question about koyo radiators

[jrb92se]

ok im going to order a koyo my brother told me that there are copper and aluminum rads available from koyo for the s13 and that the copper radiator is the same thing as the aluminum but its not as showy he says that the main difference is the price 175 for copper 300 for aluminum and the copper will cool just as good is that true? also i have an rb25 swap in an s13 i was told to just get one for an sr is that true also? thanks
Modified by jb96s14 at 5:51 PM 10/12/2006

[Joe]

they stopped making the copper ones if im not mistaken

and in real world the aluminum ones work better.

[M.O.B]

Also your gonna want the ka radiator

[Bluefire]

ok im going to order a koyo my brother told me that there are copper and aluminum rads available from koyo for the s13 and that the copper radiator is the same thing as the aluminum but its not as showy he says that the main difference is the price 175 for copper 300 for aluminum and the copper will cool just as good is that true? also i have an rb25 swap in an s13 should i was told to just get one for an sr is that true also? thanks

The copper radiator should actually cool better versus aluminum. But the aluminum will be much lighter in weight. It also has the bling factor...

-Bluefire

[lucky7]

you want the KA radiator, like M.O.B. said. the Sr is backwards and wont line up.

[themadscientist]

copper cools better than aluminum but I have never seen a copper koyo.

[Ramius83]

Well, I know that they just starting making new Koyo Copper Cores for 2007 for the SR20 because I just purchased one on eBay about a month ago. Of course it is for the SR and has the upper hose outlet on the wrong side, but that isn't to say you couldn't have a radiator shop switch the KA and SR upper endtank around for you......

[jrb92se]

so the sr and ka radiators are different good thing i didnt order it then. is the koyo copper you got from fleabay just an oem replacment or is it bigger then stock? does anyone have a part number for the correct radiator that i need for my application it would make my life alot easier

[jrb92se]

would you go with copper or aluminum in your own car. i read another thread about it that says copper cools better

[rotorimp]

If your going to spend the money buy one that will not leak--get a Griffin they are very nice AL/ construction and the best part is they do not leak at the radiator cap.----I have yet to see a KOYO that does not leak at the cap.

[jrb92se]

so i shouldnt get a koyo even though every really powerful 240 ive seen has one. what is everyone elses opinion on the different brands koyo,fluidyne,etc which is best i know fluidyne is very expensive.............also i was just looking at the koyo website and they dont have a listing for a KA24DE radiators can someone get me a part# please..
Modified by jb96s14 at 9:35 AM 10/10/2006

[hannibal]

C1441. Thats for a KA-DE S13 with manual transmission.

I called Koyo a few months ago to ask. Most Koyo distributors should be able to get you the copper radiator thought I rarely see them advertised. Call Koyo at (888) 557-5696 to confirm ...

[Carl H]

copper has better thermal conductivity properties than al but it isnt as bling and is slightly heavier.have a read here, learn something new every day.http://home.satx.rr.com/nissan...t.htm

[Joe]

if you can afford it the C&R dual pass is the best radiator ever made.

[jrb92se]

ive seen that before i think theres another thread with a link to it some where. i made that same bottom plate myself a few months ago before i saw that; mine looks almost indentical. i tried to make a top panel but i just couldnt make it look right. to be honest the bling thing to me doesnt matter. i talked to one of the mechanic at fever racing he said the copper koyo radiator cools better for the size but the aluminum is bigger and holds more coolant and he says that it is just as efficient due to the size difference i made sure he knew i wasnt going to order it from them to get an unbiased opinion. even thier graphs and charts seem to show that the copper is better. if so then why does everyone run and spend twice as much for the aluminum? so do all the guys with big hp cars with aluminum radiators only do it for looks? i just checked out the c&r site it says thier radiators are all custum and handmade i doubt i could afford that. i love your s14 btw.
Modified by jb96s14 at 12:23 PM 10/10/2006

[Carl H]

ive found that when you tack the word racing on to anything you can get anyone to buy it.case in point the buddy club racing spec condenser, does it do anything? no. but it did have pretty blue lights so i bought it.

