06-25-2009, 12:20 AM
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#1 |
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Registered User
Age: 19
Join Date: Jun 2009
Posts: 14
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4 core rad to thick?
so i swapped my 1st gen to a 350 5 speed. i threw a 4 core copper rad into it though, almost perfect fit.
i have a plastic flex fan on the water pump, and a electric fan on it, but i am still overheating easily, going to mcdonalds drive through overheats me 160f thermostat, holley 750 dp proform center 69 72 jets, 292 .488 cam any ideas guys? i changed caps, i have a 15 psi cap on it. i dont have a/c, and removed the rad for it. im about to put a aluminum 2 core 4.3l radiator in it, i think im not getting enough airflow for the 4 core |
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06-25-2009, 05:44 PM
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#2 |
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takes 2 balls in our game
Age: 37
Join Date: Nov 2005
Posts: 4,416
Location: florida User is: OffLine |
Re: 4 core rad to thick?
You can have the biggest radiator in the world in it, if you dont have enough airflow going THROUGH it, not around it, you will over heat.
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06-25-2009, 05:51 PM
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#3 |
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Registered User
Age: 19
Join Date: Jun 2009
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Re: 4 core rad to thick?
thats what i was thinking after i drove it, i need to switch it, or i was
i was offered today, even with the bad transmission, no wheels $3000 |
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06-25-2009, 08:28 PM
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#4 |
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Banned
Age: 22
Join Date: Feb 2006
Posts: 2,361
Location: warner robins, GA User is: OffLine |
Re: 4 core rad to thick?
probly overheating becuase you have a pusher and a puller fan... i treid that on my s10, had a pusher fan up front, and the stock clutch fan with shroud, it would overheat quicker than with just the stock clutch fan.
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06-25-2009, 09:02 PM
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#5 |
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Registered User
Age: 19
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Posts: 14
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Re: 4 core rad to thick?
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06-25-2009, 10:24 PM
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#6 |
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Registered User
Age: 35
Join Date: Jan 2006
Posts: 458
Location: Grande Prairie AB User is: Online |
Re: 4 core rad to thick?
Do you have a fan shroud? Makes a big difference, helps direct the air flow. Also I've heard adding water wetter to the coolant helps to....haven't used it first hand though.
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06-25-2009, 10:38 PM
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#7 |
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Does NOT Work For CIA
Age: 37
Join Date: Aug 2006
Posts: 369
Location: SE Wisconsin User is: OffLine |
Re: 4 core rad to thick?
Pullers work way better than pushers the air has to come through when the fans are pulling. On mine I bet 40% of air flow goes around radiator at least that what it feels like to me, I will be switching to pullers soon once i cut core support so i can move radiator forward a tick or two.
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06-25-2009, 10:38 PM
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#8 |
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Local Tech
Age: 26
Join Date: Jan 2008
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Re: 4 core rad to thick?
im with s10-den.... so many people dont understand that its the amount of air capable of passing thru the rad that counts.... not its coolant capacity, etc etc.... thats why so many vehicles have thin radiators. also, depending on how many fins per inch it has, its easier to get clogged, and thusforth, air cannot pass thru
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06-25-2009, 10:52 PM
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#9 |
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Registered User
Age: 19
Join Date: Jun 2009
Posts: 14
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Re: 4 core rad to thick?
probably 6-8 fines per inch |
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06-26-2009, 08:19 AM
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#10 |
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takes 2 balls in our game
Age: 37
Join Date: Nov 2005
Posts: 4,416
Location: florida User is: OffLine |
Re: 4 core rad to thick?
6-8 fins per inch !?
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06-26-2009, 10:17 AM
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#11 |
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the youngest has been
Age: 22
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Re: 4 core rad to thick?
if it has 6-8 fins per inch you should be able to stick a pencil through the fins and not bend them
stock 4.3 radiator is 12-14 FPI aftermarket HD 4.3 radiaotr is 14-16 FPI corvette rad is 14-16 FPI just going off memory on the above counts. if they are incorrect please correct me |
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06-26-2009, 03:12 PM
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#12 |
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takes 2 balls in our game
Age: 37
Join Date: Nov 2005
Posts: 4,416
Location: florida User is: OffLine |
Re: 4 core rad to thick?
I know what it means,I was saying thats one reason right there.
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06-26-2009, 04:16 PM
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#13 |
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the youngest has been
Age: 22
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Re: 4 core rad to thick?
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06-26-2009, 04:17 PM
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#14 |
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the youngest has been
Age: 22
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Re: 4 core rad to thick?
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06-26-2009, 08:44 PM
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#15 |
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takes 2 balls in our game
Age: 37
Join Date: Nov 2005
Posts: 4,416
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Re: 4 core rad to thick?
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06-26-2009, 09:58 PM
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#16 |
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Registered User
Age: 19
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Posts: 14
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Re: 4 core rad to thick?
  like i remember off the top of my head the fpi of the radiator |
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06-27-2009, 09:26 PM
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#17 |
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the youngest has been
Age: 22
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Re: 4 core rad to thick?
you dont have to be the head cashier at walmart to be able to get a carbed 350/m5 combo to work. Last edited by tippmann243 : 06-27-2009 at 09:27 PM. |
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06-27-2009, 09:54 PM
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#18 |
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Registered User
Age: 19
Join Date: Jun 2009
Posts: 14
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Re: 4 core rad to thick?
iits good enough i asssembled the motor and put it in, as i had said before i was basing off of memory as to how many fins were there. all i remembered was purchased from a stock car racer, 4 core copper, fits truck |
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06-28-2009, 12:05 AM
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#19 |
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the youngest has been
Age: 22
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Re: 4 core rad to thick?
what is it made out of? because a copper/brass 4 core radiator is usually less efecient then a single core aluminum radiator. |
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06-28-2009, 12:12 AM
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#20 |
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Stock Height
Age: 21
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Re: 4 core rad to thick?
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06-28-2009, 12:16 AM
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#21 |
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Registered User
Age: 19
Join Date: Jun 2009
Posts: 14
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Re: 4 core rad to thick?
we shall see how this 2 core alu radiator works in the morning after i go get a different thermostat housing
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06-30-2009, 06:56 PM
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#22 |
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Registered User
Age: 33
Join Date: Apr 2009
Posts: 133
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Re: 4 core rad to thick?
It will be about the same. Sounds like the only problem is, you need a fan shroud.
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06-30-2009, 10:42 PM
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#23 |
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Registered Neanderthal
Join Date: Nov 2007
Posts: 2,335
Location: Meriden/CT/USA User is: OffLine |
Re: 4 core rad to thick?
The flex fan may not be able to handle enough air even in the shroud or is too deep into/ too far out of the shroud. |
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07-01-2009, 12:00 PM
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#24 |
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Registered User
Age: 33
Join Date: Apr 2009
Posts: 133
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Re: 4 core rad to thick?
The fan blades should stick NO MORE than 1/2 way into the shroud. If too much of the blade is inside the shroud it causes too much air turbulance and won't work properly.
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07-02-2009, 12:14 PM
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#25 |
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Registered User
Age: 19
Join Date: Jun 2009
Posts: 14
Location: User is: OffLine |
Re: 4 core rad to thick?
yes i had a 2.8l fan shroud
i now have a 4.3 radiator and shroud along with i think its a 16" 6 blade metal fan on it, now i have yet to go over 170. if i let it sit on a 90 degree day for about 20 minutes idling it hits 190 so temp problem has been solved  |
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