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Half size radiator enough?

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Old Oct 23, 2013 | 11:57 PM
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Default Half size radiator enough?

I did a search and didnt really see what I was looking for....

So in my quest to get the best turbo mounting location in the C5 engine bay I was wondering if running a really nice "half size" radiator with a nice SPAL fan would suffice? I am saying the radiator will be the same height but about 35-45% shorter from right to left. Its not a daily driver but is a regular street car with A/C that is driven several times a week. If I could do this it would give me about 6-8 inches more room to mount the turbo.

Anybody try this?
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Old Oct 24, 2013 | 12:10 AM
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Doubt that would work. Many of us are running stock sized radiators and slightly larger ones. Even with this capacity we have issues during warm/hot weather.
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Old Oct 24, 2013 | 12:42 AM
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Dewitt's radiator FTW!!

It's all about core size and cooling area.
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Old Oct 24, 2013 | 03:44 AM
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I remember seeing a build doing exactly what you are suggesting. But I don't recall the end result or if it was even finished. When I was planning my build I seriously considered laying the stock radiator totally horizontal. This has been done several times and it seems to give a lot of room.
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Old Oct 24, 2013 | 07:39 AM
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Crazychris or maybe corvettechris with the 417 motorspirts front mount did a setup like this. You might want to try searching for it. I believe he had no reported cooling issues but he ran a big/deep 3 core iirc.
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Old Oct 24, 2013 | 08:46 AM
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When i had the Dewitt cut down rad,but its lot thicker than stock rad, and holds more than 1 gallon coolant. so if you goin with like Dewitt possibly it will be more than enough and still hold more than stock rad. our sock rad is so thin.

I assuming you ordering this as Custom order to your specs?
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Old Oct 24, 2013 | 10:30 AM
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Originally Posted by Chrisrokc
Doubt that would work. Many of us are running stock sized radiators and slightly larger ones. Even with this capacity we have issues during warm/hot weather.
What you are asking here will work for a track. As long as you don't hot lap it for more than 4 or 5 times. But on a hot day no way with it on the street and using the A/C. NO WAY.
With my aftermarket radiator one on the car just cut down to be able to use the 4 inch tube for the S/C on temp went up about 15 deg on the car with the aftermarket fans coming on as soon as the car starts also. I am talking here from a full size radiator being on the car. Robert
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Old Oct 24, 2013 | 07:25 PM
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Thanks for all the info guys! We have a local fabrication shop that will make me a custom Radiator if I decide to do it. It would be less than $200(I know the owner) to make it so I might give it a shot and report back but we will see. I feel like a super thick radiator with a very good fan would be better than the stock units in our cars.

I'll just run METH instead of coolant lol
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Old Oct 24, 2013 | 07:34 PM
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Look Here!

http://forums.corvetteforum.com/c5-f...done-pics.html

I am going ot lay my radiator down really low may even lay it completely parallel to the ground and stand my intercooler up against the front rail. I'm putting a T6 Borg Warner S480 on mine so I will need all the room I can get. I am however deleting the a/c which is most of the time the cause of heat issues to begin with (when the a/c is turned on).

Last edited by Shoaf85; Oct 24, 2013 at 07:40 PM.
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Old Oct 24, 2013 | 07:38 PM
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Shoaf beat me to the pics
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Old Oct 24, 2013 | 08:35 PM
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Originally Posted by Shoaf85
Look Here!

http://forums.corvetteforum.com/c5-f...done-pics.html

I am going ot lay my radiator down really low may even lay it completely parallel to the ground and stand my intercooler up against the front rail. I'm putting a T6 Borg Warner S480 on mine so I will need all the room I can get. I am however deleting the a/c which is most of the time the cause of heat issues to begin with (when the a/c is turned on).
I am not saying it cant be done, I strongly suggest against doing a radiator parallel to the ground unless it is strictly a track car. I had what some could call a shop do a single turbo and my dewitts radiator and spal fan setup completely horizontal. Was the worst car when it comes to heat I have ever seen. I tore it all apart within 2 weeks and threw the blower back on and never looked back!!!! Just my 2 cents
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Old Oct 24, 2013 | 09:44 PM
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I am doing exactly what you are talking about for my car due to the forward mounted turbos. I also plan to build a short AC condenser as well since I plan to drive it during the summer here. The rad I have shown,compared to stock is approx 28x15 vs 29x19 but stock is only a single core,mine is dual 1.5 core. If necessary I will also run an external oil cooler,however I am not going to start out that way.Here are a few pics.

