MHP 180F 63 Thermostats Now Available
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'09 C63 AMG
MHP 180F 63 Thermostats Now Available
MHP is now offering modified stock/MB (180F open temperature) Thermostats.
The primary benefits of a lower open temperature thermostat are the consistant performance and increased engine engine life. The relatively high open temp stock thermostat assures reduced emissions and therefore isn't optimal for performance applications as the ECU pulls timing when seeing higher ECTs (Engine Coolant Temps).
Lower coolant temps equate to increased engine longevity/durability and allow us to use more aggressive timing tables when custom ECU or ECU/TCU tuning, though even when stock the OEM ECU calibration won't have to pull as much (if any) timing due to heat soak--equating to more consistant performance. Next to detonation/preignition and excessive rpm, heat is the next largest killer of engines.
Real world testing with our own C63 has shown significant reductions in ECTs, 15-25F less depending on application, environment, and driving situation. With the OEM/stock Thermostat we averaged 194-204F ECTs while cruising at 75-80mph. Post MHP T-stat install, we see a consistant 174-180F at the same speed. We also have not witnessed the coolant temp rise above 194F, even after hard WOT beatings, and in stop and go traffic.
When paired with our ECU or ECU/TCU tuning, which turns the cooling fans on earlier, the heatsoak issue with 63s is completely resolved.
Price is $279.99 shipped in the Continental U.S. via UPS/FedEx Ground.
The primary benefits of a lower open temperature thermostat are the consistant performance and increased engine engine life. The relatively high open temp stock thermostat assures reduced emissions and therefore isn't optimal for performance applications as the ECU pulls timing when seeing higher ECTs (Engine Coolant Temps).
Lower coolant temps equate to increased engine longevity/durability and allow us to use more aggressive timing tables when custom ECU or ECU/TCU tuning, though even when stock the OEM ECU calibration won't have to pull as much (if any) timing due to heat soak--equating to more consistant performance. Next to detonation/preignition and excessive rpm, heat is the next largest killer of engines.
Real world testing with our own C63 has shown significant reductions in ECTs, 15-25F less depending on application, environment, and driving situation. With the OEM/stock Thermostat we averaged 194-204F ECTs while cruising at 75-80mph. Post MHP T-stat install, we see a consistant 174-180F at the same speed. We also have not witnessed the coolant temp rise above 194F, even after hard WOT beatings, and in stop and go traffic.
When paired with our ECU or ECU/TCU tuning, which turns the cooling fans on earlier, the heatsoak issue with 63s is completely resolved.
Price is $279.99 shipped in the Continental U.S. via UPS/FedEx Ground.
Last edited by MHP; Nov 15, 2008 at 11:38 PM.
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'09 C63 AMG
Troy,
Coolant temp only. It was 65-70F here for the past 2 days and cruising at 80-90 I stayed below 180F coolant temp. You can tell the motor definitely likes the lack of heat.
We also manipulate on/off temps for the fans so between the two (T-stat,Tuning) we should have the heatsoak issue covered even in stop and go traffic in the middle of summer.
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From: Baton Rouge, La.
Steel Gray 09' C63 AMG
Troy,
Coolant temp only. It was 65-70F here for the past 2 days and cruising at 80-90 I stayed below 180F coolant temp. You can tell the motor definitely likes the lack of heat.
We also manipulate on/off temps for the fans so between the two (T-stat,Tuning) we should have the heatsoak issue covered even in stop and go traffic in the middle of summer.
Coolant temp only. It was 65-70F here for the past 2 days and cruising at 80-90 I stayed below 180F coolant temp. You can tell the motor definitely likes the lack of heat.
We also manipulate on/off temps for the fans so between the two (T-stat,Tuning) we should have the heatsoak issue covered even in stop and go traffic in the middle of summer.
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'09 C63 AMG
Install is kind of a PITA. ~2hrs on a C63. Even a dealer won't be able to tell the difference between it and a stock T-stat (since it's an internally modified stock T-stat) so you could have them do it NP.
Thanks
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From: Maryland
2011 GLK350, 2010 ML350, 2008 C63 AMG
Yes, it will benefit even a stock car. The OEM ECU cal pulls timing when ECU temps rise to help prevent detonation. Allowing the motor to run cooler keeps ECT temps down and timing in the tune.
Install is kind of a PITA. ~2hrs on a C63. Even a dealer won't be able to tell the difference between it and a stock T-stat (since it's an internally modified stock T-stat) so you could have them do it NP.
Thanks
Install is kind of a PITA. ~2hrs on a C63. Even a dealer won't be able to tell the difference between it and a stock T-stat (since it's an internally modified stock T-stat) so you could have them do it NP.
Thanks
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From: Palmdale, CA
Mustang
I don't want to get into trouble regarding this issue, and I applaud your efforts to keep the car cool, but I find it amazing that a T-stat would cost $280.00. What would the stock one cost? I'm beginning to think I wouldn't be able to afford this car.
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'09 C63 AMG
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STi
IMHO, to take full advantage of a cooler/lower temp. thermostat, you need to recalibrate your fans to turn on sooner at a lower temperature. It is fine when your car is in motion but once it sits idling/in traffic for any length of time, your temp will still rises until when the fans comes on.
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'09 C63 AMG
IMHO, to take full advantage of a cooler/lower temp. thermostat, you need to recalibrate your fans to turn on sooner at a lower temperature. It is fine when your car is in motion but once it sits idling/in traffic for any length of time, your temp will still rises until when the fans comes on.
Originally Posted by MHP, see first post
When paired with our ECU or ECU/TCU tuning, which turns the cooling fans on earlier, the heatsoak issue with 63s is completely resolved.
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'09 C63 AMG
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From: Dallas TX area
M5, C63, 335Ci
Andy,
Other than being a time consuming install, is this a DIY for those of us that have done a reasonable amount of work on cars? Does it require any specialized tools?
Thanks,
Mike
Other than being a time consuming install, is this a DIY for those of us that have done a reasonable amount of work on cars? Does it require any specialized tools?
Thanks,
Mike
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'09 C63 AMG
Mike,
Nothing special at all, just a bit cumbersome due to the location. Any seasoned wrench turner can put it in.
Thanks
Andy
)
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From: Los Angeles
2009 C63
My coolant temp has never gone over 199 in aggressive or traffic driving, even with my oil at its max temp that I've seen around 233-234F.
