Oil cooler questions

**finney** · 18-10-2006, 01:25 PM

I purchased my oil cooler online through summitracing in the states after GT recommended them to me, reasonably priced compared to what places were asking locally, if you are in no rush to get one then go through them as express postage gets expensive.

http://www.summitracing.com/

**Ribfeast** · 18-10-2006, 03:20 PM

I have a Serck oil cooler here you can buy if you are interested. E-mail [email protected] for pics if u like.

**adamaw11** · 18-10-2006, 03:55 PM

Originally Posted by thechuckster

note: 7mge, 1gue, (others?) etc have low-flow oil-coolers - they bleed off oil, cool it then dump it to the sump - these dont count as full-flow coolers.

phew, I think that lets me off the hook. I'm using an auto-trans cooler, and I've got it basically at the same point the factory 4age cooler was: coming from a sandwich plate under the oil filter, and dumping back to the sump

**thechuckster** · 18-10-2006, 04:07 PM

adam - does the stock sandwich plate simply bleed over-pressure thru the cooler? interesting... i've only seen the M-series block which has a port on the right side of hte block and the return is piped directly into the sump.

**adamaw11** · 18-10-2006, 05:26 PM

not sure about the bleeding of over-pressure, I just know that the 16v 4age in aw11s and some twincam corollas had a sandwich plate under the filter, and a feed directly into the side of the sump.

**kingmick** · 18-10-2006, 05:59 PM

Tranny cooler will do the job fine! For example we use alloy tubes in the Radiator end tank but before that we used the same PWR oil cooler that sat in the radiator end tank. Mate you could use a peice of alloy pipe exposed to the frontal air an it would work ok!
It all depends on how much cooling the oil needs and unless you have an oil temp gauge you are just having a guess!
Even a power steering cooler or fuel cooler will work if suits the cooling your oil needs.
Why would anyone buy a cooler from overseas when they can get a good one here for a good price, if you shop around.
I use a rx7 oil coller for my 4ag and will make an electric slide for it to block it off when not needed, but if you have a big oil cooler you can last a bit longer when you have water cooling problems etc which can happen on the road and the track!!!!!
Besides the fact it can give you another couple of litres of oil in the system!
99% of real racers use a non thermo system, because it is another thing that can fail! You can use what ever you like, i would go with what racers use!
Even a standard 4ag oil coiler will knock temp of the oil

ed · 18-10-2006, 10:32 PM

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You must spread some Reputation around before giving it to kingmick again.

**cambelt** · 18-10-2006, 11:12 PM

the bypass oil cooler systems work great like off the 7m and 4 ag for just the extra bit of cooling without going to a full flow system, ive put the toyota ones on many diff engines before ,
ive just made up the adapter to put the 4M fitting on a 2 JZ
Dave

**YelloRolla** · 18-10-2006, 11:15 PM

I don't use one on the 3T GTE! I did before, and I used a generic trans cooler. The 3T sandwich plate (I don't much like that term, but now is not the time) has a thermo in it that by passes an amount of oil through the cooler, which has prolly already been pointed out elsewhere in this thread. The cooler was simply a run of aluminium pipe bent back and forth with some fins joining it. Looking at the thickness of the pipe vs its internal area meant that it was going to need sh*t loads of pressure before it gave up.

My reasons or not using a cooler (as such) are
1) it is not a circuit race car, so does not cop the relentless WOT treatment (7 secs sees the car at 160km/h, try that on the street)
2) I have increased the sumps capacity by 900mL and I have increased the sumps surface area by nearer 75% -now an effective cooler on its own.
3) Turbo is water cooled and of the roller bearing type which needs lots of water and little oil - the restrictor in the oil line is 0.8mm in dia. An oil cooled turbo needs lots of oil pumped through it.
4) The engine rarely sees the high side of 2000km before an oil change (insert your favourite synthetic brand here). Used to be 4000K when commuting from Gosford to Sydney every day, but that was a decision of financial viability.

Like Mick has pointed out, with a dedicated, full flow oil cooler on the street, it needs to be by-passed, your oil will simply not reach optimum temp.

edit - I hate my keyboard.