Re: Shopping for a new radiator
[Re: mopar dave]
#2244653
01/31/17 01:34 PM
01/31/17 01:34 PM
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Joined: Jan 2003
Posts: 19,544 Las Vegas
Al_Alguire
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I Live Here
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Posts: 19,544
Las Vegas
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Pretty typical from a crossflow radiator. Likely not filled completely filled to begin with. We fill them under a vacuum or run them pump a few times to make sure they are filled. Also check them after first heat cycle. Some of the OE ones can be a real bear to get full...
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Shopping for a new radiator
[Re: mopar dave]
#2244683
01/31/17 02:19 PM
01/31/17 02:19 PM
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Joined: Aug 2003
Posts: 5,025 new jersey usa
11secdart
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master
Joined: Aug 2003
Posts: 5,025
new jersey usa
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I have had a smsll Nissan radiator in my Dart for many years however for some reason my new 408 does't like it and it runs hot. I bought a Champion from Summit it fit nice and the car runs much cooler it was a good price around $200
Last edited by 11secdart; 01/31/17 02:21 PM.
68 Dart 410 / 904 92 D150 original owner 21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4 23 Audi Q5 16 Honda HRV
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Re: Shopping for a new radiator
[Re: mopar dave]
#2244684
01/31/17 02:20 PM
01/31/17 02:20 PM
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Joined: Mar 2006
Posts: 2,686 Mt. Eden Ky.
Hemi Allstate
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master
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Mt. Eden Ky.
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Just another option for you to consider.... I bought one for my road runner and the fit was good. Mine was not the aluminum, and I had to order it. http://www.usradiator.com/radiators/plymouth.htmlMark
1996 Ram 1500 Sport 1968 road runner 1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: Shopping for a new radiator
[Re: mopar dave]
#2244704
01/31/17 02:54 PM
01/31/17 02:54 PM
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Joined: Jan 2003
Posts: 13,496 Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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Marion, South Carolina [><]
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I have a big Griffin radiator in the cuda. Bolted right in and works great, but it was expensive. It's a down flow w/ two rows of 1.25" tubes. The Champion radiators that a guy sells in the classifieds here on the board I hear work good, and they're cheap too.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 4 speed, Dana 60 '71 Demon 340, no drivetrain, on blocks behind the barn '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Shopping for a new radiator
[Re: mopar dave]
#2245400
02/01/17 04:52 PM
02/01/17 04:52 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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Washington
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I have to make a correction about the double pass radiators. There are no issues in plugging like I was told earlier. Just spoke with two radiator companies and they both recommend double or triple pass for my app. Tripple pass requires bigger pump like a 55. No off the shelf available. must be custom 1.25" double row double pass. I also have an option of a 1.25" tube double row down flow. I plan on using a mechanical pump and good flex fan with a shroud. I have a fan that moves a ton of air. Before you buy anything,I would google Stewart water pumps and read the stuff on their site. Then call them and ask them what they think of multiple pass radiators. They are not fond of them. Cooling is about total flow and cooling area. If you have to make the coolant travel a longer path to cool the radiator is too small. The EPC is a 2 core with 1 inch cores. With the right water pump and the correct water pump speed that will cool 750 HP easy.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Shopping for a new radiator
[Re: mopar dave]
#2245411
02/01/17 05:22 PM
02/01/17 05:22 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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Joined: Sep 2014
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Washington
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That web page is stewartcomponents.com
A double pass radiator requires 16 times the pressure as a single pass to flow the same amount of coolant IIRC. A triple pass needs 64 TIMES the pressure to get the same flow as a single pass radiator. You need to look it up and read it for yourself.
It made me think differently about cooling than I had before.
Last edited by madscientist; 02/01/17 05:23 PM.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Shopping for a new radiator
[Re: madscientist]
#2245428
02/01/17 06:00 PM
02/01/17 06:00 PM
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Joined: Jul 2010
Posts: 1,845 Tampa
DusterDave
top fuel
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top fuel
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Tampa
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My advice is, don't buy into the sales hype of 3 and 4 row radiators. Two rows will cool better. If you need more cooling, get one with 1.25" tubes. And install a sealed fan shroud that covers the entire fin pack!
