My Koyo Rad Install - Nissan Titan Forum
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post #1 of 41 (permalink) Old 02-02-2013, 02:03 AM Thread Starter
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My Koyo Rad Install

Got the Koyo rad and Long TruCool installed tonight. I've never done a radiator install before, so we took our time and enjoyed some brews along the way.

Cracked rad came out well with no issues. Koyo dropped in perfectly. TruCool went in without a hitch. Replaced all the hoses and clamps, no prob. Then we thought we tightened everything down. Warmed her up to temp and checked for any leaks. None. Took it for a spin around the block; stopped and checked for leaks. None. So, after running it for about 30 minutes I opened it from 0-60. Came back home and parked it. Popped the hood to check everything out again and heard something. I was leaking tranny fluid. One of the hoses popped off and blew fluid all over the underside rear section. Retightened all the hose clamps and had to add a quart of fluid after learning how to check the AT fluid. Hopefully everything is good now, I'm tired!

I'll add some pics tomorrow and some more info. It's a good thing I didn't commit to a header install in 2 hours.






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post #2 of 41 (permalink) Old 02-02-2013, 06:25 AM
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Re: My Koyo Rad Install

Very nice on the install. When I did my SR4588 install I had a leak as well nut it happend on first start up, that trans pumped out almost 3/4 of a quart in like 6 seconds lol. The line that came loose was that feed line coming up the side of the radiator on passenger side behind that foam insulation stuff, it was kind of a pita to get to.

Can't wait to see some pics of that Koyo. I bet its awesome quality for sure.

Oh and if u would snap a pic of the Koyo rad cap lol.

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post #3 of 41 (permalink) Old 02-02-2013, 07:04 AM
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Re: My Koyo Rad Install

Make sure to go back and retighten those clamps ever so often like at oil changes. I double clamped mine for chits & giggles. You should have 20* cooler tranny temps now. Congrats!

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post #4 of 41 (permalink) Old 02-02-2013, 08:29 AM
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Re: My Koyo Rad Install


Good thing you caught the loose tranny hose.
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post #5 of 41 (permalink) Old 02-02-2013, 09:52 AM Thread Starter
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My Koyo Rad Install

Some pics added. There is an Allen screw at the bottom of the rad. I don't know what it's for but it has a tiny leak in it. It's about 1 drop per hour. Lol! Anyway, I'll probably drop some Loctite on it or something. My T is still recovering from all the tranny fluid from underneath, so I wiped it down as best I could. Gonna have to retighten all of the clamps again. It's a shame such a pretty radiator is completely covered up. If you guys want any specific pics, let me know!

Milenko: there was no rad cap included with mine, but the OEM fit perfect and doesn't leak surprisingly.

Edit: here is the Allen screw I'm talking about; it's right next to where the lower hose attaches. I didn't even see it until the rad was already in. Anyone know what it's for?


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post #6 of 41 (permalink) Old 02-02-2013, 03:47 PM
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My Koyo Rad Install

Is it for the drain valve?


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post #7 of 41 (permalink) Old 02-02-2013, 04:39 PM Thread Starter
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My Koyo Rad Install

Quote:
Originally Posted by cjoh101 View Post
Is it for the drain valve?


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I don't think so, the drain port is on the opposite side of the rad.


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post #8 of 41 (permalink) Old 02-02-2013, 05:22 PM
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Re: My Koyo Rad Install

That KOYO is a work of art!

Quote:
I believe that's for a coolant temp sensor!


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post #9 of 41 (permalink) Old 02-02-2013, 06:21 PM Thread Starter
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My Koyo Rad Install

Quote:
Originally Posted by gweasel77 View Post
That KOYO is a work of art!


I believe that's for a coolant temp sensor!
Thanks buddy! I tell ya', I'd take another header install over doing this. I do not like messing with this stuff.


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post #10 of 41 (permalink) Old 02-03-2013, 12:48 AM
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Re: My Koyo Rad Install

Very nice, thanks for the info on the cap lol. All that money and Koyo can't add a cap to the top lol.

That koyo is dayum near almost to nice to install lol.

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post #11 of 41 (permalink) Old 02-03-2013, 06:13 AM Thread Starter
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My Koyo Rad Install

Quote:
Originally Posted by MilenkoGT View Post
Very nice, thanks for the info on the cap lol. All that money and Koyo can't add a cap to the top lol.

That koyo is dayum near almost to nice to install lol.
That's kinda what I thought about the cap, maybe it was hiding it the box. I'll have to do a thorough search.

The worst part about the Koyo is that it's hidden.


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post #12 of 41 (permalink) Old 02-03-2013, 06:37 AM
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Re: My Koyo Rad Install

Looking good Jbowles. Temp sensor plug is a cool added touch for sure. Notice the fan cowl cover fit a little ill. Mine fitted the same. After seeing pics of Gweasel naked rad, I went naked too.

Look how sexy she looks, plus you save a little over a lbs. at the nose..

My Koyo Rad Install-086.jpg

My Koyo Rad Install-093.jpg

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post #13 of 41 (permalink) Old 02-03-2013, 06:45 AM Thread Starter
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My Koyo Rad Install

^^^ Sweet! I almost left it off, but decided against it for safety reasons. I'll just have to remember how beautiful she is on the "inside". Lmao!


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post #14 of 41 (permalink) Old 02-03-2013, 02:11 PM
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Re: My Koyo Rad Install

oh yeah, i forgot to mention to you as well about removing the OEM fan shroud lol. I would leave it off. Do you have any more pictures of how the OEM shroud fits the Koyo, seems like there is quite a bit of space.

Plus i dunno if the Airaid MXP you have is touching the shroud now, it would be peace of mind to pull shroud off and keep it from rubbing.

Just remember without the shroud, don't go sticking fingers down in there lol.

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post #15 of 41 (permalink) Old 02-03-2013, 02:28 PM Thread Starter
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My Koyo Rad Install

The shroud bolted up well, although there is a small gap. Still have about an inch between shroud and intake, so I'm good with it.


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