I just put a 350 crate motor in my fj40 and i have the stock radiator with a taurus fan and 160 termostat the fan is set to come on a 190,, it runs about 195 degrees around town but on the freeway it gets up to 215 or 220,, anyone have this setup that works , I would like to keep it a little cooler

Doubtful if you get it lower with a stock radiator, 225 with antifreeze won't hurt it.
Check out my cooling thread here,

http://www.pirate4x4.com/forum/showthread.php?t=374071&highlight=cooling

if its running hot at speed, it will likely be due to the radiator. Some people have luck with a stock radiator, but a cross flow aluminum one is more ideal.

cheers-
Dustin

just my mellonhead input, ditch the tauras fan. Use a clutch fan and build or modify the shroud so it fits, it has to go 4 " lower and a little to driver like a 1/2 inch IIRC. Tin snips and a rivet gun make it real easy. I mean bolt it on but use rivets to madify the stock shroud.

just my mellonhead input, ditch the tauras fan. Use a clutch fan and build or modify the shroud so it fits, it has to go 4 " lower and a little to driver like a 1/2 inch IIRC. Tin snips and a rivet gun make it real easy. I mean bolt it on but use rivets to madify the stock shroud.

I agree... The taurus fan works GREAT off road, but from what I remember, NOTHING beats the clutch fan with a shroud on the freeway. I used to heat up like crazy with my electric fan. I got rid of it and made a shroud. Got a clutch fan, and I was good to go. Never got above 180

DIma

I have the exact same setup and it hates the Texas heat during the summer. You can wheel all day but won't stay cool on the highway. I don't drive it much at highway speeds anymore so I haven't had any problems and decided to leave it alone but I was looking at getting a RonDavis aluminum radiator. You should be able to fit a slightly larger one then stock in there.

I agree... The taurus fan works GREAT off road, but from what I remember, NOTHING beats the clutch fan with a shroud on the freeway. I used to heat up like crazy with my electric fan. I got rid of it and made a shroud. Got a clutch fan, and I was good to go. Never got above 180

DIma
This is good info, as I was plannin' on using the Taurus fan on my 40 ,guess I'll be lookin for a clutch fan and buildin' a shroud :D Thanks guys !!

To the OP: Nice username, My last name is DAUGHERTY !!!!! :flipoff2: DAUGHERTY'S and 40's go good together !!!::beer::beer:

thanks for the info. i guess i will be looking for a new radiator or have some rows added to mine ... (does anyone know if that will work) or how does the clutch fan do on the trails. It gets hot here in fresno the last three weeks its been over 100

You are hitting more air at 40 mph and above than any fan can generate.
So if it's heating over 40 mph it don't matter what fan you are running.
Heating at highway speeds=not enough radiator

Thanks texican. I went to two radiator shops this morning and this is what ive found,, i do have a 4 core radiator someone must of put one in when they did the first v8 converson . both shops said my gauge was reading 20degrees to high and said i have a couple of rows cloged up .. acording to the infered temp gauge, im running around 180 i might just have it rebuilt and see ... thanks again

Was going to say what texican said. We don't get to hot here but i have a taurus with a cross flow aluminum and its honestly the first V-8 that I have had no issues with.

arndog

Before ya replace it try this, (it worked on the 79 FJ55 it's radiator is unobtanium)
take it off, install the cap lay it down with the hose connections up buy a gallon of pool acid, mix it 50% with water, pour it in, leave overnite, pour it out and rinse, 55 was peggin the temp gauge on the highway, now it stays at 1/4 up off cool even in these temps........ no need to spend money needlessly.......

i guess i will be looking for a new radiator or have some rows added to mine ...


If you do get a new radiator..I'll take the old one:D It may not keep a 350 cool but I bet it will still do the job on my 2f.

sory to be so anal about this but its a new motor,,,anyone know how accurate are those infered lazers are because i just pulled my temp sending unit out and put it in a pot of boiling water and it was reading a little low, the shop infered lazers said it was reading 20 degrees to high

make sure your timing unit is good. I fussed around with everything and after I did everything else and was still running hot under load at 2600rpms I replaced HEI unit and my highway temps settled back down to 195-215. the top end of the HEI was word and corroded.

If its a new motor and new ignition this likely isn't the problem but that is my 2cents as the rest has been covered. Also-make sure your timing is right.

thanks ,,,i did check the timing and set it about 8 btdc i have a mallory hei 85 series it is the old one so i changed the moduel and cap and rotor, i even changed my sparkplug gap to 55 . i realy dont mind spending the money on a radiator but i would l like to get one that is going to work so i just dont eat it

You are hitting more air at 40 mph and above than any fan can generate.
So if it's heating over 40 mph it don't matter what fan you are running.
Heating at highway speeds=not enough radiator

Bingo...Ron Davis makes a drop in radiator for a cruiser. I went with a custom dual pass setup and two weeks ago pulled a dead jeep through a trail and it still cycled the fan while pulling uphill, on the gas. :eek:

I think electric fans cool better on the trail, and at speed you should be forcing more air through the radiator than ANY fan will produce.

