Two of everything is a new approach. You aren't gonna run dual rear wheels, are you?
Auxiliary cooler.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Auxiliary cooler.
Being that I have a 405 topped with LT1 EFI I'm a little worried I may have to deal with overheating issues, as it seems these motors are prone to running hot when modified.
I do not use the heater core in my car and I was thinking of using the two rear manifold heater hose nipples for an auxiliary cooler instead of the heater core.
I was thinking I would mount it somewhere up front or even under the driver side fender where the vapor canister used to be. I would install a small auxiliary fan with it's own fluid temp probe and let it run automatically.
I'm guessing it would help a lot with fluid temp, basically having two radiators, but am wondering if it will be all that effective. Because those two tubes would normally go through the heater core it should ave plenty of flow and pressure.
Any thoughts?
I do not use the heater core in my car and I was thinking of using the two rear manifold heater hose nipples for an auxiliary cooler instead of the heater core.
I was thinking I would mount it somewhere up front or even under the driver side fender where the vapor canister used to be. I would install a small auxiliary fan with it's own fluid temp probe and let it run automatically.
I'm guessing it would help a lot with fluid temp, basically having two radiators, but am wondering if it will be all that effective. Because those two tubes would normally go through the heater core it should ave plenty of flow and pressure.
Any thoughts?
Burning Brakes
Joined: Feb 2006
Posts: 1,173
Likes: 5
From: Paducah Ky
Get a DeWitt radiator with the dual fan setup and you should have plenty of cooling.I have this with a 160 thermostat to help the car warm up quicker and then let the fan controller control the temp. I can run my 408 hard or idle forever in this 100 degree temp without any issues. My temps never get over 180.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Get a DeWitt radiator with the dual fan setup and you should have plenty of cooling.I have this with a 160 thermostat to help the car warm up quicker and then let the fan controller control the temp. I can run my 408 hard or idle forever in this 100 degree temp without any issues. My temps never get over 180.
I have a new DeWitt radiator and while I am running a mechanical right now I have a MarkVIII fan and a DCC controller ready to go.
I do not know for sure it will have a heating problem since the 405 is not installed yet but I want to prepare. I have this really bad feeling I will go through all the trouble of the install and covering all the bases and then come to find out it overheats and I need some extra cooling.
I would rather install it while I have the engine out than **** with installing it after everything is done and buttoned up.
Instructor
Joined: Jul 2007
Posts: 152
Likes: 0
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
If I want a good mocking for my ideas I'll look into a membership at the other forum.
Maybe I'll take off one of my side pipes.
Maybe I'll remove one of the head light assemblies.
Maybe I'll only run speakers on one side of the car.
One seat?
One seatbelt?
One valve cover?
Ooh I know...one cylinder head.
The car is so full of useful pairs of things what's the harm in a few more huh?
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Instructor
Joined: Jul 2007
Posts: 152
Likes: 0
Maybe I'll take off one of my side pipes.
Maybe I'll remove one of the head light assemblies.
Maybe I'll only run speakers on one side of the car.
One seat?
One seatbelt?
One valve cover?
Ooh I know...one cylinder head.
The car is so full of useful pairs of things what's the harm in a few more huh?
I am just trying to understand, 1 is good, 2 is better. Redundency is fine. Nascar runs dual ignition boxes.
I guess it boils down to what you are trying to accomplish/design/build? That is my main question.
I am not trying to mock you, just understand. If you don't have a sense of humor, then I will refrain from posting to you. Fair enough?
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
That would describe a motorcycle. Not my point.
I am just trying to understand, 1 is good, 2 is better. Redundency is fine. Nascar runs dual ignition boxes.
I guess it boils down to what you are trying to accomplish/design/build? That is my main question.
I am not trying to mock you, just understand. If you don't have a sense of humor, then I will refrain from posting to you. Fair enough?
I am just trying to understand, 1 is good, 2 is better. Redundency is fine. Nascar runs dual ignition boxes.
I guess it boils down to what you are trying to accomplish/design/build? That is my main question.
I am not trying to mock you, just understand. If you don't have a sense of humor, then I will refrain from posting to you. Fair enough?
I'm sorry but can you see how this seems like a poke in the ribs and off topic? Sure it's funny a few times and I usually roll with it but when you are the only mock material a different forum uses to stay busy then it gets old fast.
I'm surprised I don't have my own section there, and yes it bleeds over here and disrupts what this forum is all about.
Jokes are fine and maybe I took that one too personal but I'm sure you can see how it's seen in the wrong light.
What I'm trying to accomplish is a fun car that I myself have had a hand in designing. I want everything to work the way I design it or better and if I see a change from the norm to accomplish my goal then I'm going for it.
In this case it's more a safety precaution. I'm expecting, based on suspicions and suggestions, that my 405 might overheat. I will already have the cooling system in place and tailored for optimal efficiency but it may not be enough and I would like to be prepared.
If this means a second, auxiliary radiator of sorts then that's what I'll install.
Does that make sense?
