S2000 Under The Hood S2000 Technical and Mechanical discussions.

Radiators

Old 10-25-2018, 03:31 PM
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I’m driving a 2001 S2K with 103k miles. I feel that I should buy a Denso OE while I can still get one. What else should I consider buying now to install the radiator when needed?
Old 10-25-2018, 03:38 PM
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Koyo OE here and I can confirm it drops right in. No issues installed 2 years.

Utah
Old 10-25-2018, 03:43 PM
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Originally Posted by Slowcrash_101
OE style radiators are refurbished oem ones. New end tanks slapped on the core.
That is probably true for spectra et al, but Koyo says their radiators are new manufacture made in China and Indonesia.

I’ll come here and eat crow if it fails before the OE Denso (which lasted 17 years, impressive).
Old 10-25-2018, 04:56 PM
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I don't think it'll fail, nylon is nylon, if it doesn't leak it should last.
Old 10-26-2018, 07:22 AM
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Originally Posted by riceball777
With the age of these cars I’m surprised that anyone is still actually on the stock radiator still.
I actually would expect longer personally. I replaced one of my Toyota radiators at 200,000 miles, have never touched my other Toyota radiator with 160,000 miles and have run plenty of others past 200k without touching a radiator. If using premix or properly mixing with distilled water they should last a very long time.
Old 10-26-2018, 07:23 AM
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The OEM's are certainly still available. My local dealership got mine next day. Majestic has them as mentioned.
Old 10-28-2018, 11:15 PM
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I have replaced mine with Koyo OE-style in 2015. The box says made in Indonesia. Three years now, no problem.
Old 10-29-2018, 09:33 AM
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Can someone post a picture of the hairline crack area and what to look for -- assuming it's not leaking as that would be an obvious tell.
Old 10-29-2018, 10:00 AM
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Originally Posted by HarryD
Can someone post a picture of the hairline crack area and what to look for -- assuming it's not leaking as that would be an obvious tell.
They look like stretch marks, you have to look closely right next to the upper hose and under the filler neck. Once you start getting these stretch marks it's only a matter of time.

For the record my car had the stretch marks when I got it, and the radiator went the better part of 70k miles before it started leaking. YMMV.
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Old 10-29-2018, 10:44 AM
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Mine was one long, hairline crack that eventually made it through right along the seam between the tank and core. I smelled it when I got home one night and first saw it when I noticed the foam cushion on the side of the radiator was wet. Much better than finding out by a rapid overheating on the highway!

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