Dewitts Radiator/fans
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,835
Likes: 5
From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
Dewitts Radiator/fans
Need info from members that have a Dewitts AO5A Radiator and SP463 dual fan setup.
I want to know if there is a way to hook up the Dual fans to the ECM control like the single fan??
I'm sure there is a way, some info wanted, perhaps a wiring diagram!!
Tom Dewitt if you have the answer please pass it on, I'm in Florida and temps are real high!!!
My 427 stroker is not liking it!!
Thanks in Advance for your input!!
I want to know if there is a way to hook up the Dual fans to the ECM control like the single fan??
I'm sure there is a way, some info wanted, perhaps a wiring diagram!!
Tom Dewitt if you have the answer please pass it on, I'm in Florida and temps are real high!!!
My 427 stroker is not liking it!!
Thanks in Advance for your input!!
Racer
Joined: Oct 2008
Posts: 255
Likes: 2
From: Michigan
We are looking into this but it's complicated and it may not be do-able. The new upgraded dual fan system uses two fans, that draw much more power than the factory single unit. As a result, we must supply you with two relay harnesses so you can wire these up with something that can handle the amperage these draw. The relays act as an on/off switch and that's not something what will work with analog controls. With that said, we are NOT electrical engineers, we make radiators. So we've asked a couple of controls people to look into this but that development is going to take several weeks, if it's at all possible.
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,835
Likes: 5
From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
We are looking into this but it's complicated and it may not be do-able. The new upgraded dual fan system uses two fans, that draw much more power than the factory single unit. As a result, we must supply you with two relay harnesses so you can wire these up with something that can handle the amperage these draw. The relays act as an on/off switch and that's not something what will work with analog controls. With that said, we are NOT electrical engineers, we make radiators. So we've asked a couple of controls people to look into this but that development is going to take several weeks, if it's at all possible.
thanks, I've been following some threads, and they all agree that Dewitts is the way to go, I'm ready to buy, but I'll wait and see if someone comes up with some ideas, in the least I'll get the radiator and use the stock fan!!!
thanks for the reply
Phil
Melting Slicks
Joined: Jul 2008
Posts: 2,014
Likes: 2
St. Jude Donor '09-'10
Need info from members that have a Dewitts AO5A Radiator and SP463 dual fan setup.
I want to know if there is a way to hook up the Dual fans to the ECM control like the single fan??
I'm sure there is a way, some info wanted, perhaps a wiring diagram!!
Tom Dewitt if you have the answer please pass it on, I'm in Florida and temps are real high!!!
My 427 stroker is not liking it!!
Thanks in Advance for your input!!
I want to know if there is a way to hook up the Dual fans to the ECM control like the single fan??
I'm sure there is a way, some info wanted, perhaps a wiring diagram!!
Tom Dewitt if you have the answer please pass it on, I'm in Florida and temps are real high!!!
My 427 stroker is not liking it!!
Thanks in Advance for your input!!
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,835
Likes: 5
From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
I'll call Jeremy tomorrow, as far as the terminal have you got some pictures?? were did you put it? that terminal is a poor excuse for a high voltage connector, I've seen a few totally melted, mine melted going to PBIR Saturday, or should I say coming back from Okeechobee after calling and getting a rain update/cancel.
thanks
Phil
thanks
Phil
Melting Slicks
Joined: Jul 2008
Posts: 2,014
Likes: 2
St. Jude Donor '09-'10
Here you are......
I chose aluminum as it it is a better conductor than SS and still corrosion proof. I will crimp, connect, wrap in mastic (tape), amn the heat shrink tubing. These will never melt! 
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Melting Slicks
Joined: Jul 2008
Posts: 2,014
Likes: 2
St. Jude Donor '09-'10
I really cant say how much cooler because at the time I put them in I also boosted my HP, changed my gearing to 4.10, and the outside temps have jumped northward. I would guess under normal conditions 10-15 degrees.
Last edited by CPG1962; Jul 29, 2009 at 06:42 AM.
