|10-02-2012 02:25 PM|
So, ForceFed, are you now using a combination of one 12 inch and one 16 inch fan? Did you ever add a shroud, or did the larger fan (plus oil cooler) do the trick alone?
Thanks for the update.
|10-02-2012 02:20 PM|
|10-02-2012 01:26 PM|
|ForceFed86||Just to update this. Installed a decent oil cooler and a spal 16" fan on one side. The single 12" fan is good for most of the year here. Once temps get into the 90+ range I have a switch for the spal 16". Cools fin now, even in 110* heat.|
|04-27-2012 11:41 PM|
Great ideas, I'll try the oil cooler first. I Honestly don't have room for even a cookie sheet at the moment. I may be able to get creative and trim the fans down a bit and re-arrange some piping. Or squeeze a 16inch fan offset to one side with the shroud. I'll follow up with the results.
|04-27-2012 08:00 PM|
Bogie's got it right , without a shroud your fans are very inefficent. The cookie sheet thing w/ the fans mounted internally would work well , trim the shroud's as much as you can , then like he said , put in high speed flaps if needed...
|04-27-2012 05:41 PM|
I see you're really pressed for space, if you don't have an engine oil cooler, you should find that a large enough one will take about 10 maybe 15 degrees off the coolant temp. All you've got to do is find a place for it.
Without a shroud it's hard to get fans to pull over all the possible radiator core area. Another trick is to use cookie baking sheets to make a shallow shroud that fastens around the perimeter of the core and accepts the fans with either their shrouds modified either by cutting or bending for the depth of the cookie sheets. The internal angles are for crap but it actually works pretty well. Sometimes it does interfere with high speed cooling, the solution is some flapper doors outside the fan radius in the cookie sheet these will be sucked shut when the fans run so a vacuum forms across the entire core to pull air through it at idle and stop and go traffic but at cruise and higher speeds when the fans aren't required the ram air will blow the flapper doors open to provide more flow area with less restriction. This type shroud can be configured so it adds no more depth than your existing fans which will get around your space problem. Plus, if you use your wife's old baking sheets you'll love the smell of chocolate chips as your moving down the highway---GOT MILK?
|04-27-2012 01:31 PM|
Thanks for the reply. Although it may not look like it, the fans pictured are touching the radiator. There is no space between. The turbo is less than an inch from the fans currently. It already started to slightly melt the plastic on the rear of the fans. So unless I can find a "slimmer" fan I think I'm hosed there. The AC condenser and intercooler mount directly in front of the radiator so I have no wiggle room there either.
I can get a 3-row champion radiator for 170 shipped. (14-16 fins per inch) Suppose it won't break the bank to give it a try. My current radiaotr did not list the fins per inch for a comparison. I'll have to count them tonight. Thanks for pointing it out.
|04-27-2012 09:31 AM|
If you have room to run the electric fans shown, then you have room for a shroud.
How are your fans controlled? Do you have them turn on with a thermostatically controlled switch? If you do, change that so they run constant whenever the ignition is on. You might also consider running a high volume larger single puller fan.
|04-26-2012 06:55 PM|
2 row vs 3 row Radiator efficiently?
Recently bought a 2 row 28x15x2 cheapo alum radiator. Anyone have direct experience with replacing a 2-row radiator of the exact same size with a 3-row?
I'm using 2 12" electric fans. This has cooled the car fine up until I use the AC in stop and go traffic on hot days. Without the AC on the car will stay around 190-210* (180 thermo). Even on 100*+ days I've seen a highest reading of 210 or so. On the highway I can run the AC on hot days without any overheating issues.
Due to engine packaging and turbo plumbing, I have no room for a schroud. The radiator is covered decently by 2 12" fans. I know a schroud is best, but I just don't have the room.
Do you think switching to a 3 row core radiator will make that much of a difference? The 3 core units I'm looking at are the same 2" thickness as my current 2 core. I just can't see them cooling that much better?
I'm also looking into a more powerful fan setup. As these are the supplied cheap fans.