1974 Toyota FJ40 (getting around to it)

[BOBWhite74]

I decided to order the AJUSA gasket so glad to hear its good quality and from looking at the pictures it lines up pretty good with the head. Not to open a can of worms but I use copper coat on manifold gaskets but would it be a good idea to use it on the head gasket as well?

The threaded stud is the head bolt that I didn't take out since I left the rocker shaft in when I took the head off.

 

[Pighead]

I use copper coat on manifold gaskets but would it be a good idea to use it on the head gasket as well?

I use Copper Coat on the manifold gasket too, I use nothing on a head gasket.
Head gasket still available from the dealer...

EDIT: While your in there, I had my machine shop drill and tap the manifold stud/bolt holes on the 1.5 head for the larger 2F studs and nuts

 

[BOBWhite74]

I use Copper Coat on the manifold gasket too, I use nothing on a head gasket.
Head gasket still available from the dealer...

EDIT: While your in there, I had my machine shop drill and tap the manifold stud/bolt holes on the 1.5 head for the larger 2F studs and nuts

I looked for OEM Toyota one but it said it was discontinued for a 74, Unless you know something I don't!

I have 10mm studs on mine and it took some filling to squeeze the intake and exhaust header into place. Its still a TIGHT fit!

 

[Sparkman86]

I use Copper Coat on the manifold gasket too, I use nothing on a head gasket.
Head gasket still available from the dealer...

EDIT: While your in there, I had my machine shop drill and tap the manifold stud/bolt holes on the 1.5 head for the larger 2F studs and nuts

View attachment 3589616

Are the 2f and f.5 head gaskets the same? I had noted that 11115-61010 was for 1975+ 2f and 11115-60033 was for 1974 f.5, the latter being discontinued.

 

[Sparkman86]

I decided to order the AJUSA gasket so glad to hear its good quality and from looking at the pictures it lines up pretty good with the head. Not to open a can of worms but I use copper coat on manifold gaskets but would it be a good idea to use it on the head gasket as well?

The threaded stud is the head bolt that I didn't take out since I left the rocker shaft in when I took the head off.
View attachment 3589607

of course.

 

[Pighead]

Are the 2f and f.5 head gaskets the same? I had noted that 11115-61010 was for 1975+ 2f and 11115-60033 was for 1974 f.5, the latter being discontinued.

The exact same? I don't know. Perhaps cylinder diameter is different, perhaps other things too. But it seems to work. and it's going on a 2F block so it's at least half correct.

 

[cruiseroutfit]

The exact same? I don't know. Perhaps cylinder diameter is different, perhaps other things too. But it seems to work. and it's going on a 2F block so it's at least half correct.

I’ve outlined all the F family gasket differences here:

In the case of F.5 vs 2F

 

[BOBWhite74]

Thanks for the help everyone! Sorry it's been two months without an update but I've got the plugs in and it's not leaking coolant anymore. It was running great but last night it stalled while idling and now it won't run worth a darn.
I've gone through and checked:
Coil (swapped out didn't change)
Distributor and points
Timing
Wiring
Spark plugs (slightly rich but fine)
Fuel pump (removed return line and fuel pump seems to be delivering enough)
Carburetor (popped off top and couldn't find anything)

The only thing that's weird is the fuel level is low in the carb sight glass but filling the carb up through the vent doesn't seem to affect anything. I can get it to run for a few seconds but then it falls flat and dies. No fuel in the oil like a bad fuel pump and spark has always tested fine. Could something in the distributor be worn out just enough to cause this? Something with the valves? This has got me stumped!!!

 

[BOBWhite74]

Here is a video that kinda shows what I'm talking about.

It's stuck outside so I'll have to pull it inside before I do anything major.

 

[DeskJock]

Thanks for the help everyone! Sorry it's been two months without an update but I've got the plugs in and it's not leaking coolant anymore. It was running great but last night it stalled while idling and now it won't run worth a darn.
I've gone through and checked:
Coil (swapped out didn't change)
Distributor and points
Timing
Wiring
Spark plugs (slightly rich but fine)
Fuel pump (removed return line and fuel pump seems to be delivering enough)
Carburetor (popped off top and couldn't find anything)

The only thing that's weird is the fuel level is low in the carb sight glass but filling the carb up through the vent doesn't seem to affect anything. I can get it to run for a few seconds but then it falls flat and dies. No fuel in the oil like a bad fuel pump and spark has always tested fine. Could something in the distributor be worn out just enough to cause this? Something with the valves? This has got me stumped!!!

Looks like a fuel supply or float problem to me.

 

[Pighead]

The fuel level in the porthole looks good, does it stay there when the engine dies? The idle speed sounds kinda slow, do you have a tach on it? I might start by just bumping up the idle speed, either with idle speed screw or by advancing timing, maybe both. See if it will stay running with a faster idle.

 

[BOBWhite74]

The fuel level in the porthole looks good, does it stay there when the engine dies? The idle speed sounds kinda slow, do you have a tach on it? I might start by just bumping up the idle speed, either with idle speed screw or by advancing timing, maybe both. See if it will stay running with a faster idle.

Is the fuel level supposed to be in the center of the port hole? Thats where it was when it was running good but now its stays low all the time. Maybe I'll try adjusting the float next.

Even when I keep it revved up it still dies and I've played with the timing to no avail. This might be the weirdest problem I've seen on any gas engine.