1HD-T Block Heater Frustration

[GreenPump]

Well, I hope your weekend is going better than mine.

I have previously done some research, and purchased a 35mm block heater from zerostart, with plans to install into the 35mm freeze plugs on the drivers (right hand) side of my 1993 HDJ81.

I found some posts on mud, and a few youtube videos of other folks performing similar installs on 1HZ and 1HDT. Cruiserparts appears to be selling this same heater:

https://shop.cruiserparts.net/index.php?main_page=product_info&products_id=1527

Right side has four 35mm freeze plugs. I pulled my turbo out of the way, and popped out the front freeze plug.

I discovered that the elemement of the heater protrudes too far for this spot. I measured approximately 23mm of space from plug lip to back of the coolant passage. The heater is 25.5mm from element to seating lip.

Does anyone have helpful suggestions/experience in this area. I am thinking of returning this heater and switching to a different 35mm heater with a recessed element. Zerostart #3100098.

It looks like, from the zerostart catalog, the 3100104 is 600w and the 3100098 is 400w.

 

[logicbyondreaso]

Run it where ENS said to. I think you will be fine.

Also, what is your block and bearing cap casting numbers? Would be interesting to know casting dates.

Thanks! Will take the advice and install it there.

 

[portugie joe]

I have a 1HDT with a turbo that is going to Montana. Does anyone have any recommendations for a block heater? Thank you

 

[dmjay]

I have a 1HDT with a turbo that is going to Montana. Does anyone have any recommendations for a block heater? Thank you

There are some listed in this thread.

 

[HDJ80L]

I have a Calix block heater on the exhaust side rear plug that was installed and used by the original owner. Don't have the connecting cable right now but do wanna install their inlet port cable somewhere in the engine bay one day for easy access. I do know it's a swedish quality product used by many truck manufacturers as a factory option for block heating.

Engine heaters | Calix

calix.se

Not sure which one is the right variant to fit the 1HD/HZ engine

Excuse the blurry picture

 

[GreenPump]

I am very happy with the zerostart circulating heater. If you are going to get a plug-in heater, you might as well.

It was easier to install than the freeze plug heater, is more powerful at 1500 watts, and it's only $118 on Amazon.

A year later it is holding up well. Don't mess around, go with one of these.