are koyo rads the best???

[weejimmy]

need a new rad and heard a lot about koyo but is there any competitors?
 
koyo is fine but just  wonderd what my options are
 
what about just geting radtech etc to make one or a off the shelf one from them.
 
as its going v-mount i wonderd if the shape of a koyo could be a disadvantage?
 
i think!! ill have around 500 bhp ish mayby and i will do some proper ducting too.
ta peeps

[interloper393]

iv got one fitted and it works great, think theres a pwr rad thats meant to work really well 2

[RobMatthews]

i have a ron davis from america all alloy,profesional looking welds not used it though! but looks like it can handle it self no problem and is chunky size and very good fit with all the fixing holes and fan fixings lining up perfectly.

[Kevin]

Very good radiator, never see really any higher than 85 degree water temps and thats on a spirited drive too!

Fit is spot on too!

[weejimmy]

cool thanks
i think what i ment was is there any CHEAPER rads that work as well?
as the koyo is shaped to fit in a standerd position it is shaped funny, so thought mayby you could get a off the shelf one cheaper like pace intercoolers, for a v mount as you dont need the shaped bits,

[RemarkLima]

I ended up getting a koyo as they have the N-Flo (so a triple pass rad), so anything off the shelf with multiple passes would be best IMHO.

Otherwise if you\'re not worried about shape then the world is your oyster, something off a diesel would work well, the size of the one in my Xantia dwarves the FD one!

[20B_boy]

as its going v-mount i wonderd if the shape of a koyo could be a disadvantage?

In all likeliness the inlet/outlets will be positioned inconveniently, if youre going v-mount buy a v-mount kit and be done with it. Will save u a lot of messing about.

[welshrx-7]

are the koyo rads desighned for modded engines or can they be put on standard setups? i just looking to upgrade my cooling coz it gets really hot under my standard bonnet.

[SiH]

In all likeliness the inlet/outlets will be positioned inconveniently, if youre going v-mount buy a v-mount kit and be done with it. Will save u a lot of messing about.

But a kit will cost you a hell of a lot more

I use a Koyo with a DIY V-mount and it\'s cracking - never seen temps over 95 ish on track.
The stock outlets are a pain positioning wise but it\'s do-able with some creative thinking

They may not be the best full stop, but they certainly seem one of the best value for money ones. You can get them brand new from eBay USA very cheap

[Kevin]

are the koyo rads desighned for modded engines or can they be put on standard setups? i just looking to upgrade my cooling coz it gets really hot under my standard bonnet.

There a good reliability mod no matter what state of tune your car is in mate.

[interloper393]

even on a stock car your gunna benefit from an uprated rad more reliable as they wont split, i got confused lol iv got the greddy fitted to mine with the extra coolent capacity, its awsome! last rex had the koyo and was just as good for keeping the engine coolent temps down, but unless theres plenty of airflow going through it i cant see there being many drops in temps?

[Kevin]

Just a little information logged from PowerFC on streetported FD on standard twins.
Same ambient airtemp when logged with both different radiators.

Standard Radiator cruising in free flowing traffic: 83-84 degrees
Standard Radiator spanked in free flowing traffic: 88-90 degrees
Standard Radiator in que of traffic 5-10mins stationary: 96 degrees

Koyo Radiator cruising in free flowing traffic: 81-82 degrees
Koyo Radiator spanked in free flowing traffic: 84-86 degrees
Koyo Radiator in que of traffic 5-10mins stationary: 88 degrees

Although saying that everytime I see a que of traffic now I whack the aircon on and never really see anything about 85 degrees.

[weejimmy]

well ive made a vmount with my stock rad and a trust intercooler but couldent get temps low enough to map it.
 
its easy enough for me to move or reangle the inlets and outlets if its an alloy rad.
i need to re-think my vmount anyway so mayby a koyo is best and the rad is proberly not the place to try to skimp on

[SiH]

well ive made a vmount with my stock rad and a trust intercooler but couldent get temps low enough to map it.
 
its easy enough for me to move or reangle the inlets and outlets if its an alloy rad.
i need to re-think my vmount anyway so mayby a koyo is best and the rad is proberly not the place to try to skimp on

Are you using any ducting?
I\'ve using an XSpower intercooler and Koyo rad in my V mount, and the temps are icy cold when on the move

However, without any ducting, you may as well have a lump of cheese - a compelte stock setup with the ducting would probably fare better than most un ducted aftermarket ones.

[Draco]

SiH Do you have any pics of your set up please?