SimonB Posted April 29, 2009 Share Posted April 29, 2009 I have now removed the little stock oil cooler the filter normally attaches to when I rebuilt my engine - I figured the external oil cooler I already had would do the job fine on its own. However, what I didn't think of is when trundling through traffic there is of course no airflow through the oil cooler, resulting in high oil temps. So I figure there are two solutions to this, either fit a larger air/oil cooler with some sort of thermostatic electric fan to pull air through, or bin it and use a laminova cooler, which is basically a oil/water heat exchanger. You hook it into the coolant circuit and it uses that to cool the oil. Anyone have any experience with them? Do you plumb them into the rad top hose or bottom hose? I guess the top hose would mean the coolant going through would be hotter and it wouldn't cool the oil as effectively, but the bottom hose would mean heating the coolant up before passing it through the block to cool the engine. Does it actually matter? Quote Link to comment Share on other sites More sharing options...
Digsy Posted April 29, 2009 Share Posted April 29, 2009 I thought the stock oil cooler already was an oil/water exchanger? Quote Link to comment Share on other sites More sharing options...
Ark Posted April 29, 2009 Share Posted April 29, 2009 Couldn't you T-off a feed from near the water pump and return it near the radiator top pipe? That would prevent the heat being passed back to the block. If you stick a pull-fan on the back of the oil cooler, it'll become a hindrance once you are motoring. Quote Link to comment Share on other sites More sharing options...
SUPRASUZUKI Posted April 29, 2009 Share Posted April 29, 2009 I thought the stock oil cooler already was an oil/water exchanger? It is. Interesting to hear you've got high temps with it removed Simon. Either put it back on or, as you say, put a fan on the back of the oil cooler. How hot is the oil getting? Quote Link to comment Share on other sites More sharing options...
SimonB Posted April 29, 2009 Author Share Posted April 29, 2009 It is. Interesting to hear you've got high temps with it removed Simon. Either put it back on or, as you say, put a fan on the back of the oil cooler. How hot is the oil getting? Not keen on putting it back, apart from the fact it would be a real pain to do with the engine in I no longer have a coolant pipe going round that side of the block so I'd have to put that back too. I need to make sure the sensor is actually reading correctly, but it was reading up to 110C just from being sat in slow moving traffic for a while - the sensor is where the rear turbo oil feed normally is. I think you may be able to fit a laminova cooler in place of the top rad hose. I'm going to measure up and see in a bit. The cooler could be ducted better too - I'm changing the front bumper so I'm not going to do that just yet. Still won't help when you're not moving though. Hmmm... Quote Link to comment Share on other sites More sharing options...
paul mac Posted April 29, 2009 Share Posted April 29, 2009 i think i would try and match the new cooler hoses to as close to stock as possible this way you remove all the doubt and its just like a bigger version of the stock cooler, the connection coming out of the block would be easy enough but i presume you have ditched the stainless tube thingy on the other side, i would have a look at a drawing of the coolant circuit (if you can find one ) Quote Link to comment Share on other sites More sharing options...
SUPRASUZUKI Posted April 30, 2009 Share Posted April 30, 2009 110's not too hot, but obviously could get out of hand in traffic after a spirited drive (specially in the summer). I'd go for a bigger cooler with a thermo controlled fan on the back personally. How big's your current cooler? Just out of interest, what size are the ports on the cooler (not really pertinent to temp, just interested.) Quote Link to comment Share on other sites More sharing options...
SimonB Posted April 30, 2009 Author Share Posted April 30, 2009 110's not too hot, but obviously could get out of hand in traffic after a spirited drive (specially in the summer). I'd go for a bigger cooler with a thermo controlled fan on the back personally. How big's your current cooler? Just out of interest, what size are the ports on the cooler (not really pertinent to temp, just interested.) -10 on the cooler, it's a 19 row x 235mm I think. I think I'm going to remount it slightly so it's more in the airflow, and stick a fan on as an experiment and see what happens. If it works out OK I'll probably switch it for a slightly bigger one (I was probably going to do that anyway) and add a thermostatic controller etc. Quote Link to comment Share on other sites More sharing options...
Wez Posted April 30, 2009 Share Posted April 30, 2009 Interesting. Quote Link to comment Share on other sites More sharing options...
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