Looks alot shorter due to being forward as well as 1" lower in the cradle. Will NOT be below the rad cradle,I dont want to scrape it off.Will still allow room for good size intercooler although I may very well change to a tubular front impact bar to free up airflow.I will post a few more comparison pics tomorrow.

Last edited by highpockets; Oct 24, 2013 at 09:53 PM. Reason: pic
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Old Oct 24, 2013 | 10:49 PM
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Originally Posted by c5austin
I am not saying it cant be done, I strongly suggest against doing a radiator parallel to the ground unless it is strictly a track car. I had what some could call a shop do a single turbo and my dewitts radiator and spal fan setup completely horizontal. Was the worst car when it comes to heat I have ever seen. I tore it all apart within 2 weeks and threw the blower back on and never looked back!!!! Just my 2 cents
I really cant believe how much hotter my Dewitt rad & spal fans run by just cutting it down just the 4 links in the rad to get the 4 inch tube to work for the S/C. Robert
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Old Oct 24, 2013 | 11:58 PM
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Originally Posted by Shoaf85
Look Here!

http://forums.corvetteforum.com/c5-f...done-pics.html

I am going ot lay my radiator down really low may even lay it completely parallel to the ground and stand my intercooler up against the front rail. I'm putting a T6 Borg Warner S480 on mine so I will need all the room I can get. I am however deleting the a/c which is most of the time the cause of heat issues to begin with (when the a/c is turned on).
Looks amazing! And yea I would do something like that(minus the horizontal part) but we are trying to make a New Single Turbo kit to market to our community! I can't say who is making the kit(due to him not being a vendor yet) but it will be a very nice and affordable big single setup from a VERY proven fabricator in the racing world.

We are just making it as easy as possible to install without too much modification.
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Old Oct 25, 2013 | 11:51 AM
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Just a pic I saw online to give you an idea.

Name:  half size radiator mod.jpg
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Size:  64.6 KB
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Old Oct 25, 2013 | 06:15 PM
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Check out the fmic thread that was just posted
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Old Oct 25, 2013 | 09:19 PM
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Originally Posted by robert miller

I really cant believe how much hotter my Dewitt rad & spal fans run by just cutting it down just the 4 links in the rad to get the 4 inch tube to work for the S/C. Robert
Im not understanding this post. Cut down radiator ran hotter than stock?
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Old Oct 26, 2013 | 07:28 PM
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Originally Posted by Mike Farris
Im not understanding this post. Cut down radiator ran hotter than stock?
Mike, what I was trying to say here same radiator same fan set up. But I had just the 4 links cut out of it to get the 4 inch tube for the S/C and my water temp went up 10 to 15 degs in just that little cut out of it for the street. Now I am talk street temp of 95 to 100 deg temp with the AIR on the car..Robert
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Old Oct 26, 2013 | 07:45 PM
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Originally Posted by robert miller
Mike, what I was trying to say here same radiator same fan set up. But I had just the 4 links cut out of it to get the 4 inch tube for the S/C and my water temp went up 10 to 15 degs in just that little cut out of it for the street. Now I am talk street temp of 95 to 100 deg temp with the AIR on the car..Robert
your experience has nothing to do with this setup hes going to run a thicker core than yours so it can be smaller in size but thicker core like 2 core vs. 4 core radiator it will cool
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Old Oct 26, 2013 | 08:27 PM
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I bet if capacity was the same and the amount of air flowing through the rad was the same as a wider one you might be good to go daily driver wise.
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