[jrb92se]

ok i told him to order me an aluminum koyo for an s13 with a ka24de he said that its gonna be 341 drop shipped to my door i hope its not one of those koyos that look like a regular radiator but made of aluminum. i still think that is way too much for a radiator couldnt i just use an s14 radiator or something. they dont have koyo coppers for the ka according to him so i had to get the aluminum one. will a radiator thats made for a ka even work any better

[jrb92se]

did you say that the buddy club racing spec condenser has blue lights on it? wtf?

[kouki-gymkhana]

First of all, you got raped on the price for that Koyo. I picked mine up about 6 months ago for $309 shipped to my door with a high pressure cap. You want to make sure you have the Koyo RACING model for the KA, not the OEM replacement one. You should head back to ebay and read those model numbers closely because some of the auctions I've come across in the past have shown pics of the Racing version at that price but the model number is for the OEM one. Watch your back. Secondly, if you're going to install that sucker, do yourself a favor and mod your upper and lower rad supports so you can squeeze your e-fans in as pullers. That way if you want to run A/C in the future, you can still mount a condenser in front of the rad.

[Carl H]

yes it does.

[jrb92se]

kouki what is the part number for the koyo racing so i can cross reference and im not buying it from ebay my brother got it for me thats actually 24 dollars cheaper then it would be with tax if i bought it from a local shop does koyo have a website i found a site for koyo but i dont think it is legit

[Bluefire]

IMO the Koyo aluminum radiator sucks big ***, but hey i'm a cheap *** like everyone else, so I have a koyo. But like someone mentioned before, if your gonna spend money on a fluidyne/greddy/apex'i/blitz/etc... Your much better off ordering a custom sized DP radiator from griffin or C&R. Combined with puller fans and proper ducting, you'll have a winning combination. If you want to go a step further, a properly setup breather tank will also help.

-Bluefire

[jrb92se]

ive seen those breather tanks on magazine cars before what exactly do they do. and to me the koyo radiator was too exspensive already i was about to get a discount auto ka radiator. also i already made some paneling for the bottom and ive got two pullers on a thermostat switch and one pusher that runs with the car

[hannibal]

Some relevant info in the thread I mentioned earlier...zerothread?id=138051

[NightKids2]

I forgot to turn my fans on once and cracked my radiator or I would have never used my Koyo I have sitting in my garage for months. Its too big, and gives me no noticable difference in temperature at all.

Only plus side Ive found is that I havent managed to break it yet =)

[jrb92se]

the radiator i have now is a half an inch think so i would imagine the koyo will be much more efficient . also i gave my brother that part number and he said it was wrong he couldnt pull anything up with it

[Carl H]

you'll find that the racing koyo helps to prevent over heating by offering increased capacity and more surface area to disperse heat, but in the end it doesnt cool any better than a stock rad...ive found that koyo rads tend to be restrictive in airflow thru the core due to close fin spacing, while the close fin spacing promotes better cooling it hinders airflow and with pusher fans you are already starting out inefficiently so having a core that large makes it even worse...

[krayton]

the koyo is bigger and takes longer time to heat it up, but at the same time, its gonna take longer to cool it down.

pullers and good ducting would be best on a koyo, but kamin is running pushers with ducting (the key) with no problems.

an expansion tank/breather is meant to be higher then the engine to help take all the air out of the system. install one at the highest point and use it to fill up the cooling system to make it the most efficient

[kouki-gymkhana]

kouki what is the part number for the koyo racing so i can cross reference and im not buying it from ebay my brother got it for me thats actually 24 dollars cheaper then it would be with tax if i bought it from a local shop does koyo have a website i found a site for koyo but i dont think it is legit

You want part number R1276. I went with Koyo because it was the best upgrade for the $$$. I couldn't afford a C&R or Griffin rad and to be honest, with proper ducting and e-fan mounting, it should work just fine in the Florida heat for a street car.

[themadscientist]

[QUOTE=Carl H]ive found that when you tack the word racing on to anything you can get anyone to buy it.QUOTE]Ain't it the truth. This damned HKS racing stapler doesn't go any faster than than my swingline and while I did opt for the titanium staples I see no appreciable difference.