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NVEGAR8D wrote:Hi,
what size thermostat, rad size are you using?
nick75vega
megavega wrote:here is a couple things that will help, first you can take a 1/8" drill bit and drill about 3 or 4 little holes in the outer perimeter of the thermostat, this will allow some coolant to move at all times instead of a big rush.
Also on your fan set up,(this is where your problem is in my opinion) you need to cover the entire radiator cooling surface area, not just 13 inch of 21 inch space, otherwise your not getting good cooling over those fins. One single fan can work if its in a shroud and that makes it draw air over the entire core of the radiator. The other option is to run 2 electric fans mounted diagnally so that each fan covers half of the radiator, and somewhere along the way every cooling tube is is passed thru/by the fan.
ADD: I just went and saw you have a single fan in the middle and your using it as a "pusher", youd be way better off running 2 10 inch fans diagnolly inside the radiator as suckers, it will cool much better. "pusher" fans are not nearly as good as sucker fans, and the they hamper airflow going down the road. Also, most electric fans are NOT able to be pusher or sucker fans as advertised by way of the fan blade angle, if you hold your hand in front of one and just simply reverse the polarity and the motor (spins backward) youll see the air will only come out on the very edges and nothing thru the middle, its the same exact set up with a airplane prop, if you just put it on backwards, the plane couldnt get off the ground. I would bet money on this is your cooling problem, let me know what the fan is. I have had lots of v8 vegas and the cooling problem is actually very simple if you just step back and take into account whats really happening.
Rickracer wrote:There are a couple of fans that seem to work GREAT on V8 S10s, one is the ( 3.8 ) Taurus 2 speed fan, (but it's a little thick and doesn't fit all that well in some applications), the 2nd is the 98 up Intrepid dual fan setup. I'm running that one on my truck right now with a 430 hp Vortec head .080 over 350 (yes, .080 over), and it doesn't matter what the weather, what the load, or whether the A/C is on or not, with a high flow Stant 180° thermostat, my gauge is rock steady at 180°. If you have A/C, the e-fans keep the air blowing cold even sitting in traffic, which is one area where the mechanical fans just cannot keep up.
Here's a pic of the Intrepid fan setup:
Here's an idea for a shroud for aftermarket fans: http://v8s10.org/forum/viewtopic.php?f=46&t=31075 .
We used some small holes in the fan shroud to attach it, there were like 12 of them, the perfect size for self tapping screws, assuring this unit would be sturdy and secure.
Then we bent some aluminum strips, (about .040" thick), to attach the shroud to the radiator core's upper and lower frames, and attached them with self tapping screws as well.
Rickracer wrote:I would recommend doing what you gotta do to get a puller fan(s) on there. This is from a post I did a few days ago:Rickracer wrote:There are a couple of fans that seem to work GREAT on V8 S10s, one is the ( 3.8 ) Taurus 2 speed fan, (but it's a little thick and doesn't fit all that well in some applications), the 2nd is the 98 up Intrepid dual fan setup. I'm running that one on my truck right now with a 430 hp Vortec head .080 over 350 (yes, .080 over), and it doesn't matter what the weather, what the load, or whether the A/C is on or not, with a high flow Stant 180° thermostat, my gauge is rock steady at 180°. If you have A/C, the e-fans keep the air blowing cold even sitting in traffic, which is one area where the mechanical fans just cannot keep up.
Here's a pic of the Intrepid fan setup:
Here's an idea for a shroud for aftermarket fans: http://v8s10.org/forum/viewtopic.php?f=46&t=31075 .
We used some small holes in the fan shroud to attach it, there were like 12 of them, the perfect size for self tapping screws, assuring this unit would be sturdy and secure.
Then we bent some aluminum strips, (about .040" thick), to attach the shroud to the radiator core's upper and lower frames, and attached them with self tapping screws as well.
You could cut some square holes in the corners of the shroud and hang a rubber flap over them to allow more airflow through the shroud at highway speeds, ( but the flaps will close when sitting still), we planned that for Eddie's shroud, but it turned out they were not necessary at all. Another thing you will almost definitely want to do is add ducting and/or sealing to make sure that ALL air that enters the grille opening goes through the radiator and not around it, under it or over it.
BTW, my last Vega had a stout 327 in it for about 15 years, and an 11:1 roller cam 427 in it the last 4 or 5 years before I sold it, so I have dealt with ALL of this before,
megavega wrote:Your welcome badbowtie, usually you can fit 2 diagnally inside as suckers, one at the upper left and one at bottom right and still clear the waterpump pulley. Thats what I was refering to in first post.
waybad wrote:Rickracer wrote:I would recommend doing what you gotta do to get a puller fan(s) on there.....
are the intrepid fans pushers??
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