Tell me about FB radiators
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Tell me about FB radiators
I'm curious how the FB radiator changed over the years. As I understand it, the SA started with the shorty with standalone oil cooler hung underneath. Once 83.5 hit, they went to a tall radiator and moved the cooler to the beehive, but what about the SE? When the motor grew by 3/4" and a standalone was needed, did Mazda go back to a shorty? Is it a tall, thinner radiator with the cooler mounted ahead of it?
Just curious to get the full story.
Just curious to get the full story.
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So the core support is different? I know it's got an air hole for the intake, but I guess they could add tabs to the front for the oil cooler.
Are the lines the same, just stretched a bit?
Are the lines the same, just stretched a bit?
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Exactly. January is right in the middle of the run. They were ready to retool on 6/83 The SE cooler shown by additct looks like it's still suspended from above. Are their brackets on the sides of the core support that go forward to hang it from? I've also noticed in doing e-fan conversions that an 82 12A still doesn't leave a LOT of room ahead of the fan. Is the SE radiator any thinner or have a different number of cores?
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Not a big deal, just curious where it hangs from. The earlier 12As let it hang from the radiator support, but it's no longer underneath on an SE.
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#13
FB+FC=F-ME
Correct.
All 84-85 cars had the SE oil cooler mounts,it was part of the chassis that was installed/welded before the car got far enough along on the assembely line to be given a trim level.
The larger 83-85 radiator is thinner,but has more surface area so it cools better.This was done because the radiator now has to handle the extra BTU's that the water/oil cooler is pumping into the coolant.About 30% of the rotaries heat is drawn away by the oil,but in the 83-85 cars 100% of it is handled by the water in the end,so a larger radiator was needed.
So the SE has,in essence,a bigger radiator.Since the oil is handled by a dedicated cooler,the radiator has less work to do,save for the slightly larger size of the 13B.
All 84-85 cars had the SE oil cooler mounts,it was part of the chassis that was installed/welded before the car got far enough along on the assembely line to be given a trim level.
The larger 83-85 radiator is thinner,but has more surface area so it cools better.This was done because the radiator now has to handle the extra BTU's that the water/oil cooler is pumping into the coolant.About 30% of the rotaries heat is drawn away by the oil,but in the 83-85 cars 100% of it is handled by the water in the end,so a larger radiator was needed.
So the SE has,in essence,a bigger radiator.Since the oil is handled by a dedicated cooler,the radiator has less work to do,save for the slightly larger size of the 13B.
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