cooling issue

The one I'm sellin?

I'll get you the size tonight. 12" tall if I remeber correctly.
Ron said it's a drag radiator. Perfect for between rd cooling. It's the exact same rad that's on the black 79 camaro iv posted pics of. BBC, gear drive procharger, blah blah. He goes mid-high 7's with out a problem.
 
The stat/restrictor theory is bunk. Sure the water in the radiator has more time to cool but you're forgetting that the water in the engine also has more time to heat. The best cooling you will ever get is going to be from the higher flowrate as its more efficient to have the maximum delta T across the radiator (water temp - air temp). The cooling curve degrades logarithmically so as the delta T reduces, the amount of cooling is degrading more and more.
 
LTLHOMER said:
The stat/restrictor theory is bunk. Sure the water in the radiator has more time to cool but you're forgetting that the water in the engine also has more time to heat. The best cooling you will ever get is going to be from the higher flowrate as its more efficient to have the maximum delta T across the radiator (water temp - air temp). The cooling curve degrades logarithmically so as the delta T reduces, the amount of cooling is degrading more and more.
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isn't there also some benifit from slowing the water in the block for heat transfer. Think of it this way wave your hand across a flame very fast you get no heat transfer...slow it down you get more heat transfer. Isn't there a plane you cross when moving coolant too fast doesn't net you enough transfer? So if it passes through the radiator at too high a rate how is the Delta supposed to be affective?
 
Billydroveit said:
isn't there also some benifit from slowing the water in the block for heat transfer. Think of it this way wave your hand across a flame very fast you get no heat transfer...slow it down you get more heat transfer. Isn't there a plane you cross when moving coolant too fast doesn't net you enough transfer? So if it passes through the radiator at too high a rate how is the Delta supposed to be affective?
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You will never get less heat transfer with higher flow. Now you can reach a limit to where additional flow does not give you any additional benefit but it will never get worse. Higher flowrates also lead to turbulent flow while lower flowrates can lead to laminar flow and turbulent flow drives better heat exchange. The hand over a flame doesn't apply because you need to take into account that your heat source is always applying a heat load to your working fluid. In the hand example that's just a transient load.
 
Anthony said:
pulling it off? ron davis says its not big enough for extended street driving.
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Before making such a determination you might want to measure the in and out tempatures. the general rule of thumb I use is a minimum of a 20 degree drop across the radiator. If it can't manage that you will typically have run away tempature issues. If you get a good tempature drop then your isue is somewhere else.Insufficient capacity of the cooling system might be the more key culprit if the radiator can shed enough heat. the only 2 ways I know of to help this scenario are bigger radiator, oil cooler,circulating holding resivor and or finding away to drop mroe tempature across the radiator.

Mind you these are rules of thumb. Radiator does seem a bit smallish but we have similarly sized raidator in cars and they work. You need a huge cooling fan though. That depends on your pacakging. But you might also be making alot of heat to with a poor fuel tuneup which certainly will not help.
 
biggest thing that a stat helps with is getting increased pressure in the block, to help prevent steam layers on the combustion chamber cooling passages, remember, even if it has a 16psi cap, and restriction to flow will increase pressure before the restriction
 
thanks to all that helped or offered advice. drove around for a few hours in traffic yesterday. never went over 170.

took the front of the car off, changed the radiator to a bigger becool unit that John/Rob/Rob/John Racing had in stock. and a dual Spal fan that jason at Livernois had in stock.

HUGE thanks to HopperTech for getting me in and out in one day! including cutting off every fitting on the brand new radiator, even the neck! its hard to take a brand new part and cut the shit outta it.

thanks to SVTSINR aka:John/Rob/Rob/John Racing, for offering up the radiator last minute.

$300 for a Spal fan, no mounting stuff, no wiring harness, not even a damn sticker!
box+staples+fans= $300
 
was out in the fort street parking lot last night for a few hours. lots of sweeeeet saturns and mini vans out
 
it was just stupid. makes me NOT want to go today. depends on where my group of guys are going and if there is a back way to the parking lot.
 
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