Thraxbert
Well-Known Member
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- #1
Hello, all. As you may or may not know, the Supra (and B58 in general) has two primary heat exchangers. The first is the "high temp" loop for the engine block, serviced by the rearmost radiator with coolant hoses on the upper and lower ends of the driver-side edge.
The second is the "low temp" loop, which helps cool the air-to-water intercooler built into the intake manifold. This coolant is the most important one for performance, as it's designed to bring down the temperature of the compressed air being sent from the turbo before being rammed into the cylinders for boombooms. When you see a "heat exchanger" for the Supra, it's this one and it's the frontmost large radiator in the car. This exchanger is serviced by a 90-deg clip-on hose on each side of the exchanger at the top edge.
There are lots of offerings in the market now and I was getting kinda salty that it was hard to keep track of their specifications. So I've started assembling a table of their capabilities relative to the OEM exchanger. I've done lots of crawling along the web, but some of these specifications are difficult to come by. Just as an example, CSF doesn't disclose how large the core is relative to the OEM unit and instead talks about their tubing, but CSF does publish relative fluid capacity. As another example, all the guys with the biggest radiators are more than happy to publish all their specs. Forge lists core size, fluid capacity, and thickness on their page -- understandably as it's by far the largest option and seems to get a lot less press than CSF, who apparently has the better PR and marketing team.
I would appreciate help filling some of the blanks if you can, but I'll keep digging.
The second is the "low temp" loop, which helps cool the air-to-water intercooler built into the intake manifold. This coolant is the most important one for performance, as it's designed to bring down the temperature of the compressed air being sent from the turbo before being rammed into the cylinders for boombooms. When you see a "heat exchanger" for the Supra, it's this one and it's the frontmost large radiator in the car. This exchanger is serviced by a 90-deg clip-on hose on each side of the exchanger at the top edge.
There are lots of offerings in the market now and I was getting kinda salty that it was hard to keep track of their specifications. So I've started assembling a table of their capabilities relative to the OEM exchanger. I've done lots of crawling along the web, but some of these specifications are difficult to come by. Just as an example, CSF doesn't disclose how large the core is relative to the OEM unit and instead talks about their tubing, but CSF does publish relative fluid capacity. As another example, all the guys with the biggest radiators are more than happy to publish all their specs. Forge lists core size, fluid capacity, and thickness on their page -- understandably as it's by far the largest option and seems to get a lot less press than CSF, who apparently has the better PR and marketing team.
I would appreciate help filling some of the blanks if you can, but I'll keep digging.
| Vendor | Relative Core Size | Relative Coolant Capacity | Thickness |
| Toyota OEM | 1.00X | 1.00X (8.3L) | 27mm |
| AMS | 1.54X | 2.22X | tbd |
| CSF | tbd | 1.59X | 42mm |
| C&R | tbd | tbd | 37mm |
| Forge | 2.70X | 2.77X | 80mm |
| Fluidyne | tbd | 1.40X | 45mm |
| Koyo | tbd | tbd | 48mm |
| Mishimoto | 1.31X | tbd | 41mm |
| Wagner | 2.16X | tbd | 68mm |
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Could a moderator move it to B58 engine, exhaust and drivetrain? Not sure who to tag. Sorry!
are spot on. They do the majority of the testing for us track rats 
(go to the extremes way quicker). This is my 1st car forum and mega respect 
Robert, Zack, & Jesseās knowledge. Do, break, improve, repeat with insane horsepower! Help make this B58 a track beast 
for the rest of us.
