heat issues
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
Yes, plenty do. Spal is a company, and makes TONS of different fans of all types and varieties.
That is like saying does anyone drive a Chevy? Are you talking Silverado 3500 or Bolt? May want to add some specifics.
The base model dual fans are typically a downgrade from stock, the high end high flow PWM are a nice but pricey upgrade.
That is like saying does anyone drive a Chevy? Are you talking Silverado 3500 or Bolt? May want to add some specifics.
The base model dual fans are typically a downgrade from stock, the high end high flow PWM are a nice but pricey upgrade.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
They are c6 related, like I said, they make a whole range of fans. That includes MANY different ones for a c6 corvette.
Thread Starter
Instructor
Joined: Jul 2013
Posts: 103
Likes: 15
heat issues
Not sure what prompted the following response from Steve Jewels:
Hello Unreal,
I hope you are well.
There are mostly good people on the Corvette Forum, some jerks, you unfortunately found one of them.
A post in the C6 section should be assumed to pertain to a C6. LOL
All Spal fans are good to excellent quality. They perform as advertized and have a good service life.
Since you posted in the FI/NO section I assume you have one or the other. FI is more likely to induce heating problems.
I have a LS3, 700+ WHP with a Vortech V-3 Si, the front mount intercooler and a short DeWitts radiator, a DeWitts double fan kit (with Spal fans) and have been having heating issues. Cruising on the highway I would see 235 degrees and higher oil and ECT temps. The intercooler interferes with air flow to the radiator.
I added a sizeable oil cooler with a 9" fan, Improved Racing MHX-520 and a trans fluid cooler, IR MHX also but not quite as large. If you can pull some of the heat out of the oil it will reduce engine temps. I have only had it out once so far. 70 degree day, cruising on the highway, 75 to 85, the oil and ECT temps were ~ 210 to 220. The oil thermostat is 200 deg so that is pretty much as expected. I don't know what the ECT thermostat is.
I sat in a parking lot ideling with the AC on and the temps climbed to 235. Once I got moving on the highway again it cooled back down in about 15 minutes.
Be sure the lip under the radiator is intact. It directs air up into the radiator when you are moving.
Good luck!
Steve
Hello Unreal,
I hope you are well.
There are mostly good people on the Corvette Forum, some jerks, you unfortunately found one of them.
A post in the C6 section should be assumed to pertain to a C6. LOL
All Spal fans are good to excellent quality. They perform as advertized and have a good service life.
Since you posted in the FI/NO section I assume you have one or the other. FI is more likely to induce heating problems.
I have a LS3, 700+ WHP with a Vortech V-3 Si, the front mount intercooler and a short DeWitts radiator, a DeWitts double fan kit (with Spal fans) and have been having heating issues. Cruising on the highway I would see 235 degrees and higher oil and ECT temps. The intercooler interferes with air flow to the radiator.
I added a sizeable oil cooler with a 9" fan, Improved Racing MHX-520 and a trans fluid cooler, IR MHX also but not quite as large. If you can pull some of the heat out of the oil it will reduce engine temps. I have only had it out once so far. 70 degree day, cruising on the highway, 75 to 85, the oil and ECT temps were ~ 210 to 220. The oil thermostat is 200 deg so that is pretty much as expected. I don't know what the ECT thermostat is.
I sat in a parking lot ideling with the AC on and the temps climbed to 235. Once I got moving on the highway again it cooled back down in about 15 minutes.
Be sure the lip under the radiator is intact. It directs air up into the radiator when you are moving.
Good luck!
Steve
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
What I said is still true, for a C6 there is a whole slew of Spal fans, from downgrades to upgrades, and $400 to $1300+. So without specifics to which spal fans you are talking about, all anyone can say it is could be a downgrade, or could be an upgrade.
Spal Dual Fan kit
https://www.prospeedautosports.com/c...pro-02-07-1002
Spal Dual Fan kit
https://www.dewitts.com/products/c6-...21235675463762
Both c6 kits, both dual spal fans, drastically different price and performance. One is a downgrade from stock fan, one is an upgrade from stock fan.
To make it even more confusing, here is a spal brushless single fan, that flows more than the base dual fans, but not as well as the dual PWM fans.
https://www.dewitts.com/collections/...21235675201618
All for C6 vettes, all spal fans.
Spal Dual Fan kit
https://www.prospeedautosports.com/c...pro-02-07-1002
Spal Dual Fan kit
https://www.dewitts.com/products/c6-...21235675463762
Both c6 kits, both dual spal fans, drastically different price and performance. One is a downgrade from stock fan, one is an upgrade from stock fan.
