150 auto transmission oil cooler install - Davies Craig 678 with fan and thermo switch

[fido666 Banned Find all posts View Profile Close fido666]

Torque is the key. The D4D punches out over 400Nm so the V8 cooler is a good match.

The V6 has 381Nm so how much difference does that make?

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

Peak torque is at lower engine speed and for a range of revs, not just a peak number at 3,500 rpm or so.

[fido666 Banned Find all posts View Profile Close fido666]

Ok, so what does that mean? Should I get the 678 or the 677?

[Heath74 Senior Member Find all posts View Profile Close Heath74]

I thought the petrols cam with a cooler standard?

[Tin175 Senior Member Find all posts View Profile Close Tin175]

Me too. How is the production schedule?

I'll have a few 120 brackets next week.

[fido666 Banned Find all posts View Profile Close fido666]

I thought the petrols cam with a cooler standard?

If they do I don't know where it's hiding.

[YMUS Find all posts View Profile Close YMUS]

Tin - mate put me down for one if they are still available - appreciate the opportunity
regards
larry d
ymus

[Heath74 Senior Member Find all posts View Profile Close Heath74]

If they do I don't know where it's hiding.

On the 120, it's in front of the radiator I am told.

[fido666 Banned Find all posts View Profile Close fido666]

On the 120, it's in front of the radiator I am told.

I'll have a look tomorrow, I can't recall seeing anything there on the 150 V6 I have.

[Tin175 Senior Member Find all posts View Profile Close Tin175]

V6 Oil cooler

The V6 should have cooler already.

This is a picture I found of a 2010 150 V6 Prado. Cooler is just under the horns.

[fido666 Banned Find all posts View Profile Close fido666]

This is a picture I found of a 2010 150 V6 Prado. Cooler is just under the horns.

Found an old pic from when I was messing about with the winch, looks like I do have one after all.



Mine is a 2009 150 V6 Kakadu.

I wonder why the V6 got one and the diesel didn't?

[Heath74 Senior Member Find all posts View Profile Close Heath74]

the V6 doesn't make the torque that the D4D does, and as such the transmission in the V6 is more likely to over heat.

[Wil Senior Member Find all posts View Profile Close Wil]

The factory system seems to have a heat exchanger for the trans oil that sits inside the radiator, which leads a simple man to think that the oil needs to be at engine temp to work to design.

So an additional cooler before the exchanger in the radiator is pointless as the radiator may end up heating the trans oil.

A cooler after the exchanger in the radiator will be cooling the trans oil below design temp?

I remain somewhat confused

[Wil Senior Member Find all posts View Profile Close Wil]

Xx

[Davad73 Junior Member Find all posts View Profile Close Davad73]

I installed the 678 2 weeks ago and very impressed with the brackets and overall performance of the cooler. I have a scangauge so monitor trans temps all the time. Prior to the cooler I have seen the trans temp reach 102degC on a 12 degC day while going up the freeway out of adelaide. The other day it only reached 89degC and ambient was 38C. Once up over the hill the temp dropped down to 76c within a Minute or so. General driving around town the temp is only in the mid 60's on warm days and usually around 80. Overall I'd say 15-20c reduction. Extremely happy and Well worth it.

Picked up my cooler for $120 in adelaide from outlaw speed shop.

Thanks Tin175 for the brackets.