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Old 11-19-2013, 12:10 PM   #1
NACHO_WREX
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Default Mishimoto radiator

About a month or so ago I replaced my oem radiator with a mishimoto and was just wondering whoever else has one in a wrx or sti..what your temp reading is? I was expecting it to drop but its still at normal range . The only difference I noticed is that it takes longer to warm up .
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Old 11-19-2013, 01:39 PM   #2
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You have a thermostat...
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Old 11-19-2013, 02:21 PM   #3
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I would read up on how your cars cooling system works. It's actually pretty interesting. As granny said, you have a thermostat.
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Old 11-19-2013, 02:22 PM   #4
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Quote:
Originally Posted by NACHO_WREX View Post
About a month or so ago I replaced my oem radiator with a mishimoto and was just wondering whoever else has one in a wrx or sti..what your temp reading is? I was expecting it to drop but its still at normal range . The only difference I noticed is that it takes longer to warm up .
Do you actually have a water temperature gauge in the car? Or are you reading the dummy gauge on the gauge cluster? If you're reading the cluster, it's not gonna change where the needle stays at, the factory gauge hardly moves unless its super cold or the car is overheating.

-Markos

Edit: Ken and Granny beat me to it.
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Old 11-19-2013, 04:33 PM   #5
NACHO_WREX
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Quote:
Originally Posted by granny View Post
You have a thermostat...
No I do not..
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Old 11-19-2013, 04:35 PM   #6
NACHO_WREX
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Quote:
Originally Posted by Camelbacksubaru View Post
Do you actually have a water temperature gauge in the car? Or are you reading the dummy gauge on the gauge cluster? If you're reading the cluster, it's not gonna change where the needle stays at, the factory gauge hardly moves unless its super cold or the car is overheating. -Markos Edit: Ken and Granny beat me to it.


Interesting no I don't have a actual water temp gauge ..yeah I'm just reading the dash ..so its probably running cooler then it shows? Thx for the info
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Old 11-19-2013, 05:06 PM   #7
granny
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Your radiator doesn't flow coolant until its up to operating temp because your thermostat is closed. When the coolant gets hot enough it opens the thermostat and allows the coolant to flow through the radiator which cools the coolant till the thermostat closes again. A radiator won't change your temp unless the old radiator wasn't efficient because the thermostat closes when it gets too cool. If you want to see your temp go down pull your thermostat(not recommended). Subaru designed your motor to operate at a certain temp and its not good to change that.
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Old 11-19-2013, 05:27 PM   #8
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Quote:
Originally Posted by granny View Post
Your radiator doesn't flow coolant until its up to operating temp because your thermostat is closed. When the coolant gets hot enough it opens the thermostat and allows the coolant to flow through the radiator which cools the coolant till the thermostat closes again. A radiator won't change your temp unless the old radiator wasn't efficient because the thermostat closes when it gets too cool. If you want to see your temp go down pull your thermostat(not recommended). Subaru designed your motor to operate at a certain temp and its not good to change that.
Got ya I'm not trying to change the temp ..I know its not good to have the temp too low also But when I switched radiators I was just expecting it to drop and was wondering what others had experienced ..
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Old 11-19-2013, 05:49 PM   #9
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Quote:
Originally Posted by NACHO_WREX View Post
No I do not..
Why are did you remove your thermostat?

Also, the factory radiator is actually very efficient and designed quite well for cooling your car under most normal conditions. This is to say it has more than enough cooling capacity for your engine even at much larger power levels.

The factory radiator becomes a problem only in certain situations, most of which many of us will not see at our power levels.

Reasons to get a aftermarket radiator:

1) Stock one had the plastic tanks split/fracture.
2) You track the car and the factory one cannot keep up with demands (this is debatable for many cars) as it doesn't have the cooling capacity.
3) You dislike the looks of the stock one and want a nicer looking aluminum end tank one.

But in short, no you will not see a significant drop in running temperature with only installed a new aluminum radiator. Not under 90% of driving conditions. Especially not with the factory dash gauge.
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Old 11-19-2013, 05:51 PM   #10
kpluiten
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Quote:
Originally Posted by NACHO_WREX View Post
Got ya I'm not trying to change the temp ..I know its not good to have the temp too low also But when I switched radiators I was just expecting it to drop and was wondering what others had experienced ..

And as Granny was saying, it really should not drop with a radiator alone because you did not change the thermostat to one of a different value.
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Old 11-19-2013, 06:04 PM   #11
NACHO_WREX
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Quote:
Originally Posted by kpluiten View Post
Why are did you remove your thermostat? Also, the factory radiator is actually very efficient and designed quite well for cooling your car under most normal conditions. This is to say it has more than enough cooling capacity for your engine even at much larger power levels. The factory radiator becomes a problem only in certain situations, most of which many of us will not see at our power levels. Reasons to get a aftermarket radiator: 1) Stock one had the plastic tanks split/fracture. 2) You track the car and the factory one cannot keep up with demands (this is debatable for many cars) as it doesn't have the cooling capacity. 3) You dislike the looks of the stock one and want a nicer looking aluminum end tank one. But in short, no you will not see a significant drop in running temperature with only installed a new aluminum radiator. Not under 90% of driving conditions. Especially not with the factory dash gauge.
Sorry I meant to say no to a aftermarket thermostat still have the factory 1 .
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Old 11-19-2013, 06:04 PM   #12
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Thanks guys for all the info
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