KOYO vs Fluidline vs Godspeed radiators
It is set up to accept the stock S5 rad mount brackets, has a bung for the fluid level sensor and the rad cap fitting is like an S4- i.e., on the endtank instead of on the stalk like the S5.
ah got ya ... just wanted to make sure my Samco hoses would still work!!
Guess I'll be buying one soon. I wanted to go crazy and get a SR Motorsports one .. but 550 bucks is too much for me right now.
Guess I'll be buying one soon. I wanted to go crazy and get a SR Motorsports one .. but 550 bucks is too much for me right now.
Joined: Apr 2005
Posts: 3,785
Likes: 30
From: And the horse he rode in on...
Durability? I know of one Godspeed Rad failure. Any others?
Anyone abandon the Godspeed Rad due to inadequate cooling or other trouble?
-Jack
My Godspeed developed a leak about a year or so after installation but prior to that had performed admirably.
I haven't had it repaired because I'm hesitant to spend money on an inexpensive part and also because the stock rad I pulled from the junkyard ($20!) has been working just fine.
Of interest, perhaps...
I've now been using the stock, plastic tanked radiator for a few months and today- after finally breaching the 80° mark in Denver- was the first time my efan has kicked in.
The stock rad might be more capable than I thought and if I had a S5 thermoclutch/fan, I'd put it on to see what happened.
I haven't had it repaired because I'm hesitant to spend money on an inexpensive part and also because the stock rad I pulled from the junkyard ($20!) has been working just fine.
Of interest, perhaps...
I've now been using the stock, plastic tanked radiator for a few months and today- after finally breaching the 80° mark in Denver- was the first time my efan has kicked in.
The stock rad might be more capable than I thought and if I had a S5 thermoclutch/fan, I'd put it on to see what happened.
We are still using it in the racecar. I just went v mount with Godspeed radiator. Here is the link
https://www.rx7club.com/west-rx-7-forum-193/my-new-custom-v-mount-956227/
https://www.rx7club.com/west-rx-7-forum-193/my-new-custom-v-mount-956227/
woot woot!
whatever rads you guy buy invest in a really big/good e-fan if you dont mind the extra whoosh noise from the bay! we have to keep these apex blowing engines as cool as possible!
anyone have experience with radiator panels? not sure if i really need one or not.
whatever rads you guy buy invest in a really big/good e-fan if you dont mind the extra whoosh noise from the bay! we have to keep these apex blowing engines as cool as possible!
anyone have experience with radiator panels? not sure if i really need one or not.
Godspeed exterior fit and finish is pretty darn good. However...when you look inside it's quite messy. There are a lot of overhangs and weld hanging out inside the coolant flow path which could cause slightly lower performance qualities.
Here it is in front of my old Koyo. Viewable welds are very good, same quality as the Koyo. Despite the viewing angle, they're both the same dimensions.
Any proof of poor internals, in the form of pics?
I just put in a KOYO in my S4 TII. I'll give an update in a few months on
how it is doing on the track. It bolted right in. I was still able to use
the stock fan shroud and stock fan (I'll probably cut off the top and bottom ears).
Stock air box and stock battery holder fits with no problems.
how it is doing on the track. It bolted right in. I was still able to use
the stock fan shroud and stock fan (I'll probably cut off the top and bottom ears).
Stock air box and stock battery holder fits with no problems.
I just put in a KOYO in my S4 TII. I'll give an update in a few months on
how it is doing on the track. It bolted right in. I was still able to use
the stock fan shroud and stock fan (I'll probably cut off the top and bottom ears).
Stock air box and stock battery holder fits with no problems.
how it is doing on the track. It bolted right in. I was still able to use
the stock fan shroud and stock fan (I'll probably cut off the top and bottom ears).
Stock air box and stock battery holder fits with no problems.
Does that mean you had issues? Because I think you mentioned you put a GS rad in? Just curious cause I was interested in the godspeed rads.
Whats your cooling setup?
Did you have any proof it cooled better than stock, or was it just a "reliability mod" since its alum?
Do you have any temp gauges?
How often and how hard do you drive?
