Dauntless 225 and electric fan

Any of you guys install an aftermarket electric fan on your 225v6 or for that matter any engine in your jeep that did not originally come with one? My rad is not original, is too big, sits where it only gets half the fan blades and i want to clean this up a bit. It does keep it cool under any and all circumstances though.

Specifically I am looking to understand what temp switch and relays you guys used and where you plumbed it in.

Thanks,
Chris

 

Hayden temp relay, it works well. Kicks on when it should at 180 and keeps the temp in check. Stick the probe into the cooling fins and wire the thing up.

I just have complaints about the fan I use, which is a issue of having removable mounts.

Upgrade your alternator 35 amps isn't enough with MSD, pertronixs, fan etc

 

I have an electric fan setup as a "pusher" fan in front of the radiator. I have a thermal switch that threads into the intake manifold on my 231. It is just like an electronic sender for a temp gauge, kicks the fan on at 185.

 

Pusher type fan in front of the radiator and stock mechanical fan . The rad is an actual V6 one I put in, had to modify the battery tray to get it in. The fan control is a capilary type. The bulb part is zip tied to the radiator core and there is an adjustment knob on the control unit, well, there used to be a knob, it fell off somewhere on a trail so there is just the shaft now. It's wired through a switch so I can turn it off at the top of a trail and not draw the battery down too much. I think it was Patrick that had his wired so it was off, auto or could be turned on from the dash.

 

How did you plumb that in AND the temp sender for the dash gauge?

I believe i have a remy 61 amp alternator. i should be ok. You are happy with the fin type thermocouple? I have never seen one like that and have only worked with ones that have a sender in the cooling system somewhere. I would assume it would work fine and relieve me of having to figure out the temp gauge sender/ switch for relay to fan.

I would feel better having the switch for the fan kick on/off in the cooling system on the engine though.

 

Here's my electric fan and home made shroud. I got the biggest diameter fan that would fit the factory V6 radiator. After having some cooling issues and reading about the through the radiator mounting tabs causing problems for some folks, I made my own shroud that also serves as the mount for the fan.




Just below the plug wires (I know, the red has to go) on the right side of the engine you can see where the temp activated switch plugs into the the 231s' intake. I eventually un hooked the switch and just wired the fan to a toggle switch on the dash for a strictly manual control. I should add a dummy light at the switch. The old temp switch was a like a 195* unit, which I thought was too hot. I never got around to getting or finding a lower rated switch. I'd like one that kicks the fan on around 160. I would still leave the toggle switch so I could turn the fan off for water crossings. his engine always ran hotter than I thought it should and comes to operating temp quickly.

 

My 231 even fire has 2 ports on the manifold for coolant. I have seen "T's" though that allow for multiple attachments.

 

That shroud does NOT look home made. Its really nice. I used to have a car where the temp switch was dead and I wired in a dash switch. I won't do that again. I did not always pay enough attention.

So I could then conceivably have a temp sender for gauge and a temp sender for the relay to close contacts.Could maybe plumb in a T in between the water pump hose to the intake? I would really like one switch to do both. Is that available? I see lots of aftermarket stuff but nothing specific to this application. maybe I am just being lazy and need to search more.

 

Temp sender for the gauge is a varying resistance type and won't work as a relay controller.

 

Chris, Check out the Hayden site. Has everything you need with good instructions. I use a Hayden fan controlled with my ECM and it works great.

http://www.haydenauto.com/ROOT-Home/Content.aspx

 

I have been looking at summit and jets, speedway.. It seems there are a lot of the thermocouple designs that use a probe in the rad fins. I am reticent to use that, but if anyone else has had success I might go for it. I would much rather use the screw in design like this http://www.summitracing.com/parts/spu-ix-185fh/overview/

seems that then I need to find another spot to screw in a temp sender

 

I agree, I'm sure the sensor in the fins works well, but I also wanted the type like you listed here. I found this, granted one of the outputs is for a hose but this is what I was referring to.

When I bought my fan I swear that I remember seeing a T specific for the fan switch, but have been searching and searching and can't find it. Maybe I was imagining things... But I have seen a few people while searching who have gotten brass T's from the hardware store for the same issue.

Also so if your going to go with a pusher fan, I bought a 16" and it required a lot of love to get it in front of the radiator, a 14" would have been much better in hindsight.

 

thats nice. i guess I will just need to make some plumbing and make it happen. i do also have a threaded bund in my rad tank, but i think its 1/4 inch NPT, so I might be able to make it work with some adapters.

Thanks for all the good info guys!

 

Here is another option that uses a single temperature probe, controls fan and operates with an electric or mechanical temperature gauge.

~http://centechwire.com/Electronic-Fan-Control-FC-2P.htm

 

Adjustable from your drivers seat. looks like a better idea than a dash switch too.

 

An odd fire 231 intake with the extra hole into the coolant system should bolt on to the 225. Just a thought. Might be cleaner in appearance in the end.

 

Is there a good off the shelf option for the 17” radiator?

Looked at flex a lite and nothing jumped out

 

Look very carefully at the cfm rating before buying. Many have very low flow rates.

 

Figure 3000 min

Don’t really have an option in my application. Need to go electric... would much rather have a mechanical.

 

following. Please do all the mental work for me. Parts list, detailed dwgs, pictures etc would be nice. I've twice compiled a list in summits " wish list" then dumped it. I don't hear good things about the fin type probes. Also there has to be a more $$ economical approach than several hundred dollars of bits.