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I do not have them on my 25 e with 8 k on it as i have never seen over 200 degrees in panhandle florida traffic or highway . From what little I have read they do work/needed on European cars because of their special exhaust systems ....... car makers test pretty much extreme tempertures
I do not have them on my 25 e with 8 k on it as i have never seen over 200 degrees in panhandle florida traffic or highway . From what little I have read they do work/needed on European cars because of their special exhaust systems ....... car makers test pretty much extreme tempertures
I saw a test on YouTube where it didn't have much effect on coolant temps., but did reduce the oil temp by 10 degrees.
Has anyone tried those under body cooling fin thingys that direct air up into the engine bay? Do they work?
I put them on my 2024 Stingray and noticed absolutly no difference in coolant or oil temps. In dact Josh Holder when asked the question on Corvette Today Podcast this week said there is absolutly no benefit to them unless you have a european c8 with the particulate filter.
Have them on both my Z06 and ZR1. Cannot beat additional cooling no matter the effectiveness level - simply put, more is better.
Absolutly, just saying these guys that claim 40-50 degree drops are most likely exagerating a bit. If it made that much difference gm would put them on every c8. Like I said I have them, spent the money for the GM parts and will remove them and add them to my Grand Sport when the time comes.
They are on the european models to cool the gas particulate filters that are on their exhaust system. Since US models don't have them, we don't get the air reflectors. They have zero effect on cooling the engine.
It does have an effect on cooling the engine compartment.
I could see a temp drop in that range IF you look at the correct sensor. NOT the oil temp or coolant sensor, The engine bay temp sensor is the one to look at. also lowering the bay temp sensor will help with IAT temps, which directly effect performance.
I could see a temp drop in that range IF you look at the correct sensor. NOT the oil temp or coolant sensor, The engine bay temp sensor is the one to look at. also lowering the bay temp sensor will help with IAT temps, which directly effect performance.
Like I said I have them and will have them as long as I have a C8 but for street driving I dont see any difference with or without them. I dont track my car so maybe a difference there but You would think if there was any substantial increase they would be on every C8 or at least ZR1's.
In testing at 100F ambient, after running 10 miles and pulling off the interstate. Then waiting for heat soak to push oil water and transmission to 205-208 degrees while stopped. The temps then fell to 170-175 for all 3 temps in about 3miles at 75mph. Then guess what, the thermostats closed and pushed temps to about 185F just like it would in cold climates. This is why some may not understand, and think what they do. The results are with the diy germany ducts that I built. Different products the results may vary.
It may be useful to consider where the ambient air temperature sensor (aka engine compartment air temperature sensor) is located. Attached is an illustration showing where it is - taken from the "Ambient Air Temperature Gauge Sensor Replacement (Engine Compartment Air Temperature) - Removal Procedure" in my 2020 version of Service Manual for SR. The same procedure in the 2024 LEMON manual shows in a slightly different postion - do not know why. I attached that too.
Both say:
"Engine Compartment Air Temperature Sensor
Operating Conditions: Engine = Idling - At normal operating temperature.
Parameter Normal Range: 100to 150°F"
It has key role in determine when the engine compartment cooling fans come on, and at what speed.
In testing at 100F ambient, after running 10 miles and pulling off the interstate. Then waiting for heat soak to push oil water and transmission to 205-208 degrees while stopped. The temps then fell to 170-175 for all 3 temps in about 3miles at 75mph. Then guess what, the thermostats closed and pushed temps to about 185F just like it would in cold climates. This is why some may not understand, and think what they do. The results are with the diy germany ducts that I built. Different products the results may vary.
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They for sure lower engine bay temperatures as verified by the OEM engine compartment sensors readings. I tested itsonlyairandfuel's version and saw a decrease in engine bay temperatures within a couple miles of driving. If you have extra engine bay heat like I do due to headers, cat deletes without coating, etc or maybe a supercharger this could potentially help keep temperatures down . I also have a carbon fiber hatch. Carbon fiber doesnt really love lots of heat so extra airflow can keep my investment from breaking down. (vent areas show signs of heat damage already)
I wouldnt count on lowering actual engine temperatures but mainly exhaust component and engine bay/ rear trunk temps. It's a personalized decision and for some, benefits may outweigh any downsides such as extra dirt in engine bay (more air= more dirt) or potential for some extra drag from below the car.
I have a set of OEM version ones installed as well as the VO9 radiator as my oil temps were getting out of hand on the track (240+). A set of non-oem style installed last season had no effect (without the additional radiator). Oil temps were consistenly 15+ degrees higher than coolant temps without the additional radiator. This season, thus far, has shown oil temps no higher than 5 degrees higher than coolant temps after a lengthy session on the track. Coolant temps are also lower. On the street, oil temps are 25-30 degrees lower than coolant temps where prior they were essentially in sync with each other. If folks want or need to keep their oil temps in control, the V09 mod is the way to go. I used all OEM parts for the install.