I was given one of these radiators as a gift (new), Waiting on silicone hoses and some gauges before I install it... Want to keep steady track of what it changed, and how its doing, before install. (keeping stock fan and shroud, for now.)
This thread has so much discussion throughout the years, some stuff never really got covered.
Do I have it right that the FC cooling system can't really match up well with the design of the GS rad?
If this is the case, how do you build a better cooling system to match what the GS rad can do? Ducting? E-fan? Different water pump?
Do I have it right that the FC cooling system can't really match up well with the design of the GS rad?
If this is the case, how do you build a better cooling system to match what the GS rad can do? Ducting? E-fan? Different water pump?
Like many threads it devolved into an opinion war. One guy making inferences to a SAE doc on radiator theory and others like Rob relating his real world datalogged experience sharing his car with two other drivers as they flogged his Godspeed rad equipped 300+rwhp car all day in the brutal heat of Southern California deserts.
In theory, the dual-pass design of the Godspeed could put an extra load on the OEM waterpump with never specified repercussions. But no one with a Godspeed or a dual-pass Koyo have suggested they had any issues. Nothing like...
"I installed a Godspeed rad and my waterpump housing shattered killing 15 hipsters hanging out in a Starbucks. It seemed a lot like last year after I installed my Koyo dual-pass and hotspots developed causing molten slugs of rotor housing to eject from the car maiming 12 Goth kids at Hot Topic."
No one said anything like that at all! The only negative experience anyone reported with the GS rad was Clokker's developed a leak (of unspecified nature and severity) after a year of trouble-free use.
And if you have an S4 you'll need to acquire some S5 radiator brackets. And you may need to mod your fan shroud if you arent going electric.
Opinion wars will never be "covered" and nothing will ever be settled. So you need to decide based on the quality and nature of people's posts who to trust. For me, fc3s91, agreen, clokker and jackhild59 are all reputable posters and based on their posts about their experiences with the Godspeed rad we bought one a few weeks ago for $189 shipped when the plastic topcap split on the OEM unit. But those are people I trust, you need to pick your own!
We've been running 90+ with Houston grade humidity and with the a/c on the temp gauge stays consistently right below the halfway mark. We'll see in a month or two when it's over 100 but for now the GS rad looks like a bargain. A bargain for me today.
In theory, the dual-pass design of the Godspeed could put an extra load on the OEM waterpump with never specified repercussions. But no one with a Godspeed or a dual-pass Koyo have suggested they had any issues. Nothing like...
"I installed a Godspeed rad and my waterpump housing shattered killing 15 hipsters hanging out in a Starbucks. It seemed a lot like last year after I installed my Koyo dual-pass and hotspots developed causing molten slugs of rotor housing to eject from the car maiming 12 Goth kids at Hot Topic."
No one said anything like that at all! The only negative experience anyone reported with the GS rad was Clokker's developed a leak (of unspecified nature and severity) after a year of trouble-free use.
And if you have an S4 you'll need to acquire some S5 radiator brackets. And you may need to mod your fan shroud if you arent going electric.
Opinion wars will never be "covered" and nothing will ever be settled. So you need to decide based on the quality and nature of people's posts who to trust. For me, fc3s91, agreen, clokker and jackhild59 are all reputable posters and based on their posts about their experiences with the Godspeed rad we bought one a few weeks ago for $189 shipped when the plastic topcap split on the OEM unit. But those are people I trust, you need to pick your own!
We've been running 90+ with Houston grade humidity and with the a/c on the temp gauge stays consistently right below the halfway mark. We'll see in a month or two when it's over 100 but for now the GS rad looks like a bargain. A bargain for me today.
-No hard proof, but the stock S4 temp gauge would actually reach 1/2 before. I installed the GS radiator during a standalone install.
-I still use the temp gauge on the dash (S4 temp gauge) for normal driving, but I plug in the laptop on a normal basis and have actually never seen the temperature go over 185F. It's pretty low, but it's fine the way it is.
-I drive it whenever it has gas.
-Hard
Like many threads it devolved into an opinion war. One guy making inferences to a SAE doc on radiator theory and others like Rob relating his real world datalogged experience sharing his car with two other drivers as they flogged his Godspeed rad equipped 300+rwhp car all day in the brutal heat of Southern California deserts.
