 2 hours of 5-6 lane crawling traffic.

I just changed to a dual pass radiator and I was able to tuck it closer to the core support so I think I will be able to have my friend fabricate a shroud for the fan this time.



what controller are you using ? did it come with the fan setup ? is it a soft start ?
beer

Re: Cooling on the street.... [Re: moparx] #3067932
08/14/22 05:41 PM
08/14/22 05:41 PM
Joined: Jan 2003
Posts: 7,562
Tulsa OK
Bad340fish Offline
master
Bad340fish  Offline
master

Joined: Jan 2003
Posts: 7,562
Tulsa OK
Delta Pag offers a controller that works great. I just recently wired it to where my EFI will control it via PWM but I haven't run it yet to see how well that will work.

I run the car really cool at the track so I like to be able to switch between "street cool" and "track cool" easier than doing it via the controller. 160* in the burnout box vs 140* in the burnout box is worth a tenth on my car. Having an electric water pump and fan make 140* entering the burnout box a pretty easy thing to achieve.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
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