Radiator

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Radiator

Postby blk90celica-ht » Tue Jul 03, 2012 9:43 pm

Well my OEM radiator is in need of replacing and i'm doing some research on what radiator to put in it's place. I'm kinda leaning towards swapping in a Koyo but after reading other post, its not a direct swap and would require modifications to the coolant lines and mounts. Can anyone confirm this?

I also found this radiator on ebay but wasn't sure if it worth buying.

http://www.ebay.com/itm/WINNER-RACING-5 ... 1713wt_698

Any insight would be greatly appreciated.

Thanks.
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Re: Radiator

Postby Corey » Tue Jul 03, 2012 10:04 pm

Keep in mind that with a radiator that thick, the stock rad fan may not be able to squeeze infront of the engine.

Another option is Ron Davis. They make a radiator which is thicker than stock, but not so thick as to prevent the stock fan from bolting up.
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Re: Radiator

Postby underscore » Wed Jul 04, 2012 3:52 am

That eBay one looks like the ASI/Autopower one. 56mm cools great but can actually overcool a bit if you don't have a good thermostat.

And like Corey said, a 56mm will require you to get aftermarket fans, the OEM fan most likely won't clear on a rad that thick.
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Re: Radiator

Postby sentraman » Tue Jul 10, 2012 1:03 pm

I run a mishimoto with fans on both sides and it was very cost effective and still cools great
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Re: Radiator

Postby blk90celica-ht » Tue Jul 24, 2012 8:42 pm

Thanks for your input. Luckily I found a used auto power radiator with a slim line fan. I'll post some pic's of my install. What I'm wondering now is should I swap out my thermostat? Any one have opinions on which one to use?
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Re: Radiator

Postby Awesome-Trac » Fri Jul 27, 2012 7:10 am

I went OEM on the thermostat cause I don't want to do double work if the aftermarket takes a crap
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Re: Radiator

Postby blk90celica-ht » Tue Jul 31, 2012 5:17 pm

Well I finally got around to swapping out the radiator.
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New
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Side/side
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Installed
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All in all its a really good fit and I have plenty of room. (Note I did have to switch the fan to a slim line. I used a 12")

After I did this I let it run for about 10 min then I took it for a 5 mile drive and every thing was great. Today I go to work and the temp gets just above the middle part of the gauge... :shock: So tonight i'm going to double check every thing. Hopefully its just has a bubble in the system.
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Re: Radiator

Postby blk90celica-ht » Wed Aug 08, 2012 8:53 pm

Well i'm thinking my Thermostat is bad. A new OEM is about $30 and the TRD one is around $90. Is the TRD one really worth that much of a difference?
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Re: Radiator

Postby underscore » Wed Aug 08, 2012 8:59 pm

Probably not in a relatively stock car.
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Re: Radiator

Postby Corey » Wed Aug 08, 2012 10:50 pm

With a rad that large, a low temp thermostat will help.

Even with a large aftermarket radiator, it will have a higher heat capacity and be able to cool the coolant faster (ie its warmed up due to idling in traffic), but it will never get any colder than the thermostat temp.

If you actually want to lower engine operating temps, you'll need a lower temp thermostat.

With the TRD thermostat, you can expect to see the stock temp gauge hold just above the 1/4 range of the gauge, and it will actually move when the coolant warms back up due to slow speeds or stuck in traffic.

Since our oil is water cooled, lower temp coolant can transfer to lower oil temps.
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