Chan_man808

Ok before I get flamed yes I have searched.

A lot of the old advise was to get the biggest/thickest radiator possible, it looks like a lot of the company's have gone away from making the thick radiators now. The biggest pwr (c&r) you can order is a 42mm, Koyo is either a 36mm v core or a 48mm racing version. CSF comes in a 52 mm thickness , AMS radiator comes in 50 mm, I'm not even going to throw in the ARC cause the cost.

Who has real world experience with these on a FI platform? is the koyo cross flow anything special? is thickness that important? also looking to keep my AC.

A little about my car im making 550 hp running a generic aluminum radiator with the mishimoto pos fan shroud (plan to switch to spal 14 inch fans). I have issues with air flow due to my intercooler and I am experiencing heating issues.

WTFMike

iTrader: (2)

I just run the Mishimoto. I've had 0 coolant temp issues in AZ.

Chan_man808

what fans you running?

bealljk

iTrader: (13)

I run a hammy-down nascar C&R Racing w/a built-in oil cooler element. It's 3" thick / 4 core. It's a little tricky/convoluted on how it's hooked up. I run a single 16" spal with my setup. Furthermore - put thought in to how you will introduce and scavenge airflow to/from the radiator - you can have the best radiator in the world but if you are not free-flowing air to & from it it cannot do its job.

Nothing against WTFMike (as he is a valuable, knowledgable, experienced member) but I am not a fan of mishimoto products.

You're smart for investigating heat mitigation on an FI build. Look into oil cooling as well. Heat is your enemy.

Chan_man808

I've looked through your build what a cool project, im looking to keep a front bumper (but had tossed around the idea of a bash bar). I've already purchased some verus engineering hood vents to try and pull out heat that way. Ive been leaning towards C&R the price is high and its only 1.6 inches thick, s the quality that much better?. I guess im trying to be lazy and get something that fits int he stock location instead of fabing in a big radiator to fit.

bealljk

iTrader: (13)

yea - my setup is quite the anomaly in-that no one else is gonna do what I do or have done ... and I dont know how a AC condenser would be added to my setup if I put AC back in the car.

I dont know if C&R makes a direct drop in - probably not and some modification would be required. I can't speak to the quality as I dont know enough about other radiators on the market. What I like about nascar stuff is it's designed to exceed the requirements of a V8 run at near red-line for hours on end with minimal breaks in-between - good enough for them, good enough for me!

what TT kit are you running? How much boost pressure are you running?

are you sure that you need another radiator? was your previous radiator working and now it's not? Have you re-bled your system ... (I hate to suggest but) have you introduced air-bubbles into your coolant track due to head-lift / head gasket breach?

Chan_man808

yeah they do https://www.crracing.com/product/nis...3-06-42mm-core

well I honestly dont know if it was overheating before because the guage always stays at half way, when I was logging yesterday it got up to 220-230 for a short amount of time. I have the funnel to burp it and sounds like i didnt rev it like i should have been. Car had some major surgery so quite possibly could have bubbles in the system.

My Z is the freakazoid Z with the vr6 in it.

bealljk

iTrader: (13)

nice ... how much power are you putting down with that swap? Did you do the work yourself?

Chan_man808

I got the car from a friend who got it from the guy that has a build thread on here, little did I know what I was getting myself into...... Thing was riddled with god speed parts. Had to cut off the wastegate and bov flange and weld on new tial flanges. He also had it running on a TH400 which was fast, but zero fun in traffic cause of the high stall, so i changed it back to manual. easy right? well then the mega squirt started acting funny so i had to learn that program, needless to say ill never buy such an unique project again lol. Guy claimed 550 to the wheels and trapped 127 mph in the quarter mile so they add up.

WTFMike

iTrader: (2)

I run OEM fans. When they finally die I'll likely swap in some Spal fans. I know Mishimoto isn't the greatest product. However, I beat on my car pretty regularly on 100+ degree days without any coolant temp issues. I also run an OEM t-stat. Sounds like you have a pretty unique build. Do you have any recent pics of it?

BluestreamDE

Mishimoto thermostat, Ebay Special 48mm Aluminum Radiator, Single SPAL 16' fan (capability to have 3000cfm of airflow), Distilled water+Water Wetter instead of regular green 50/50 coolant.

No heat issues at all.

Chan_man808

I think I'm having a thermostat issue so ill look into changing that, passenger side coolant hose is seeing some bulging. When I take it out it will be fine for a while then hike up to 217 ish and wont come down very easy.

You know what ill make another thread with all the updates of the car.

bealljk

iTrader: (13)

very easily could be a thermostat...is one hose hot and one hose cold when you grab them?

Chan_man808

rcdash

iTrader: (18)

Koyo thick radiator with a custom aluminum shroud and twin SPAL fans used to be the standard build for FI by the OGs. Twin Spal 30102044 13" Curved Blade Puller Fans are the way to go! They draw a lot of current so you will want a fan controller that can PWM modulate these super noisy fans.

Chan_man808

I had been looking at the 14" spal fans, I like the how the 13" fits better ill be ordering those, they only move about 100 cfm less then the 14" that's pretty good

Can anyone confirm that the big koyo will fit with AC condenser.

rcdash

iTrader: (18)

I have an AC condensor, so yes! With a custom aluminum fan shroud. And I have space for an oil cooler in front of the condensor and then a big ol IC in front of that...

Chan_man808

So it looks like Koyo stopped making the 52mm and only have a 48mm now, im struggling to find any info showing the difference between the hyper v core 36mm and the 48 mm. my train of thought has always been thicker is better in life and women.

Chan_man808

ran some logs again today and while moving the temp stays stable around 185-190 ish, at slow speed and staying still it starts to climb so all signs point to the fans right?

Ill probably swap in the stock fans till i get spals, could probably benefit from a better radiator also.

iideadeyeii

iTrader: (6)

What does it climb to at idle or did you stop it at a certain point? 20 degrees higher than what you posted as moving temps is common