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Rear mounted radiator -
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DRR Pro
Picture of chasracer
posted
Any ideas on line size - I would assume AN stuff.
 
Posts: 1135 | Location: The problem is not the problem. The problem is your attitude about the problem. Savvy?” ~~ Captain Jack Sparrow ~~ | Registered: August 21, 2000Reply With QuoteReport This Post
DRR Elite
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-12
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
Picture of chasracer
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no one?
 
Posts: 1135 | Location: The problem is not the problem. The problem is your attitude about the problem. Savvy?” ~~ Captain Jack Sparrow ~~ | Registered: August 21, 2000Reply With QuoteReport This Post
DRR Sportsman
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-12 here also.


Denis LeBlanc

 
Posts: 466 | Location: Manchester, NH | Registered: February 03, 2006Reply With QuoteReport This Post
DRR Sportsman
Picture of TD3550
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#12.Don't forget to run a taller fill neck. On some i have installed a Pet*** in the front or rear of the intake . Makes it easy to bleed the air out on the fill. Especially with lay down radiators.
 
Posts: 1409 | Location: Under a Truck | Registered: August 23, 2013Reply With QuoteReport This Post
DRR S/Pro
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#12 is common but I have seen smaller work also. A #10 and a good water pump will flow a good amount of water.
 
Posts: 2149 | Location: Tewksbury, MA,USA | Registered: November 03, 2000Reply With QuoteReport This Post
DRR Sportsman
Picture of SC4400
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Mine is #10

RIP


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Our survival is not guaranteed.
 
Posts: 793 | Location: Lake Charles La | Registered: January 29, 2002Reply With QuoteReport This Post



DRR Top Comp
Picture of Curly1
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I am doing my new car in -12 PTFE hose. Rear mounted radiator on Alcohol. I have used -10 before and it worked just fine.


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"Dunning-Kruger Effect"
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Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

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Posts: 3999 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR S/Pro
Picture of Big Steve
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10 on mine, plenty big enough
 
Posts: 2416 | Location: Moving back to the door side | Registered: April 30, 2010Reply With QuoteReport This Post
DRR Trophy
Picture of Jerry Kathe
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quote:
Originally posted by Big Steve:
10 on mine, plenty big enough


True.

I have used #8 and a small Davis radiator in front of the foot box (spitzer). I have used #8 with an larger AFCO above the transmission (race tech) and currently a typical AFCO on the blow shield with a #16 supply and #12 return (american) all using the exact same engine.....no difference.


Jerry Kathe
 
Posts: 138 | Location: SW Ohio | Registered: November 11, 2015Reply With QuoteReport This Post
DRR Pro
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I have found it is more about "time in the radiator" rather than how fast it can pump through it. We had a door car that actually ran cooler with a much smaller radiator and #8 hose rather than stock hoses into a bigger radiator. Warmed up easier and was easier to maintain the same temp between rounds. Block was half-filled so actually there was less water in the system to cool after the runs. Just my opinion.


www.trailertoad.com designed by racers for racers.

 
Posts: 1218 | Location: Janesville, IA | Registered: December 21, 2004Reply With QuoteReport This Post
DRR Sportsman
Picture of Mike Allred
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I used marine exhaust hose 1.5” and 1.75” to the full size radiator in the bed of my pickup. The capacity is huge so A 160 thermostat is used, and I can run back-to-back rounds all day long in 100 degree heat. I’m running gas by the way. Hope this wasn’t a dragster only topic…


Mike Allred
 
Posts: 276 | Location: Fayetteville, NC | Registered: March 10, 2004Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
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Well, if I was running gas I would go with a larger radiator than I did for alcohol and may consider larger hoses to.


https://postimg.cc/gallery/np3zpruo/
"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 3999 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR Sportsman
Picture of sc4087
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I run #8 on all of our dragsters. Like Toad stated, I read a tech article years and years ago about the water needing time to stay in the radiator and dissipate heat rather than just run thru it fast. Moroso used to make water restrictors to put in place of a thermostat to do the same thing. Come look at my temp gauge in the lanes late rounds anytime you'd like.


Mike Greene




 
Posts: 509 | Location: Burleson, TX | Registered: March 23, 2007Reply With QuoteReport This Post



DRR S/Pro
Picture of The Bozman
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i run #10


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Posts: 2497 | Location: Gilmer, Texas | Registered: June 25, 2002Reply With QuoteReport This Post
DRR Trophy
Picture of 1leg
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Is this on a dragster or Door car? What engine are you running?


Meziere Tech.
Make sure your water pump is on whenever you check your coolant level.
 
Posts: 238 | Location: Escondido | Registered: July 01, 2011Reply With QuoteReport This Post
DRR / Crew
Picture of DragRaceResults
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We use -10 on all our cars with the radiator mounted over the 4 link. Cars are on gas, never an issue. Easier to plumb and fittings are cheaper.

SL...

 
Posts: 2104 | Location: Gallatin, TN - U.S.A. | Registered: October 12, 2009Reply With QuoteReport This Post
DRR Sportsman
Picture of TonyB6255
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quote:
Originally posted by 1leg:
Is this on a dragster or Door car? What engine are you running?


I've been waiting for you to post on this. I've always ran 12 line to my rear mounted radiator with the Meziere 100HD pump in my 1200-1300 hp RED. Although like a few have posted, there was an article a few years ago about running smaller line to keep the coolant in the radiator longer. I am considering a switch to -10 coolant lines.

What are your thoughts? I think I remember you disputing this a while back.
 
Posts: 633 | Location: Rochester, WA | Registered: November 22, 2006Reply With QuoteReport This Post
DRR Elite
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Tony, I don’t believe it. We can stage at any temp we want late in the rounds with -12 hoses. Won a grueling 8 round race in brutal heat and humidity several months ago snd cooling was never an issue.

 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR S/Pro
Picture of Lenny5160
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My current car is all -12 but my previous car, on the advice of Meziere, was -16 into the pump and -12 out of the intake to create a pressurized system.

Those -16 fittings really sucked to buy!


Tony Leonard
 
Posts: 3153 | Location: Inver Grove Heights, MN | Registered: March 18, 2004Reply With QuoteReport This Post
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