2H block heater / circulator

[mcmlxxxv]

Hey cold weather guys , Just wondering what you have to keep your coolant warm in cold weather . I do have a block heater in the back of the oil cooler plate but I dont feel like its enough. Have to let the engine run quite a while before going even when its plugged. It start well ... but still feel pretty cold.

Thinking about getting a circulator , not sure what kind yet that's why I'm curious to see what does the job for you.

thx for your input

 

[Squash]

There are some great circulating types out there. I have been using these for over 4 decades.
All of my Toyota's have had this system, and some days I swear it was a 10 minute install.
Mind you my Hdj80 now has a Webasto.
Most units come with all required hardware.
I find that a 14mm deep socket is perfect, and it helps if you remove the front tire before attempting to remove the block drain cock, and insert the 5/8" hose adapter.
Mount the heater low to help convection. Ideally you set heater control to windscreen when plugging in.
Don't be surprised if you have 1/4 on your heat gauge and some clearing of the lower windshield.
No need to drain the coolant, vaccum tends to hold the coolant...either way your mess is the same.

 

[mcmlxxxv]

That is what I'm looking for! My actual heater only help for starting... I would really like it to be already heated up a little like you describe !

 

[mcmlxxxv]

I found the block drain fitting location witch is perfect for the circulator inlet, but its on the driver side (left) and all the heater circuit hose are on the other side.

Did install it according to the instructions ... But I'm not impressed ... It's was -27°c this morning and had to do 3 glow plug cycles ... And leave it running a good 10 minutes before going.

The heater hose is probably too high in order for it to work properly .... Not sure where else could be better .

I'm open to Ideas

 

[mcmlxxxv]

just a tought ... I was thinking of switching places for the temperature sensor ,since I don't use the one from the super glow system , I could plumb the heater before the thermostat and get my temperature reading on the head from the other sensor location.

would it be ok ?

 

[Squash]

Your plumbing is a little funky!
You want the y fitting feeding up to the valve in a straight line for better convection.
These thing work well....
I can send you a picture later.
Go to the outlet of heater, cut the hose just before it bends, say master cylinder height.
Flip the y so coolant goes directly from unit to the control valve on the straight part of y.
The other section back to the top of engine.
Think directly and smooth lines.
Heat like steam rises, goes into the valve section, through your heater core and back out into the block.
Always leave your defrost on when plugging in the unit.
This is a 1HZ, same for 1HD-FT and 1hdt.

 

[mcmlxxxv]

I could try flipping the Y fitting to get a similar setup ... but having the hose on the passenger side and the rear heater make it a different challenge :/ I will try it anyway ... Its no big deal to do


If its still not enough I will weld a bung to the thermostat housing .. so it will be directly in the head if the thermostat stays closed

 

[Squash]

You should have coolant entering from block drain and heater valve, through the unit and exiting your coolant return line to block.
Start your truck, let it warm up. Touch the hoses....first one into firewall should be the hottest, and then find the return line to your block this should be cooler.
I've never had to worry about thermostat lines.
In my picture the heater unit is on the left, just tie into the hose going from your block and into the firewall.

 

[mcmlxxxv]

HO MAN ... I got it wrong at first I think....

first of all my heater is way too high ... The block heater outlet must go IN the block drain (The drain should not FEED the block heater) in order to push heat from the bottom of the engine and push the higher coolant (FROM the heater valve down in the feed port of the block heater)

I know it might sound a little different than your setup but there is literally nowhere I can plumb it back to the block and this way should heat From the lowest part of the engine pushing the heat up in the block to the rest of the system.

I'm curious where you placed your device If you have a picture or can describe where ,I'd be gratefull


EDIT: Upper description is wrong too... kept on reading the instruction manual and my Install should be working according to it... but my heater is too high ...
i will try to lower it first and update.

 

[tonyl13]

? mcmlxxxv
Where did you find the heater (link) / what is the part number
Have been using the Kat's radiator hose (just died after 3 years) but it fries the heater hose to so you have to change every thing on replacement

Thanks Tony l

 

[Squash]

HO MAN ... I got it wrong at first I think....

first of all my heater is way too high ... The block heater outlet must go IN the block drain (The drain should not FEED the block heater) in order to push heat from the bottom of the engine and push the higher coolant (FROM the heater valve down in the feed port of the block heater)

I know it might sound a little different than your setup but there is literally nowhere I can plumb it back to the block and this way should heat From the lowest part of the engine pushing the heat up in the block to the rest of the system.

I'm curious where you placed your device If you have a picture or can describe where ,I'd be gratefull


EDIT: Upper description is wrong too... kept on reading the instruction manual and my Install should be working according to it... but my heater is too high ...
i will try to lower it first and update.

I'll get that come daybreak!.

 

[mcmlxxxv]

@tonyl13 It's a Philips and Temro 3308003 circulator tank heater . Got it from where I work at NAPA . but its esy to find in any autopart store or Amazon.

 

[Squash]

HZJ75 has the 1500watt system.
The HDJ80 had the same system, but now has a Webasto just because I am out in the woods often.
Both systems are plumbed identically.
Again, you only need the block drain as your source to feed the heater as low as reasonable.
Heated coolant rises up, and is tied into your block to heater valve hose using the "Y".
No reason to worry about anything else.

 

[mcmlxxxv]

Thx !!! That confirm 3 things ... My heater is installed too high , the Y fitting is backward and I'm jealous of your 80

Big thx taking these pictures , I will try to fix it this weekend and get back with results