To make it even more confusing, here is a spal brushless single fan, that flows more than the base dual fans, but not as well as the dual PWM fans.
https://www.dewitts.com/collections/...21235675201618
All for C6 vettes, all spal fans.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
You are not a jerk, and no one has said that. I think that guy was implying that I'm a jerk, which makes sense as he is one of the few people I have blocked on this site for being rude and unhelpful. He rather PM you than post in the open forum where he would probably be told again how he is wrong on stuff.
Simply put, the base dual spal fans are worse than stock. The high performance ones, or brushless fans can be a nice upgrade, depending on the setup. I've had a supercharged c6 for 10+ years now, ran all the cooling setups, and all the fan setups listed. This is based off real world actual use, here in hot sunny Arizona. No one is saying spal makes a bad fan, but the OEM Delco fan is pretty damn good, and the low end spal fans don't cool nearly as well as the factory fan so you need to purchase some of the higher end spals if you want an actual improvement in cooling.
Simply put, the base dual spal fans are worse than stock. The high performance ones, or brushless fans can be a nice upgrade, depending on the setup. I've had a supercharged c6 for 10+ years now, ran all the cooling setups, and all the fan setups listed. This is based off real world actual use, here in hot sunny Arizona. No one is saying spal makes a bad fan, but the OEM Delco fan is pretty damn good, and the low end spal fans don't cool nearly as well as the factory fan so you need to purchase some of the higher end spals if you want an actual improvement in cooling.
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Thread Starter
Instructor
Joined: Jul 2013
Posts: 103
Likes: 15
Unreal,
I have an iron block supercharged c6 GS Vert with a stock cooling system, other than the heartbeat heat exchanger from my old setup standard pump and heat exchanger. Runs hotter than I like. Looking to improve my fan setup. I want to leave open the idea of different radiator if needed. My choice then would be the shorter version of the Dewitts, because my air intake tilts up because of the stock radiator height, could not find the dual spal fan setup for the short radiator. Looking for member input on this. setup.
I have an iron block supercharged c6 GS Vert with a stock cooling system, other than the heartbeat heat exchanger from my old setup standard pump and heat exchanger. Runs hotter than I like. Looking to improve my fan setup. I want to leave open the idea of different radiator if needed. My choice then would be the shorter version of the Dewitts, because my air intake tilts up because of the stock radiator height, could not find the dual spal fan setup for the short radiator. Looking for member input on this. setup.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
Runs hotter than you like at slow speeds and idle, or at 45+. Fans do work at slow speeds and idle. If you are overheating then, you need more fan. If you are overheating at speed, you need more cooling (better radiator, oil cooler, etc).
The short dewitts is a big mistake, and even with a full size dewitts you can fit any of the supercharger inlets with maybe a little work, or a little spacing of the cradle. There is no good reason to go smaller radiator. It makes a big performance decrease, for at best easier time installing the intake the once or twice you do that. Prospeed, and others both make a short radiator version if you really want to go that route. Dewitts also does the single 17" fan for a short radiator, but best setup would be full size dewitts with the prospeed full size dual fans.
The short dewitts is a big mistake, and even with a full size dewitts you can fit any of the supercharger inlets with maybe a little work, or a little spacing of the cradle. There is no good reason to go smaller radiator. It makes a big performance decrease, for at best easier time installing the intake the once or twice you do that. Prospeed, and others both make a short radiator version if you really want to go that route. Dewitts also does the single 17" fan for a short radiator, but best setup would be full size dewitts with the prospeed full size dual fans.
Le Mans Master
Joined: Dec 2005
Posts: 6,995
Likes: 1,680
From: Southeast TX
I ran a full size Dewitts with integral engine oil cooler. The was on a Heartbeat blown manual trans Grand Sport. So same supercharger H/E that you're using. I got rid of the stock air/oil engine oil heat exchanger in favor of the built-in unit that the Dewitts uses. My reason for doing that was to get rid of another heat source around the radiator. Side benefit was that the engine oil got to operating temp quicker.
I used a 160* t'stat and more aggressive fan settings. Stock fan. The fan would turn on quicker and ramp up to the fastest fan speed quicker. In anything but hot weather, I thought the engine ran too cool. It could also idle for long stretches sitting still in 95* heat without even thinking of overheating. I don't think I ever saw it over 205 or 210. Normal cruise temp was around 180 in hot weather and 170 in cooler weather.
