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Old 04-20-2015, 04:49 PM   #1
02BlueSuperRoo
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Default Aftermarket radiator and thermostat, word of caution

Jut wanted to let the community know about my experience with a certain aftermarket part that happened today. In early 2013 I hit a deer with my 2011 WRX and replaced some parts with aftermarket parts. I bought a Mishimoto radiator kit from Import Image Racing which included the aluminum radiator, Mishimoto hoses, and a "Gimmick Motorsports" thermostat (fitting name).

Fast forward to today. My car sat all last week because I was out of town and within a couple minutes from my house I noticed the car was almost up to the "red" on the water temp sensor. I limped it back home and it never went all the way into the red but was bouncing just below it. Turns out the thermostat stuck which caused the overheating and my mechanic said one of the seams on the radiator was blown out from the high pressure.

Just wanted to put this out there. It's my problem and I'll deal with it. The parts are over 2 years old, but I feel it's still good to get this stuff out in the open. I'd hope for over $300, a radiator could absorb such treatment and as for the stuck thermostat, I know it happens but damn.
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Old 04-20-2015, 05:52 PM   #2
Rizen
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Try and find a thermostat that is designed to open when it fails. GrimmSpeed used to sell a 160* thermostat that would fail in the open position, but it looks like they don't offer it anymore. That will avoid the problem.
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Old 04-21-2015, 10:08 AM   #3
02BlueSuperRoo
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Thanks for the suggestion
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Old 04-21-2015, 05:01 PM   #4
Mishimoto
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Quote:
Originally Posted by 02BlueSuperRoo View Post
Jut wanted to let the community know about my experience with a certain aftermarket part that happened today. In early 2013 I hit a deer with my 2011 WRX and replaced some parts with aftermarket parts. I bought a Mishimoto radiator kit from Import Image Racing which included the aluminum radiator, Mishimoto hoses, and a "Gimmick Motorsports" thermostat (fitting name).

Fast forward to today. My car sat all last week because I was out of town and within a couple minutes from my house I noticed the car was almost up to the "red" on the water temp sensor. I limped it back home and it never went all the way into the red but was bouncing just below it. Turns out the thermostat stuck which caused the overheating and my mechanic said one of the seams on the radiator was blown out from the high pressure.

Just wanted to put this out there. It's my problem and I'll deal with it. The parts are over 2 years old, but I feel it's still good to get this stuff out in the open. I'd hope for over $300, a radiator could absorb such treatment and as for the stuck thermostat, I know it happens but damn.
Sorry to hear you experienced radiator failure! A stuck thermostat can certainly result in overheating which will raise coolant system pressure. We rarely see failures with our products, in fact we have a failure rate well below industry standard. This is rather unusual and we truly apologize for the inconvenience.

Have you contacted our customer service team in regards to obtaining a warranty replacement? If not, please submit a claim using the form below and we will be in-touch as soon as possible.

http://www.mishimoto.com/warranty-info.html

Again, I apologize for the inconvenience!

-John
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Old 04-21-2015, 10:01 PM   #5
02BlueSuperRoo
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I did contact them and they were very helpful! My warranty claim has been started.
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Old 04-23-2015, 10:52 AM   #6
Mishimoto
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Quote:
Originally Posted by 02BlueSuperRoo View Post
I did contact them and they were very helpful! My warranty claim has been started.
Fantastic! Let us know how the process goes, we will do our best to get you up and running as soon as possible.

Once again, I apologize for the failure you experienced.

-John
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Old 04-23-2015, 12:00 PM   #7
02BlueSuperRoo
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Quote:
Originally Posted by Mishimoto View Post
Fantastic! Let us know how the process goes, we will do our best to get you up and running as soon as possible.

Once again, I apologize for the failure you experienced.

-John
I ordered a new radiator to put in the vehicle instead. I didn't have time to wait for a parts warranty claim to process for my vehicle to get back on the road.
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Old 04-29-2015, 11:20 AM   #8
CookKnowsBest
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I have the Mishimoto radiator on my car but I go the Mishimoto 160* Thermo and it has been on there for 2+ years and have had no issues. Sucks that your thermo got stuck and you had to buy a new radiator. What did you buy to replace the Mishimoto?
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Old 05-02-2015, 12:02 PM   #9
sik20fan
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hmmm interesting
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Old 05-07-2015, 04:28 PM   #10
02BlueSuperRoo
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Quote:
Originally Posted by CookKnowsBest View Post
I have the Mishimoto radiator on my car but I go the Mishimoto 160* Thermo and it has been on there for 2+ years and have had no issues. Sucks that your thermo got stuck and you had to buy a new radiator. What did you buy to replace the Mishimoto?
I bought an OEM
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Old 05-13-2015, 10:28 AM   #11
radbeligion
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It's a bummer having to go OEM over the nice aluminum one you had in there. My 02 got a new radiator about 4-5 years ago and I now have to replace it again due to the plastic tanks being prone to cracking over time. Mishimoto's presence here on the forum and warranty is definitely something I will keep in mind though during my research for a good aftermarket.
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Old 05-30-2015, 04:22 PM   #12
wrx0311
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Quote:
Originally Posted by radbeligion View Post
It's a bummer having to go OEM over the nice aluminum one you had in there. My 02 got a new radiator about 4-5 years ago and I now have to replace it again due to the plastic tanks being prone to cracking over time. Mishimoto's presence here on the forum and warranty is definitely something I will keep in mind though during my research for a good aftermarket.
I have a Mishimoto aluminum radiator in my 03 after the ****ty oem one cracked. I promise you that you won't be disappointed. It's a wonderful piece and their products and service are amazing.
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