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Old 07-09-2019, 07:55 AM   #106
overkill69
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Default Re: Basics of Radiator Cooling

Aluminum radiator core design...any thoughts on the size of the tubes in the core. I'm ready to order an upgrade radiator today and am leaning towards Be Cool due to good reviews and impressive tech support. They claim 2-1 inch tubes is the best. Griffin, Dewitts etc vouch for 2-1.25 tubes and a little thicker overall core. The multiple .5 inch tubes don't make sense to me and I suspect they are Chinese.
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Old 07-09-2019, 09:01 AM   #107
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Default Re: Basics of Radiator Cooling

If you have room for sufficient width and height, then I think two 1" tubes is best. If you're height and/or width limited, then you have only one other dimension to grow. Another thing to think about is single pass or multi-pass.
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Old 07-09-2019, 10:38 AM   #108
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Default Re: Basics of Radiator Cooling

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If you have room for sufficient width and height, then I think two 1" tubes is best. If you're height and/or width limited, then you have only one other dimension to grow. Another thing to think about is single pass or multi-pass.
I cut and hacked room for a 31x19. I had a 26x19 2 row x 1.25 tube before.
From what I've gathered multi-pass shines in mechanical water pump high rpm programs like dirt track and off road trucks.
I have an electric water pump pro street setup that gets hot at cruise mostly.
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Old 07-09-2019, 10:59 AM   #109
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Default Re: Basics of Radiator Cooling

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Originally Posted by overkill69 View Post
I cut and hacked room for a 31x19. I had a 26x19 2 row x 1.25 tube before.
From what I've gathered multi-pass shines in mechanical water pump high rpm programs like dirt track and off road trucks.
I have an electric water pump pro street setup that gets hot at cruise mostly.
What does your spark timing look like at cruise? Delayed spark advance at idle and part throttle can cause an overheating issue.
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Old 07-09-2019, 11:08 AM   #110
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Default Re: Basics of Radiator Cooling

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Originally Posted by Polyalphaolefin View Post
What does your spark timing look like at cruise? Delayed spark advance at idle and part throttle can cause an overheating issue.
I run the timing locked at 36 ish.
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Old 07-11-2019, 10:11 PM   #111
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Default Re: Basics of Radiator Cooling

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Originally Posted by overkill69 View Post
I cut and hacked room for a 31x19. I had a 26x19 2 row x 1.25 tube before.
From what I've gathered multi-pass shines in mechanical water pump high rpm programs like dirt track and off road trucks.
I have an electric water pump pro street setup that gets hot at cruise mostly.
What does the electrical side consist of --

12 or 16 volt battery?
what amperage does the alternator output at engine idle speeds?
is the elec fan pulling air through the rad?
what kind of fan are you running?
is it in a shroud?
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