I used a 160* t'stat and more aggressive fan settings. Stock fan. The fan would turn on quicker and ramp up to the fastest fan speed quicker. In anything but hot weather, I thought the engine ran too cool. It could also idle for long stretches sitting still in 95* heat without even thinking of overheating. I don't think I ever saw it over 205 or 210. Normal cruise temp was around 180 in hot weather and 170 in cooler weather.
Safety Car
Joined: May 2016
Posts: 4,626
Likes: 1,815
From: Erlanger, Kentucky
I have a GS with an E-force. When I installed the supercharger kit, I also installed a DeWitts full size radiator. I have never seen temps over 220F even in 95F high humidity weather. I am also still using the stock fan.
I would start with installing a DeWitts and see what your temps are then. I would also get the version that has the integrated engine oil cooler and then also get the GM lines to allow connection to the ports on the block above the oil filter.
As Old Motorhead said, this will cool the engine oil which will help to control heat.
With the E-force kit, it comes with a water to oil plate cooler that bolts to the block and it definitely helps with keeping more stable oil and coolant temps in combination with the DeWitts radiator.
I would start with installing a DeWitts and see what your temps are then. I would also get the version that has the integrated engine oil cooler and then also get the GM lines to allow connection to the ports on the block above the oil filter.
As Old Motorhead said, this will cool the engine oil which will help to control heat.
With the E-force kit, it comes with a water to oil plate cooler that bolts to the block and it definitely helps with keeping more stable oil and coolant temps in combination with the DeWitts radiator.
Burning Brakes
Joined: Mar 2019
Posts: 833
Likes: 176
From: Indianapolis Indiana area
In heavy traffic I assume you mean frequent stops, setting a lot and lower speeds? You might want to try a 160 stat and adjust the fan settings. Do you have Hp Tuner? How hot is it getting?
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
160 T-stat doesn't help if system is past its capacity. If it is at 180, 200, 220, a 180 or 160 T-stat will all be wide open.
Fan adjustment could help, but factory fan is already pretty close to its limits, and turning fan setting up typically just burns out the connector quicker.
Fan adjustment could help, but factory fan is already pretty close to its limits, and turning fan setting up typically just burns out the connector quicker.
Heel & Toe
Joined: Feb 2020
Posts: 22
Likes: 5
160 T-stat doesn't help if system is past its capacity. If it is at 180, 200, 220, a 180 or 160 T-stat will all be wide open.
Fan adjustment could help, but factory fan is already pretty close to its limits, and turning fan setting up typically just burns out the connector quicker.
Fan adjustment could help, but factory fan is already pretty close to its limits, and turning fan setting up typically just burns out the connector quicker.
Thanks
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
All depends on application, budget and what you want. Money no option, then full size dewitts, prospeed or custom PWM fan setup with custom shrouding. Then improved oil thermostat setup, with largest oil cooler you can fit, if not two one in each fender.
Instructor
Joined: Nov 2017
Posts: 135
Likes: 42
From: Gonzales LA
What I said is still true, for a C6 there is a whole slew of Spal fans, from downgrades to upgrades, and $400 to $1300+. So without specifics to which spal fans you are talking about, all anyone can say it is could be a downgrade, or could be an upgrade.
Spal Dual Fan kit
https://www.prospeedautosports.com/c...pro-02-07-1002
Spal Dual Fan kit
https://www.dewitts.com/products/c6-...21235675463762
Both c6 kits, both dual spal fans, drastically different price and performance. One is a downgrade from stock fan, one is an upgrade from stock fan.
To make it even more confusing, here is a spal brushless single fan, that flows more than the base dual fans, but not as well as the dual PWM fans.
https://www.dewitts.com/collections/...21235675201618
All for C6 vettes, all spal fans.
Spal Dual Fan kit
https://www.prospeedautosports.com/c...pro-02-07-1002
Spal Dual Fan kit
https://www.dewitts.com/products/c6-...21235675463762
Both c6 kits, both dual spal fans, drastically different price and performance. One is a downgrade from stock fan, one is an upgrade from stock fan.
To make it even more confusing, here is a spal brushless single fan, that flows more than the base dual fans, but not as well as the dual PWM fans.
https://www.dewitts.com/collections/...21235675201618
All for C6 vettes, all spal fans.
Melting Slicks
Joined: Jun 2014
Posts: 2,217
Likes: 496
From: NJ
You may need to add both a pusher fan and a puller fan. But then you will need to upgrade your Alternator. Also, a better Radiator is probably in order too. Remember you are pushing nearly twice the amount of heat you had from the stock engine, something got to give.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
Talk with prospeed, but the short mount won't fit on a full size radiator. The full size stuff should fit fine, I had a full size dewitts with full size fans on my A&A and ECS kits, both fit without issue.