Forged Racing radiator Vs Koyo aluminum radiator (and rad shrouds)

[esh]

Clearance issues between the koyo and mishi? No, looked pretty good actually, didn't have any pictures and they're boxed up now. My mishi fans and koyo will be for sale. Let me know if you wanted the mishi shroud, they were simply fitted together.

I was under the impression that the koyo rad would not fit with the mishi shroud from Frankiman's build? :

http://forums.gtrcanada.com/gt-r-project-cars/35481-frankimans-street-track-gtr-project-39.html#post408767

^ He also fitted the koyo with the stock fan shroud

The forgedracing rad is looking like a good choice right now

[archaeic_bloke]

Missed 2 really important things.

The tube size on the Koyo is .8mm and on the ForgerRacing is 1.0mm so there is way more tubes and they have more frontal surface area wich doesn't sound like much but on 50 cm rad by 30 cm on the forged racing every .9cm has a tube and on the Koyo is 1.08cm. Is 55 tubes on the Forged Racing and 46 tubes on the Koyo. Using these measurements each tube on the ForgedRacing has 3 square cm of frontal area and the Koyo has 2.4 square cm. add that to the tube count. ForgedRacing 165 square cm of frontal cooling. Koyo 110.5 square cm of frontal cooling. Plus it also has that same extra size on the back as well. So massive extra surface area.

No epoxy has been used in the assembly of ForgedRacing both Brand K and Brand M use it. Epoxy is used to ensure no leaks but is an insulator Forged racing solves this problem by testing every radiator that is produced.

Not all things are equal LOL

I like your argument, it's solid. But what do you think about the cooling properties of the metal alloys? copper Vs. aluminum?

[NismoS-tune]

I like your argument, it's solid. But what do you think about the cooling properties of the metal alloys? copper Vs. aluminum?

I think Copper cools better but aluminum is lighter from what I remember in my metalurgy lessons. Copper is more expensive though.

[GTR-Dad]

Thermal conductivity of metals is best for gold, then copper, then aluminum. Someone with a heat transfer text handy can fill in the values.
Gold is way too heavy for my car.
Dan

[LIGHTSPD]

Yes Gold is way too expensive LOL. Copper is a better cooler but ultimately surface area is needed as well epoxy is an insulator and will drastically reduce that better efficiency. My 2 cents.

Cheers

[albertm7]

figures in W/(m*k) @ 125C
Copper = 400
Gold = 312
Aluminum = 255

http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html

density in g/cm3
Copper = 8.94
Gold = 19.30
Aluminum = 2.70

http://www.wikipedia.org

[VQ38DETT]

FAN SHROUDS!

Mishimoto and forged have similar designs for materials but their only 2 differences are that the Mishi fans are 10" blade type

I show that the Mishimoto FS comes with 2 12" fans, NOT 10".

I think Mishimoto 10" (twin?) is 1050CFM.

Pulled right from their site, 2 12" fans. Each putting out 933.5 CFM, making the shroud over 1850 CFM.

I used to run a two Mishi fans as pushers on a previous build and never once had a problem.