bigger radiator

[cplux]

I'm wondering what radiator to chase up to better cool my 4y-c hilux, are all the diesel hilux ones the same or are there some that are bigger/better than others??. Need it to fit into my yn67 2/88 hilux. I realise that diesel to this petrol i will have to get inlet/outlet sides changed.

Also can anyone tell me physically how much bigger the (depth mainly) the diesel ones are as i have to squeeze some air intake piping between the motor and radiator too.


Cheers

Craig

[PSI3y]

if you have a 4y you will most likely have a two core like my old 3y had. If you want more efficient cooling you should upgrade to a 3-core. Some of the newer lux's i have seen in the wrecking yard have got 3-cores in them and they seem to be 15-25mm thicker because of the extra core. There is also the option of getting your old one cleaned properly and adding thermo fans of some sort. my 6cyl engine is cooled quite well with a 3-core with two push 10' thermos and no engine driven fan. never comes up over half way. hope that helps

[cplux]

I have a 16" thermo on my current radiator, it is fine around town but is bad on the beach and sometimes when in the bush.

[LilBlkDuck]

??? My old 4Y Lux ran fine, are you still running the Shroud? if not this should help.

[PSI3y]

i also had no problem with temps when running a 3y with a leaky 2 core. maybe you need to look into getting yours flushed or water pump operation? The head is in good condition right?

[cplux]

there is nothing wrong with either the rad, water pump or fan shroud. My 4y has always heated up a bit under hard load (especially on the beach) with eiter engine fan or thermos. Most times the thermo controls the temp pretty well. Slight temp rises have never really worried me (except when damn thermos die in the arse).

My main reason for wnating to go bigger is the added stress of asupercharger which makes motor heat up quicker. Most of this will be sorted by an intercooler.

[hiluxv8]

I run a 4 core 40 series cruiser radiator in my hilux.i welded new mounts on the sides of it and had to cut and box the front support between the chassis rails under the radiator as the cruiser unit is longer than the hilux one.

[toyrex]

In all the Commodore V6 conversions I do Ifit the standard Toyota LN106 diesel radiator I also replace the water pump pulley and fit a 11 blade viscous coupled fan
There are a lot of woodies that fit Thermo fans but do not bother to uprate the alternator to carry the extra amperage there reasoning is its not there fault they did not know
A 100 amp alternator is a peak load rating not constant load, continuous
load is about 65% or a 100 amp has a constant load of 65 amp
SO what is the standard 35 ot 55 amp alternator worth

Adrian

[+dj_hansen+]

I think most/all of the diesel hilux radiators are 3 core.

[PSI3y]

"My main reason for wnating to go bigger is the added stress of asupercharger which makes motor heat up quicker. Most of this will be sorted by an intercooler."

have you got the charger on the car already or are you planning to put one on?

An intercooler will not be necessary for a carb 4y. by supercharger do you mean turbocharger?
if not i predict the use of the ever popular/cheap arse sc12/14? supercharger will not need a intercooler. if you did have a draw thru with a intercooler you can expect some action with the first backfire!

[cplux]

supercharger is on car already, and yes it definately does need an intercooler. running throttle body injection not carb and it is an sc14

[PSI3y]

an intercooler shouldnt be necessary. where is the charger located? right next to the exhaust? intake temps should not climb too greatly from the sc14. is the throttle body before or after charger? and the engine is a 4y-e because of injection?

[cplux]

s.c is about as far away from exhaust as possible, other side of motor above dizzy. throttle body is after s.c. I.e blow through. Motor would be 4y-e if it were using the factory toyota 4y-e parts, but it is a 4y-c with throttle body injection.

You can physically feel the change in heat of the compressed air out of the s.c with no piping connected.

[toysuzi]

hello cplux

i used a ln106 diesel radiator for my ln65 after i
porterd the head/new cam grind.turbo charged. set at 12.5psi none intercooled & fitterd mandrel bend 3'' exhaust
the ln106 radiator bottom tank was 3'' lower than the ln65
the core was thicker also from memery mine was 3core N the later was 4core

around a year later i fitterd a 4.3litre v6 buick diesel & turbo charged it. but i used a custom made PWR 4core alloy radiator witch the bottom tank was another 3'' lower than the ln106
the alloys are 30% more effciant in heat transfer for the same size core

brand new ln106 radiator trade $335.00 ratail $443.00
a strait fit PWR alloy unit retail $600.00 i dont know the trade cost

also another idea would to get a ln106 radiator remove both tanks n modify them to make it a tripple flow unit
and also change the hose lacation to suit the 3y-c outlet/inlets

with the tripple flow mod

weld in (silver solder) two deviders. one in each tank to make the water pass three times threw the core

for eg the radiator end tanks are 12'' wide
you put one devider 4'' from the end (intake side)=top
& the other 4'' from the end (outlet side)=bottom

that way the water makes three passes threw the core

in the top fills the tank hits the 1st devider. than flows down the core fills the bottom tank hits the 2nd devider. than flows to the top tank fill it than flows down the core to the outlet
it slows the water flow down allowing more effcient heat transfer

in std form the water flows in the inlet fills the top tank than flows down the core to the outlet
only making a one pass

hope that give you some ideas

daryl

[cplux]

Daryl
some good info there, thanks for that and the pm, be interesting to see if that idea works.