Racer
Joined: Jan 2009
Posts: 405
Likes: 1
From: SPRING CREEK NEVADA
Yes but the problem is (actually with or w/o) the Dewitts Dual fans is the connector melts if the fan is programmed above 85%. That is wmy I fabricated the new connectors. I dont need to be left on the side of the road for something stupid like that. The dual fans will draw for amps thus more heat and higher chance of melting the connector. I would suggest making something to improve or bypass the connector.
I really cant say how much cooler because at the time I put them in I also boosted my HP, changed my gearing to 4.10, and the outside temps have jumped northward. I would guess under normal conditions 10-15 degrees.
I really cant say how much cooler because at the time I put them in I also boosted my HP, changed my gearing to 4.10, and the outside temps have jumped northward. I would guess under normal conditions 10-15 degrees.
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,835
Likes: 5
From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
On my stock fan/radiator setup when I set the fans to 95% it started to melt the center/blk wire treminals, the wires are heavy enough but not the connector, and the heat/resistance melts the connector in the center only!!!
So if you do a heavier connector it will be fine, that's what I'll be doing.
So if you do a heavier connector it will be fine, that's what I'll be doing.
Burning Brakes
Joined: Jul 2006
Posts: 824
Likes: 3
From: Houston, Tx.....'05 Corvette M6 LS3 Magnuson Heartbeat
......Good info guys, keep it coming. But, I feel that if DeWitts knows their C6 dual fan kit is not a "plug-n-play" for daily use/street application it should be mentioned in there website (John or Tom). DeWitts is a great supporting forum vendor and offers a quality product, however I'm disappointed in the response "We are NOT electrical engineers, we make radiators".
Here's the link to the DeWitts C6 dual fan kit....
http://www.dewitts.com/pages/product...asp?ProdID=427
To say, "kit includes relays & wiring" leads me to assume it's a direct replacement to the OEM fan that will provide 40% air flow over stock.
Perhaps, but it doesn't mention the potential power draw problem. I WOULD NOT have purchased the C6 dual fan kit as an "upgrade" to my A05A radiator order if that information was disclosed up front. I hope DeWitts will provide a workable solution soon and as a minimum, edit the website listing.
Racer
Joined: Oct 2008
Posts: 255
Likes: 2
From: Michigan
M Le DEz, We didn't mean to mislead anyone on our C6 dual fan upgrade. I will definitly address the wiring issue better on our website. By no means is it a direct replacement to the stock single fan it has two fans.
M LeDez if you are unhappy please return it for refund.
M LeDez if you are unhappy please return it for refund.
Melting Slicks
Joined: Jul 2008
Posts: 2,014
Likes: 2
St. Jude Donor '09-'10
M Le DEz, We didn't mean to mislead anyone on our C6 dual fan upgrade. I will definitly address the wiring issue better on our website. By no means is it a direct replacement to the stock single fan it has two fans.
M LeDez if you are unhappy please return it for refund.
M LeDez if you are unhappy please return it for refund.
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,835
Likes: 5
From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
......Good info guys, keep it coming. But, I feel that if DeWitts knows their C6 dual fan kit is not a "plug-n-play" for daily use/street application it should be mentioned in there website (John or Tom). DeWitts is a great supporting forum vendor and offers a quality product, however I'm disappointed in the response "We are NOT electrical engineers, we make radiators".
Here's the link to the DeWitts C6 dual fan kit....
http://www.dewitts.com/pages/product...asp?ProdID=427
To say, "kit includes relays & wiring" leads me to assume it's a direct replacement to the OEM fan that will provide 40% air flow over stock.
Perhaps, but it doesn't mention the potential power draw problem. I WOULD NOT have purchased the C6 dual fan kit as an "upgrade" to my A05A radiator order if that information was disclosed up front. I hope DeWitts will provide a workable solution soon and as a minimum, edit the website listing.
work it out with you or John @ Dewitts, although the price you mentioned is better for me.
thanks
Melting Slicks
Joined: Nov 2005
Posts: 2,345
Likes: 2
From: Houston 06 C6 Ysi SC 402 fgd TX
......Good info guys, keep it coming. But, I feel that if DeWitts knows their C6 dual fan kit is not a "plug-n-play" for daily use/street application it should be mentioned in there website (John or Tom). DeWitts is a great supporting forum vendor and offers a quality product, however I'm disappointed in the response "We are NOT electrical engineers, we make radiators".
