2L-TE overheating. How far to go?

[markhc]

Pros and cons with replacing the stock flex pipe? Should I re-do the flex pipe just for the sake of having a new piece of it in there? How much labour will this add on?

I'm assuming I should just run the new pipe straight back and out the drivers side instead of crossing over like the stock muffler?

I am probably going with a 2.5" diameter as your suggestions and a Magnaflow muffler. Does anybody have a recommendation besides the Magnaflow?

 

[priffe]

Howdy
just FYI

just returned from a trip from Sweden to Africa with a Hilux Surf 2L-TE 2.4TD
drove 11000 kms
light load
but on gravel and loose sand dunes
in 40+ degrees (that would be 104F+)
truck never ever overheated
or even moved the meter over half
auxiliary electric fan kicked in occasionally
didn't use the AC (it had a leak)
no trailer
tires 31"

Left behind a LJ78 in France
with overheating issues
will give it a new head before I try it
we're experimenting with various Toyotas
going 'Safari'
next trip will be BJ73/LJ78/HDJ80
two of the three

The LJ doesn't have aux electric fan - we will fit one
also the Hilux had the AC condensor mounted below the radiator at a 45 angle
so it is better cooled than the LJ
Hilux could do it
I am pretty sure the LJ can, too

 

[wobbly]

I reckon a supplementary oil cooler would help when towing with my LJ78....but does the LJ have the same system of oil being pumped to the bottom of the rad for gearbox oil cooling?
Fluidyne dont make the 10023 anymore, the smallest finned cooler is the 10029 which has more fins - I think maybe 30% more - would this increase be a problem in the UK, where our temp range is generally from -3 to about 26 deg.
Cheers
Pete

 

[crushers]

the fluid is cooled before it hits the rad, the rad warms it up in cold weather.

no issue.

 

[wobbly]

Hi Crushers

How is the fluid cooled before it gets to the rad - by the heat diispating as it travels to the rad along the pipework?

I had a look for an outlet/return pipe at the rad, but could only see the bottom hose - any idea where the trans fluid goes through the rad?

Cheers

Pete

 

[crushers]

it goes through the pan at the bottom of the rad.
this is where an aux cooler is nice, it cools the fluid before it gets to the rad. the rad then brings it back to proper operating temp before entering the tranny.
without the aux cooler if the tranny is working hard and generating a lot of heat the rad can't bring it back down to the proper temp and the tranny eventually overheats...

thus the burnt fluid smell after that little "pull out your wallet" light comes on down by the shifter.

 

[wobbly]

Thanks

Fluidyne have recomended an alternative, I have asked for some photos as I intend to fit it between the chassis legs, at the bottom of, and just in front of, the main rad & aircon rad - i dont want to put it directly in front of those two as I dont want any loss of air through them.

Cheers

Pete

 

[RHD Toyota's]

mines still running strong.
Brought it over with 56,000kms now its got 130,000kms

planned upgrades: bigger turbo
Changing fuel pump from 2lte to 2lt, its rebuilt and had some internal work.
going with water to air intercooler

I'll try and dyno it before and then after upgrades, stayed tuned for results.

 

[RHD Toyota's]

oh yeah just for reference 2lte rads
toyota factory rad has 53 cooling passages, a re-cored rad that I have is from canada with only 46 cooling passages.

Make sure to get the toyota factory rad it can handles 35" tall mudders hwy speeds and BC mountains.

 

[crushers]

which begs the question, if the factory rad is so fine then why all the cracked heads in the first place?
could it be because 53 smaller cooling passages get plugged easier than 46 larger passages?