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> cooling issues..., fine when driving, spikes when stopped.
malaga_red75
post Aug 6 2010, 05:52 PM
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'74 2.5L N/A Subie
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subaru JDM EJ25 DOHC

So, got my conversion finally road worthy and have noticed that while I am driving around, the car stays at around 200 F. when i stop, or let it idle in my garage... the temp slowly climbs and doesnt stop (i shut it off around 230 F). I am assuming this is an issue with my fans.

I am running a front mounted radiator, using 2 push-style fans. A few things that i think may be wrong...

-There is no shroud around the fans... just the shroud that seals the radiator to the front (since they are push fans, they are mounted on the front side of the radiator, in between the radiator and the nose of the car)

- there is about a 1 1/2" gap between the fans and the radiator (this was just the way that ended up working for mounting the fans)

anyways, i am pretty sure that the cooling system is working (no kinked lines, thermostat working, fans do turn on) as indicated by driving and the temp staying cool, there is just something not working when i stop moving. let me know what you guys think.

-Peter
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budman5201
post Aug 17 2010, 05:59 PM
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SWEET! cool, anxious to see now where your temps stay at during idle and cruising around with both your fans working and that radiator. I bet your fine!

Once you are positive the system works perfect ( a few weeks worth), the thermostat with the holes isnt really needed. Mine is Stock Aftermarket with no holes in AZ. After 3 Subaru stock ones sticking during my various engine swaps, only cheap Autozone ones for me.


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malaga_red75   cooling issues...   Aug 6 2010, 05:52 PM
BarberDave   :trophy: 1st. Are you useing the same size rad...   Aug 6 2010, 06:43 PM
kg6dxn   First, you should pull the air not push. Second, i...   Aug 6 2010, 07:03 PM
ArtechnikA   First, you should pull the air not push. Referen...   Aug 6 2010, 08:07 PM
kg6dxn   First, you should pull the air not push. Refere...   Aug 6 2010, 11:05 PM
ArtechnikA   Reference, please - 'cause everybody else in...   Aug 7 2010, 06:18 AM
malaga_red75   Dave, I do have a shroud that feeds all the air...   Aug 6 2010, 08:00 PM
kg6dxn   Fluid dynamics is different. Pushing or pulling fl...   Aug 7 2010, 07:10 AM
ArtechnikA   published reference...   Aug 7 2010, 07:17 AM
DBCooper   published reference... That's hard to do be...   Aug 7 2010, 08:58 AM
kg6dxn   published reference... I'm not sure what yo...   Aug 10 2010, 10:57 PM
RobW   Impressive technical knowledge... I want to drink ...   Aug 7 2010, 07:20 AM
kg6dxn   Impressive technical knowledge... I want to drink...   Aug 7 2010, 07:56 AM
malaga_red75   So, I re-did the cooling system, bringing the fans...   Aug 10 2010, 10:37 PM
kg6dxn   So, I re-did the cooling system, bringing the fan...   Aug 10 2010, 11:00 PM
malaga_red75   Looking at your picture, You may also want to c...   Aug 10 2010, 11:39 PM
kg6dxn   Looking at your picture, You may also want to ...   Aug 11 2010, 07:45 AM
kg6dxn   I use a vacuum pump from harbor freight $70 a...   Aug 10 2010, 10:53 PM
malaga_red75   ok, i will make my holes bigger then take some mea...   Aug 11 2010, 12:28 PM
malaga_red75   So, yesterday I tried getting all the air out of t...   Aug 12 2010, 10:12 AM
kg6dxn   So, yesterday I tried getting all the air out of ...   Aug 12 2010, 11:36 AM
Phoenix-MN   So, yesterday I tried getting all the air out of...   Aug 12 2010, 12:26 PM
malaga_red75   [quote name='kg6dxn' post='1355505' date='Aug 12 ...   Aug 12 2010, 01:35 PM
malaga_red75   and mine will and does begin to overheat at idle i...   Aug 12 2010, 01:36 PM
charliew   You must not be moving enough coolant if you need ...   Aug 12 2010, 05:20 PM
malaga_red75   You must not be moving enough coolant if you need...   Aug 13 2010, 12:27 PM
ArtechnikA   Will a bad headgasket cause it to overheat at idl...   Aug 13 2010, 03:15 PM
realred914   You could try the the Bong method to get the air ...   Aug 13 2010, 11:22 PM
budman5201   I had the exact same problem in 2 of my sub conver...   Aug 14 2010, 11:19 AM
malaga_red75   I had the exact same problem in 2 of my sub conve...   Aug 14 2010, 12:02 PM
malaga_red75   well, new thermostat installed. no change... well...   Aug 14 2010, 03:25 PM
kg6dxn   well, new thermostat installed. no change... wel...   Aug 14 2010, 04:08 PM
budman5201   one question, how many return lines do you have th...   Aug 14 2010, 04:56 PM
budman5201   the basic design of the water pump housing on a su...   Aug 14 2010, 05:06 PM
malaga_red75   budman- First, when i did the tstat test, the new...   Aug 14 2010, 08:35 PM
budman5201   budman- First, when i did the tstat test, the ne...   Aug 15 2010, 12:56 PM
malaga_red75   budman- First, when i did the tstat test, the n...   Aug 15 2010, 03:42 PM
drive-ability   IMO a blown head gasket would be much worse under ...   Aug 14 2010, 09:44 PM
malaga_red75   IMO a blown head gasket would be much worse under...   Aug 14 2010, 09:49 PM
budman5201   here is a stolen pic from STI progress thread. sho...   Aug 15 2010, 01:31 PM
malaga_red75   well, I think (fingers crossed) that the cooling s...   Aug 16 2010, 07:37 PM
kg6dxn   Awesome! :Qarl: Now put that thing back togeth...   Aug 16 2010, 07:45 PM
budman5201   SWEET! cool, anxious to see now where your tem...   Aug 17 2010, 05:59 PM
malaga_red75   so, as the ultimate test for my cooling system, I ...   Aug 19 2010, 11:41 AM
kg6dxn   so, as the ultimate test for my cooling system, I...   Aug 19 2010, 11:45 AM
budman5201   SWEET! :headbanger: :driving: :DRUNK:   Aug 19 2010, 06:18 PM
charliew   I guess you also don't have the oil filter coo...   Aug 20 2010, 11:30 AM
ArtechnikA   I guess you also don't have the oil filter co...   Aug 20 2010, 12:22 PM


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