Block Heater for 3B (1 Viewer)

[apdhillon]

I own an '84 BJ42 that has the 3.4L 4 cyl "3B" diesel engine.

The winters are getting cold here in MD and I wanted to know where I can source a block heater for the motor so I don't burn out my starter when trying to crank on cold days.

Any help is appreciated. Thank you.

 

[roalco]

Check out Zerostart, the 3B freeze plug heater is listed here in their catalog under Toyota - Light truck engines 4cyl (pg 27).
http://www.zerostart.com/UserFiles/File/2009_Zerostart_Application_Guide_and_Product_catalog.pdf
I use one, and it's in the frost plug right at the back of the fuel pump. it can be installed there without removing the fuel pump or the edic, just take your time, it's a bit finicky.

 

[VTCDN]

Sorry , Guys who have frost plug installed units.

There a PAIN IN THE Bum .. If they fail cuz there brass (Zinc-copper) ,leak cuz the "O" rings are crap..
Try to find a repair METRIC freeze plug !!!
I have had to repair the crap we installed to many times.

EZ is a OIL PAN HEATER !!!!


VT

Beside MD buddy is warm , fix your glow system .

 

[roalco]

Sorry , Guys who have frost plug installed units.

There a PAIN IN THE Bum .. If they fail cuz there brass (Zinc-copper) ,leak cuz the "O" rings are ****..
Try to find a repair METRIC freeze plug !!!
I have had to repair the **** we installed to many times.

EZ is a OIL PAN HEATER !!!! WOW , Heat rises up > who-da thunk.
KISS , and keep the coolant in with one less area to escape.

Just a different box.

VT

Beside MD buddy is warm , fix your glow system .

Sorry you had a hard time with yours, I installed mine in 1988 and use it every year when things get cold, no problems yet... and it has always worked very well. I do also use battery blankets, they make a huge cranking difference.
As far as them failing because they are brass...?? There's lots of brass in your cooling system, rad, oil cooler, etc. I don't see the problem as long as you take care of your coolant.
Not knocking pan heaters, but external ones (not internal pocketed oil pan heaters) can be inefficient and have thermal transfer problems, not to mention oil blowby, diesel, road salt and dirt covering your 120V connection...

 

[VTCDN]

Well there are cheap ones and industrial type sold.

I was tainted due to the dealer selling the crappy ones.
Thin brass ones and poor seals. Washer under bolt holds the "O" ring is the poor type.

The one that was in one of my 3bs was a crap one. Pain to replace the 35mm plug also.
I have also a good thick industrial one from the other engine , This ones "O" ring is flat washered and has a bore area for the seal, much better constructed. Cast bronze over thin stamped cheap brass.

That is what I was getting at. 3B area to get at is also a RPITB. If i didn't have a hoist access , and pull the inner fender , it would be a huge hassle .

VT

 

[apdhillon]

***UPDATE*** 1/26/10

So I ordered the zero start block heater to be put through the freeze plug. It had trouble sealing even with some sealant and anti-freeze is leaking. It's not fitting like it should. Is there any other supplier that builds better quality? I don't mind the price.

What about block heaters which can be inserted through the lower radiator hose? IIRC, theres some mechanic shop in Canada which works on diesel land cruisers. Does anyone have some contact information, they might be able to help me.

Thanks.

 

[VTCDN]

Fill out profile : https://forum.ih8mud.com/usercp.php

then we know where you are in the second largest country in this world.
Plus the unit you purchased , make , where all info please.

 

[Stone]

I have the lower rad hose heater from Zerostart installed in my 12H-T 80 series. I took my truck up to the Cariboo where temperatures dropped to -22*C for a couple of nights. I also have Rotella T6 5W40 synthetic oil that I'm running.

What I found was that when I plugged in my lower rad hose heater for 4 hours just before starting it, the engine was much happier than if I didn't plug it in. The engine is still cold, i.e. I can't start the heater and get hot air right away, but it starts much easier, smokes MUCH less, and idles happily without having to give it a little throttle. If I didn't plug it in, it took forever to start even after several glow cycles (glow screen, not plugs), smoked like hell when it finally started, and I had to give it a tiny bit of throttle to keep it idling happily for at least a couple of minutes.

 

[haffi]

Welcome to DEFA - Homepage
Calix AB

I dont know if these have any 110v stuff, but I guess you can find out if you surf their sites.

 

[RufusTheDufus]

I'm digging through some parts in the garage today. I found a block heater. I think I bought it for a 3B but I can't remember where it came from. Part number on it is LR20976.

I know the block heater is supposed to go into a 35mm frost plug between the injection pump and EDIC on the 3B. I'm trying to figure out if this heater will work.

The diameter of dimension A is 34.75mm. The diameter of dimension B is 37.80mm. Is this too big or is it the correct size to fit a 35mm frost plug hole?

 

[canucksafari]

I did a MUD search and that number comes up in the 80 Series section: IH8MUD Forum - Search Results.

 

[RufusTheDufus]

I saw those topics too but none of them mention the size of the freeze plug hole.

 

[valdezhilander]

I have both a freeze-plug heater, a 50 watt oil pan heater and a trickle charger, this is a standard North Slope set up. I have to say the little oil pan heater works great. The heat rises up through the block and everything gets nice warm oil at startup.
I just went into NAPA and told them I needed a 35mm block heater with a low profile heating elemment and the parts guy handed me one right off the shelf. It is important to make sure the hole in the block is very clean, I used my dremmel and a little wire wheel to clean mine.
The pan heater is about 3"x6" and it fit just behind the oil drain plug. Again, it was right off the shelf.
Sometimes I leave my truck parked for three weeks at a time so the trickle charger keeps the batteries from freezing.

 

[RufusTheDufus]

I popped out the freeze plug today. The LR20976 does not fit in a 3B.

 

[DanS HJ-45]

Again, it was right off the shelf.

That's market dependant. When I lived in Alaska and Montana I had the same experience, in that they were on the shelf at EVERY auto part store. In Albuquerque, NM? Not so much. Even the stores closer to the mountains outside of Albuquerque they had to order them from a warehouse.

Rufus: this block heater works in our 3B.

I bought it for my 2LT-E, but the heating element was to deep, so I tossed it on the shelf, and when replacing the freeze plugs on the 3B I decided to give it a shot. It's in the second from the last plug on the left side. It didn't fit in the rearmost hole (the element was too deep for the 3B there too).



Dan