Damn good rule of thumb, if after driving and it's up there at 225 or over, when ya kill it, if its sitting and gurgling out the overflow you are in the danger zone...my fj55 was doing this prior to the acid flush, now it barely get 1/4 way up on the gauge.
MAN A FRE ALSO MAKES A DROP IN ALUMINUM I HAVE USED

so you think the man a fre one will work with the taurus fan,, they have it on sale right now with trans cooler for 599

so you think the man a fre one will work with the taurus fan,, they have it on sale right now with trans cooler for 599
check ebay. you can get one for half the price.

I also have experienced everything described in this post.

I installed a 2600 CFM efan and it was crap.

I had my stock 3 core rodded out and put the mech fan back on, little better.

I bought a 4 core copper radiator and use an 8 blade mech fan. Works great.

Also be sure your fan is half way in/out of the shroud. This does make a difference.

Also to check your mechanical temp gage. Get 2 quarts of water in a rolling boil, at sea level this should be 212 degrees. Set your sending unit and your thermometer in the boiling water, they should read within 3 degrees of each other.

Do not rely on a so called digital thermometer. I am in the HVAC trade and have seen 5 of them read all different. I use a two inch Taylor analog because it has a calibration nut on the back, 212 for boiling water, 32 for freezing water. Check.

so you think the man a fre one will work with the taurus fan,, they have it on sale right now with trans cooler for 599

I'm pulling my trans off the radiator. I checked with pretty much every big name and all wanted to put the trans cooler in the radiator. I'd never had a problem with trans temps, but agreed to it for packaging reasons. My trans now runs around 200 degrees with the motor, before it starts working I was the trans at 220 this weekend and the engine at 200. With the seperate cooler, the trans NEVER got above 180.

http://cgi.ebay.com/ebaymotors/TOYOTA-LANDCRUISER-74-75-3-9-V8-ALL-ALUMINUM-RADIATOR_W0QQitemZ250466400751QQcmdZViewItemQQptZM otors_Car_Truck_Parts_Accessories?hash=item3a50f5f 9ef&_trksid=p4506.c0.m245

ok , i can see that this is not something set in stone anywhere.. so went to pic n pull and got a caddy cluth fan going to build a shroud and see. if that fails going to get a aluminum rad. (texican have you ever used that one thats on ebay) that way i can try the taurus fan and the clutch fan on both rads

I have not used the one on Ebay, save yourself some time though, do the acid bath first, this will cost $10 and some time. I would rather do this than have a rad shop rod one out.
The clutch fan or shroud won't help at all with your symtoms.

ok I pulled it out ,, had some pool laying around ,, hope it works

Butch,

Do you know how the pool acid reacts with an aluminum radiator? Does that help with block scale and the like?

Muriatic acis will eat calcium and othe water deposits. It is also usid to acid etch and clean/ remove concrete. I also use it to clean the bath tub.

Butch,

Do you know how the pool acid reacts with an aluminum radiator? Does that help with block scale and the like?


I was told not to use it on Alum radiators, might be someone on here that knows more about the chemical reactions.........

Muratic acid is diluted hydrochloric acid, 30% acid 70% water. Make sure you wear protective equipment and have some Bicarbonate of soda on hand to neutralize the acid. It will burn the crap out of you!
I would make sure you flush the radiator well with water and the Bicarbonate of soda, after you do the acid treatment.
Once you neutralize the acid that you used to clean your radiator its harmless.

have another question , just curious if i do go this way ..the caddy fan sits about 2 3/4" away from my rad is that ok . if i make a shroud that closes it up pretty good

Yes

ok another question ,,, sory,,, i have a short water pump does it make a differance on the how much water it will move between the long and the short pumps

i havent got this thing back together yet ,, had to go to work .. but i did take it to a rad shop and had them open it up and bush it he said a few where clogged not that bad though ,,, i going to try and get it back together this weekend

Short and long pumps are the same... just different distance from the fan mounting surface to the pump mounting surface.

well so far so good the thing stays a 190 now.. it ended up being a few things my carburator was leaning out at speed do to it being really filthy. i had a small leak in a plug under the exhaust man.. so the four core rad and the taurus fan is working fine ,, im still making a shroud so i have the option of the caddy fan thanks everyone