Gone to the dark side with an LS3 powered '57 Chevy 210
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Re: Shopping for a new radiator
[Re: mopar dave]
#2245471
02/01/17 07:39 PM
02/01/17 07:39 PM
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Joined: Aug 2011
Posts: 2,905 Pattison Texas
CSK
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Pattison Texas
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I have an ECP 26" core in my 68 Charger 512ci with AC & I am in South east Texas, in 107 outside temp with AC on car runs 185ish all day long, I had a 4core Champion that did not work so well in the same car.
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 Stock 11.79 @ 114.5
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Re: Shopping for a new radiator
[Re: madscientist]
#2245566
02/01/17 10:23 PM
02/01/17 10:23 PM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
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Canton, Ohio
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That web page is stewartcomponents.com
A double pass radiator requires 16 times the pressure as a single pass to flow the same amount of coolant IIRC. A triple pass needs 64 TIMES the pressure to get the same flow as a single pass radiator. You need to look it up and read it for yourself.
Checked the site out for myself. They definitely need a new fluid dynamics engineer. To toss out those Two numbers randomly 16 and 64 TIMES is insane. To many variables. If you were trying to pass the Whole Engines water system through a Heater Core, single, dual, triple, pass then it May be closer to the truth. But the newer rads have a lot more flow capacity. But with that said, Yes, the dual; and triple pass rads will have more flow restriction, but Not Nearly the amount, the Stewarts web site suggests. But, I will back peddle a little, the standard newer rads if big enough and with the right shrouds and fans are plenty enough to cool a lot of our rides. Lack of shrouds and fan placement is probably the biggest issues of poor cooling. Dave, my Howe crossflow rad is a 19 x 31 for my A body. Had to trim some excess sheet metal from the driver side frame rail, and make a pocket in the passenger side front portion of the frame rail for it to slide in. So if your up for some miner fabrication you can go bigger on the rad.
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Re: Shopping for a new radiator
[Re: mopar dave]
#2245569
02/01/17 10:26 PM
02/01/17 10:26 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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Washington
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Did you put that 28" with in an A body? Curious to how well it fit. How big are the tanks? I bought the 26 inch ECP for an A body. If you go by the print on their site it should all fit. You know, bolt it. But, where they put the core relative to the brackets makes it so you have to modify the brackets and I had to drill some holes in the core support, which I didn't want to do. But for the money I decided that I could use the 2 top holes and put 2 small holes in the core support. For the money you just about can't beat the ECP. I don't trust much of what frank at ECP says about fitment (which is why he will tell you measure everything and compare it to his print) but other than that, it's a nice piece. All that said, if you don't mind doing some minimal mods to the brackets and core support its probably the best for the money. Also, I'd say use the biggest flowing mechanical water pump you can buy and you should be pooping in the tall cotton. One last thing...I bitched like crazy because the overflow hose points to the drivers side and not the passenger side. It's is on his drawing like that, but it was the ONE thing I didn't look at close enough. I've personally never seen an OE Chrysler radiator with the over flow pointing to the drivers side. I just put a loop in the hose to the over flow tank.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Shopping for a new radiator
[Re: Sport440]
#2245572
02/01/17 10:28 PM
02/01/17 10:28 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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That web page is stewartcomponents.com
A double pass radiator requires 16 times the pressure as a single pass to flow the same amount of coolant IIRC. A triple pass needs 64 TIMES the pressure to get the same flow as a single pass radiator. You need to look it up and read it for yourself.
Checked the site out for myself. They definitely need a new fluid dynamics engineer. To toss out those Two numbers randomly 16 and 64 TIMES is insane. To many variables. If you were trying to pass the Whole Engines water system through a Heater Core, single, dual, triple, pass then it May be closer to the truth. But the newer rads have a lot more flow capacity. But with that said, Yes, the dual; and triple pass rads will have more flow restriction, but Not Nearly the amount, the Stewarts web site suggests. But, I will back peddle a little, the standard newer rads if big enough and with the right shrouds and fans are plenty enough to cool a lot of our rides. Lack of shrouds and fan placement is probably the biggest issues of poor cooling. Dave, my Howe crossflow rad is a 19 x 31 for my A body. Had to trim some excess sheet metal from the driver side frame rail, and make a pocket in the passenger side front portion of the frame rail for it to slide in. So if your up for some miner fabrication you can go bigger on the rad. Is that 19 X 31 a 26 inch core? I don't run a shroud. The fan is close enough to the radiator to not need one.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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