Here's the link to the DeWitts C6 dual fan kit....
http://www.dewitts.com/pages/product...asp?ProdID=427
To say, "kit includes relays & wiring" leads me to assume it's a direct replacement to the OEM fan that will provide 40% air flow over stock.
Perhaps, but it doesn't mention the potential power draw problem. I WOULD NOT have purchased the C6 dual fan kit as an "upgrade" to my A05A radiator order if that information was disclosed up front. I hope DeWitts will provide a workable solution soon and as a minimum, edit the website listing.
Burning Brakes
Joined: Jul 2006
Posts: 824
Likes: 3
From: Houston, Tx.....'05 Corvette M6 LS3 Magnuson Heartbeat
John,
Thank you for your email (off-line) which again shows DeWitts quality customer service and commitment to this forum. From the few vendors that do offer aluminum radiators, none have provided more technical support or group purchase offers (GP's) as much as DeWitts has provided to us here on the Corvette Forum.
**************************************** *************
Gent's,
To simply ask for a refund (if I could) and move on is missing the point. We're all just having a conversation and providing customer feedback. True, I should have called DeWitts to ask a few more question prior to my purchase (which listed here on the C6 Parts section - N.I.B), but I based my decision on the details shown in their website listing.
The solutions offered look "do-able", but until DeWitts comes up with an "approved" method for daily/street use, I don't want to take the risk of causing damage to the dual fans or my electrical system (i.e melt or possible fire).
My opinion is that if DeWitts was aware of this issues, it should have listed the dual fan kit "for track use only" until a workable solution is developed to get around the power and variable fan speed issues to prevent others from finding themselves in the same position in the future.
Thank you for your email (off-line) which again shows DeWitts quality customer service and commitment to this forum. From the few vendors that do offer aluminum radiators, none have provided more technical support or group purchase offers (GP's) as much as DeWitts has provided to us here on the Corvette Forum.
**************************************** *************
Gent's,
To simply ask for a refund (if I could) and move on is missing the point. We're all just having a conversation and providing customer feedback. True, I should have called DeWitts to ask a few more question prior to my purchase (which listed here on the C6 Parts section - N.I.B), but I based my decision on the details shown in their website listing.
The solutions offered look "do-able", but until DeWitts comes up with an "approved" method for daily/street use, I don't want to take the risk of causing damage to the dual fans or my electrical system (i.e melt or possible fire).
My opinion is that if DeWitts was aware of this issues, it should have listed the dual fan kit "for track use only" until a workable solution is developed to get around the power and variable fan speed issues to prevent others from finding themselves in the same position in the future.
Melting Slicks
Joined: Jul 2008
Posts: 2,014
Likes: 2
St. Jude Donor '09-'10
John,
Thank you for your email (off-line) which again shows DeWitts quality customer service and commitment to this forum. From the few vendors that do offer aluminum radiators, none have provided more technical support or group purchase offers (GP's) as much as DeWitts has provided to us here on the Corvette Forum.
**************************************** *************
Gent's,
To simply ask for a refund (if I could) and move on is missing the point. We're all just having a conversation and providing customer feedback. True, I should have called DeWitts to ask a few more question prior to my purchase (which listed here on the C6 Parts section - N.I.B), but I based my decision on the details shown in their website listing.
The solutions offered look "do-able", but until DeWitts comes up with an "approved" method for daily/street use, I don't want to take the risk of causing damage to the dual fans or my electrical system (i.e melt or possible fire).
My opinion is that if DeWitts was aware of this issues, it should have listed the dual fan kit "for track use only" until a workable solution is developed to get around the power and variable fan speed issues to prevent others from finding themselves in the same position in the future.
Thank you for your email (off-line) which again shows DeWitts quality customer service and commitment to this forum. From the few vendors that do offer aluminum radiators, none have provided more technical support or group purchase offers (GP's) as much as DeWitts has provided to us here on the Corvette Forum.
