3FE Head Gasket

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Sep 11, 2019
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I don't see a lot of threads about doing the 3FE's head gasket, so I thought I'd start one.

Video of bubbles in the cooling system:


Oh look, a Starbucks latte where the oil should be:
20190910_165424.jpg


Previous owner state he did a head gasket because it got hot on the freeway.
He used the Ishino Stone one from partsgeek, not the Toyota one.

I'm not sure he torqued correctly, as the cooling system did leak pressure when I tested it.
My trusty $20 borescope revealed this s***show inside the cylinders a day later:
Cyl4:
cyl4.png


Pistons should have an oily puddle on them, right?
cyl2-piston.png


And I see where that one's getting its coolant:
cyl2-upper.png


I'm fairly certain the PO didn't do the HG right, or at least he just didn't clean up the block surface.
 
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Joined
Sep 11, 2019
Messages
259
Location
Utah Valley
I'll provide links to the resources I needed in this post here.

Manuals:
I followed the basic procedures for head removal/replacement in "3FE REPAIR MANUAL.pdf" - RM134E
F_3F_1985-1988_engine.pdf
F_3FE_1988-1992_engine_RM1341.pdf
(from 3f_3FE_1985-1992_engine - Google Drive which was originally shared here: LOADS of Toyota Landcruiser Manuals)

Tools:
13mm x 1.75 tap for the block-side head bolt threads:
Code:
https://www.amazon.com/gp/product/B01BOGUY2M
Straight edge:
Code:
https://www.amazon.com/gp/product/B01DQCBHJ6
Parts:
Head-> block dowel pins: 90253-17003 - Genuine Toyota PIN, DOWEL, CRANKSHA

Procedures:
My First Galley Plug Fix

Sealant cross-reference chart:
https://static.nhtsa.gov/odi/tsbs/2013/MC-10132083-9999.pdf (P/N 08833-00070, Three Bond 1324 or equiv. = Loctite 271)
 
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Joined
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Messages
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Steps taken so far:

Drained oil, added new, replaced filter.
Better, but not great:
20190915_114618.jpg


Idled without rad cap on, observed bubbles (see video in first post)
They could have been due to low coolant, and the system just purging air, but I'm not sure.

Started here:
20190915_144733.jpg


The rest of these are for reference, in case it's helpful
20190915_144737.jpg


20190915_144740.jpg


Note that the oil cooler is bypassed... I'm going to put the good, new hose on it as it's been cleared of wrongdoing (UPDATE: It's not the oil cooler: 3FE Head Gasket )
20190915_144743.jpg
 
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Joined
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Messages
259
Location
Utah Valley
20190915_144744.jpg


20190915_144747.jpg


20190915_144749.jpg


20190915_144801.jpg


The cold start injector's connector was disconnected, I'll make sure to get it back on
20190915_144805.jpg
 
Joined
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20190915_144825.jpg
20190915_144827.jpg
20190915_144831.jpg


I have a really hard time believing these should be crossed, unless it's just a junction for the hose to supply vacuum elsewhere
20190915_144835.jpg
20190915_144844.jpg
 
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Photos of the vacuum spaghetti, not that I trust the PO...
20190915_144847.jpg


20190915_144849.jpg


20190915_144915.jpg


20190915_144918.jpg


yes these heater hoses are kinked a bit, I need to find proper 90-degree ones
20190915_144920.jpg
 
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Messages
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20190915_150405.jpg


This wire to the AC compressor was ripped off of the connector... I'll be fixing that
20190915_150925.jpg


more vacuum spaghetti
20190915_153007.jpg


20190915_153026.jpg


20190915_153041.jpg
 
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Messages
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The FSM didn't mention removing the AC compressor that I noticed, so this next part was a fun surprise.
Underneath this hose:
20190921_114806.jpg


These two 14mm bolts holding the PS pump to the head are easy enough to remove:
20190921_114830.jpg


But this guy, hiding between the head and the AC compressor, is not.
20190921_114907.jpg


Looking at the motor from the passenger side, you'll see it just behind the AC compressor:
20190921_114847.jpg
 
Joined
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A 14mm socket, with a 3/8" square to 9/16" hex/bolt head adapter gets you this far:
20190921_115736.jpg


But it'll eventually be too deep and you'll need to switch to a 1/4" drive rachet:
20190921_115916.jpg


Which will itself eventually be too deep, and necessitate going to a 1/4" square to 7/16" hex head adapter, while suspending the socket with a magnet:
20190921_121152.jpg


at which point you should be able to get it all the way out of the head.

(This post brought to you by Harbor Freight, lol)
 
Joined
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Messages
259
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An empty air filter housing holds the removal torque sequence for you nicely:
20190921_121458.jpg


After which you should be pretty close to hefting this bad boy off of the block and discovering that opening the petcock on the radiator does not drain the head of coolant:
20190921_125850.jpg
 
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