In theory, the dual-pass design of the Godspeed could put an extra load on the OEM waterpump with never specified repercussions. But no one with a Godspeed or a dual-pass Koyo have suggested they had any issues. Nothing like...
"I installed a Godspeed rad and my waterpump housing shattered killing 15 hipsters hanging out in a Starbucks. It seemed a lot like last year after I installed my Koyo dual-pass and hotspots developed causing molten slugs of rotor housing to eject from the car maiming 12 Goth kids at Hot Topic."
No one said anything like that at all! The only negative experience anyone reported with the GS rad was Clokker's developed a leak (of unspecified nature and severity) after a year of trouble-free use.
And if you have an S4 you'll need to acquire some S5 radiator brackets. And you may need to mod your fan shroud if you arent going electric.
Opinion wars will never be "covered" and nothing will ever be settled. So you need to decide based on the quality and nature of people's posts who to trust. For me, fc3s91, agreen, clokker and jackhild59 are all reputable posters and based on their posts about their experiences with the Godspeed rad we bought one a few weeks ago for $189 shipped when the plastic topcap split on the OEM unit. But those are people I trust, you need to pick your own!
We've been running 90+ with Houston grade humidity and with the a/c on the temp gauge stays consistently right below the halfway mark. We'll see in a month or two when it's over 100 but for now the GS rad looks like a bargain. A bargain for me today.
In theory, the dual-pass design of the Godspeed could put an extra load on the OEM waterpump with never specified repercussions. But no one with a Godspeed or a dual-pass Koyo have suggested they had any issues. Nothing like...
"I installed a Godspeed rad and my waterpump housing shattered killing 15 hipsters hanging out in a Starbucks. It seemed a lot like last year after I installed my Koyo dual-pass and hotspots developed causing molten slugs of rotor housing to eject from the car maiming 12 Goth kids at Hot Topic."
No one said anything like that at all! The only negative experience anyone reported with the GS rad was Clokker's developed a leak (of unspecified nature and severity) after a year of trouble-free use.
And if you have an S4 you'll need to acquire some S5 radiator brackets. And you may need to mod your fan shroud if you arent going electric.
Opinion wars will never be "covered" and nothing will ever be settled. So you need to decide based on the quality and nature of people's posts who to trust. For me, fc3s91, agreen, clokker and jackhild59 are all reputable posters and based on their posts about their experiences with the Godspeed rad we bought one a few weeks ago for $189 shipped when the plastic topcap split on the OEM unit. But those are people I trust, you need to pick your own!
We've been running 90+ with Houston grade humidity and with the a/c on the temp gauge stays consistently right below the halfway mark. We'll see in a month or two when it's over 100 but for now the GS rad looks like a bargain. A bargain for me today.
-V-mount
-No hard proof, but the stock S4 temp gauge would actually reach 1/2 before. I installed the GS radiator during a standalone install.
-I still use the temp gauge on the dash (S4 temp gauge) for normal driving, but I plug in the laptop on a normal basis and have actually never seen the temperature go over 185F. It's pretty low, but it's fine the way it is.
-I drive it whenever it has gas.
-Hard
-No hard proof, but the stock S4 temp gauge would actually reach 1/2 before. I installed the GS radiator during a standalone install.
-I still use the temp gauge on the dash (S4 temp gauge) for normal driving, but I plug in the laptop on a normal basis and have actually never seen the temperature go over 185F. It's pretty low, but it's fine the way it is.
-I drive it whenever it has gas.
-Hard
(89 FC has 12k-ish original miles, but I want to get some reliability mods, and upgrades, on before plastic end caps bust.)
I finally had the rad pressure tested and the pinhole was obvious.
Unfortunately, a proper welding repair (as well as an epoxy patch, I suppose) would require hogging out a section of the fins to clear away around the fault.
I was quoted @$100 to weld the hole which I didn't think was a reasonable amount to sink into a $200 part.
Were I back in the market for another FC rad, I'd certainly consider the Godspeed again...it was a good price, fit well and performed great (till it failed).