**************************************** *************
Gent's,
To simply ask for a refund (if I could) and move on is missing the point. We're all just having a conversation and providing customer feedback. True, I should have called DeWitts to ask a few more question prior to my purchase (which listed here on the C6 Parts section - N.I.B), but I based my decision on the details shown in their website listing.
The solutions offered look "do-able", but until DeWitts comes up with an "approved" method for daily/street use, I don't want to take the risk of causing damage to the dual fans or my electrical system (i.e melt or possible fire).
My opinion is that if DeWitts was aware of this issues, it should have listed the dual fan kit "for track use only" until a workable solution is developed to get around the power and variable fan speed issues to prevent others from finding themselves in the same position in the future.
Former Vendor
Joined: Jan 2000
Posts: 5,593
Likes: 631
From: Brighton
First of all, it seems we have two subjects going in one thread. Apparently there is a problem with the factory plug on the stock fan system melting or something, and that has nothing to do with a DeWitts fan package.
Second, I think it was clear that our fan upgrade is not a direct replacement. If it was, you would not need relays and wiring. The kit is complete, and if used as supplied, you do not need anything else. The relays are correctly sized to handle the current to these fans and we supply a temp switch to turn them on/off. The dual fans provide 2760 cfm, so I don't know where the above numbers come from.
The problem is the customer wants to use this a different way and control this with the factory wiring and ecm, which it is not designed to do. To make this clearer, John changed the listing text to read as :
"Spals dual fan package boosts air flow up 40% from stock. This fan package only fits our Direct Fit radiators. This kit includes the necessary relay harnesses and temperature switch to operate the fans automatically. Switch turns the fans on at 195 and off at 175. This is an aftermarket add-on, and it is not compatable with the factory wiring or control system."
I hope that eliminates any confusion in the future.
Melting Slicks
Joined: Jul 2008
Posts: 2,014
Likes: 2
St. Jude Donor '09-'10
Let me jump in here....
First of all, it seems we have two subjects going in one thread. Apparently there is a problem with the factory plug on the stock fan system melting or something, and that has nothing to do with a DeWitts fan package.
Second, I think it was clear that our fan upgrade is not a direct replacement. If it was, you would not need relays and wiring. The kit is complete, and if used as supplied, you do not need anything else. The relays are correctly sized to handle the current to these fans and we supply a temp switch to turn them on/off. The dual fans provide 2760 cfm, so I don't know where the above numbers come from.
The problem is the customer wants to use this a different way and control this with the factory wiring and ecm, which it is not designed to do. To make this clearer, John changed the listing text to read as :
"Spals dual fan package boosts air flow up 40% from stock. This fan package only fits our Direct Fit radiators. This kit includes the necessary relay harnesses and temperature switch to operate the fans automatically. Switch turns the fans on at 195 and off at 175. This is an aftermarket add-on, and it is not compatable with the factory wiring or control system."
I hope that eliminates any confusion in the future.
First of all, it seems we have two subjects going in one thread. Apparently there is a problem with the factory plug on the stock fan system melting or something, and that has nothing to do with a DeWitts fan package.
Second, I think it was clear that our fan upgrade is not a direct replacement. If it was, you would not need relays and wiring. The kit is complete, and if used as supplied, you do not need anything else. The relays are correctly sized to handle the current to these fans and we supply a temp switch to turn them on/off. The dual fans provide 2760 cfm, so I don't know where the above numbers come from.
The problem is the customer wants to use this a different way and control this with the factory wiring and ecm, which it is not designed to do. To make this clearer, John changed the listing text to read as :
"Spals dual fan package boosts air flow up 40% from stock. This fan package only fits our Direct Fit radiators. This kit includes the necessary relay harnesses and temperature switch to operate the fans automatically. Switch turns the fans on at 195 and off at 175. This is an aftermarket add-on, and it is not compatable with the factory wiring or control system."
I hope that eliminates any confusion in the future.
The prime problem is in fact the GM connector. The wiring of the dual SPAL fans does take some electrical savy that most mod shops have and can apply to this particular application.