Instructor
Joined: Jul 2007
Posts: 152
Likes: 0
I'm sorry but can you see how this seems like a poke in the ribs and off topic? Sure it's funny a few times and I usually roll with it but when you are the only mock material a different forum uses to stay busy then it gets old fast.
I'm surprised I don't have my own section there, and yes it bleeds over here and disrupts what this forum is all about.
Jokes are fine and maybe I took that one too personal but I'm sure you can see how it's seen in the wrong light.
What I'm trying to accomplish is a fun car that I myself have had a hand in designing. I want everything to work the way I design it or better and if I see a change from the norm to accomplish my goal then I'm going for it.
In this case it's more a safety precaution. I'm expecting, based on suspicions and suggestions, that my 405 might overheat. I will already have the cooling system in place and tailored for optimal efficiency but it may not be enough and I would like to be prepared.
If this means a second, auxiliary radiator of sorts then that's what I'll install.
Does that make sense?
I'm surprised I don't have my own section there, and yes it bleeds over here and disrupts what this forum is all about.
Jokes are fine and maybe I took that one too personal but I'm sure you can see how it's seen in the wrong light.
What I'm trying to accomplish is a fun car that I myself have had a hand in designing. I want everything to work the way I design it or better and if I see a change from the norm to accomplish my goal then I'm going for it.
In this case it's more a safety precaution. I'm expecting, based on suspicions and suggestions, that my 405 might overheat. I will already have the cooling system in place and tailored for optimal efficiency but it may not be enough and I would like to be prepared.
If this means a second, auxiliary radiator of sorts then that's what I'll install.
Does that make sense?
I also feel a larger, single radiator is going to do more for you than an auxilary unit.
Le Mans Master
Joined: Nov 2004
Posts: 6,128
Likes: 21
From: North Alabama
heh...don't flatter yourself 
........................................ ...................................jk
Last edited by Jclgodale3; Aug 10, 2007 at 04:56 PM.
Racer
Joined: Jul 2007
Posts: 311
Likes: 0
From: Visalia CA
back on subject, it might be cool to do if you don't want a heater and want something different. It also might be cheaper then a new single aluminum radiator. but i think it's a wash as far as cooling cabability goes. I think your better off spending extra money on a good aluminum radiator and saving weight on the front end of your car. You've already got a huge motor up there, do you really want to add another cooler plus the associated plumbing? Plus you would have to explain it to every single person that stopped to look at your car at a show, that would get old real quick 
. If you do decide to do it, let us know how it works out. I'd be interested to see if it helps.
. If you do decide to do it, let us know how it works out. I'd be interested to see if it helps.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Melting Slicks
Joined: Feb 2006
Posts: 3,428
Likes: 5
From: Japan
DB, just my .02......from the experience stated by others it sounds like you've got plenty of cooling in place already, and you sound smart enough to know that using a relocated heater core as an auxiliary cooling unit is somewhat inelegant and slightly Rube-Goldbergy. Just make sure that all the air leaks around the core support are plugged as they should be and you've got a good air dam up front and everything should be fine.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
I've seen a few people misunderstand this, I'm not using the old heater core as the auxiliary cooler. I simply took the heater core out of the loop.
I was thinking of mounting a small, maybe 10" x 10" cooler and running a small electric fan over it to act as a secondary cooling method.
The stock heater core is staying in the dash with no other purpose than to wait for the chance that I ever hook it back up.
I was thinking of mounting a small, maybe 10" x 10" cooler and running a small electric fan over it to act as a secondary cooling method.
The stock heater core is staying in the dash with no other purpose than to wait for the chance that I ever hook it back up.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
DB have you considered your remote in the back of the car?You could run the tubes through the frame.Back the drivers side and up the pass side-a complete loop.This would add to the volumn and if using tubing instead of hose heat would be transmitted into the frame rails and spread out.The rad in the back would remove some of the underhood heat as well.I bet with the extra volumn you would not need to run a fan-less drain on alternator.Or how about the tubing that has fins on it with no rad. and just a full loop?
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
DB have you considered your remote in the back of the car?You could run the tubes through the frame.Back the drivers side and up the pass side-a complete loop.This would add to the volumn and if using tubing instead of hose heat would be transmitted into the frame rails and spread out.The rad in the back would remove some of the underhood heat as well.I bet with the extra volumn you would not need to run a fan-less drain on alternator.Or how about the tubing that has fins on it with no rad. and just a full loop?
I see what you're saying. Kind of like what Porsche does with their engine oil cooler in the front, and tubing running the length of the car up to the front and back to the engine.
That is an okay idea but a little more plumbing and relocating than I was looking for. Mounting a cooler under the driver side fender where the vapor canister would be easy to do and the tubing would be negligible.
Very interesting thinking though...very outside the box.
Cruising
Joined: Aug 2007
Posts: 13
Likes: 0
Wouldn't it just be simpler to remove the heater duct from inside the car.
Build a sealed box with a fan to blow onto the heater core (as this is still in situ) into the engine bay.
The noise from the side pipes and stereo would more than drown any noise from the fan.
Build a sealed box with a fan to blow onto the heater core (as this is still in situ) into the engine bay.
The noise from the side pipes and stereo would more than drown any noise from the fan.