Date code carb identification

[JP_FJ40]

rebuilding this Non-USA -61090

pure speculation, but IF the code was stamped on the bump under the capped vac port, it looks like it may have been over-struck (RR for “rebuilt”?), and re-stamped 7C8 (March 8, 1977).

 

[FJ40Jim]

The pictured carb is a USA spec (note the EGR tube), hi-altitude spec (note the HAC fitting in the airhorn), 1977 (note the 2 ported vac fittings but no TP or PV fitting) 2F carb.

The previous rebuilder was kind enough to stamp the PN on the airhorn before the original label was sandblasted into oblivion.
From the catalog:
21100-61090 HIGH ALTITUDE SPEC. (08/1976 - 08/1977)

Useless trivia: In 1977 the year character of the date code was cast in the airhorn. For whatever reason they didn't do that before or later.

 

[GA Architect]

The pictured carb is a USA spec (note the EGR tube), hi-altitude spec (note the HAC fitting in the airhorn), 1977 (note the 2 ported vac fittings but no TP or PV fitting) 2F carb.

The previous rebuilder was kind enough to stamp the PN on the airhorn before the original label was sandblasted into oblivion.
From the catalog:
21100-61090 HIGH ALTITUDE SPEC. (08/1976 - 08/1977)

Useless trivia: In 1977 the year character of the date code was cast in the airhorn. For whatever reason they didn't do that before or later.

Jim,
I have the exact same 21100-61090 High Altitude Spec carb on my 77' FJ40. It is desmoged, and I am uncertain as to what ports can be capped and which need to hooked up. Being that the rig is located in GA, can the HAC port near the airhorn be capped, as shown in the photo below?

Would you recommend a specific port in which to hook the distributor vacuum line too? Maybe port #5, #13, or something else?

If a desmogged port is not hooked up, should it be capped? i.e.: both ports on the blue BVSV, the unused Port #5 or #13, the unused port on the exhaust manifold (fuel filter?), and the HAC port?

Any help would be greatly appreciated.

 

[subzali]

You mean the intake manifold and the gas filter, not exhaust manifold and fuel filter. Yes unused ports should be capped.


...via IH8MUD app

 

[GA Architect]

You mean the intake manifold and the gas filter, not exhaust manifold and fuel filter. Yes unused ports should be capped.


...via IH8MUD app

Yes, what Matt said.....

Thanks, still trying to learn all the parts to my 40.

 

[FJ40Jim]

Subzali speaketh the truth.

The big concern in GA's pic is the fuel feed line that has been cut and replaced with a kinked up piece of rubber hose. It is under pressure, it is above the exhaust manifold, it is bent and it is chafing against the aircleaner.
Please carry a fire extinguisher and a camera at all times. One or both may be suddenly necessary.

 

[GA Architect]

Jim,
Thank you for the information. I didn't like what the PO did with the fuel line connection and will be correcting soon. With Pin Head's generosity of sending me the inlet connector, I will be eliminating that existing banjo fitting and will make a new metal fuel feed line.

All unused ports will be capped.

 

[GA Architect]

Subzali speaketh the truth.

The big concern in GA's pic is the fuel feed line that has been cut and replaced with a kinked up piece of rubber hose. It is under pressure, it is above the exhaust manifold, it is bent and it is chafing against the aircleaner.
Please carry a fire extinguisher and a camera at all times. One or both may be suddenly necessary.

Jim,
Do you recommend a specific type and/or material for a new metal fuel line? I believe most of the ones people have made on MUD use the 5/16" O.D. steel hard pipe.

 

[subzali]

I was lucky and found a guy parting out a rig in the classifieds section that sent me fuel lines. You could try SOR, cruiserparts.net or classic cruisers as well. Assuming you don't want to bend your own.

 

[FJ40Jim]

Fuel lines are standard 5/16 bundy tube. FLAPS will have it, possibly with an unneeded SAE flarenut on the end, just cut that shiite off.

 

[GA Architect]

Fuel lines are standard 5/16 bundy tube. FLAPS will have it, possibly with an unneeded SAE flarenut on the end, just cut that shiite off.

I'll get the pipes bent and installed this week. I've hated that hard fuel line to rubber hose to carb banjo fitting from day one.

Thanks for all the helpful information.

 

[GA Architect]

Subzali speaketh the truth.

The big concern in GA's pic is the fuel feed line that has been cut and replaced with a kinked up piece of rubber hose. It is under pressure, it is above the exhaust manifold, it is bent and it is chafing against the aircleaner.
Please carry a fire extinguisher and a camera at all times. One or both may be suddenly necessary.

My new JEGS 5/16" fuel line and tube bender came in on Friday. Thus I proceeded to bend some fuel line this weekend. Does this look a little better?

 

[FJ40Jim]

Well done sir, well done!

 

[Ken White]

Just found this thread and can some then tell me if this would be the original carby off my 1971 FJ40. From reading it would appear that this carby build date would be 26th May 1971. Also can you still get rebuild kits for them.

 

[FJ40Jim]

Ken, yes that is a 1971-ish carb. Dunno if your market had it, but starting in 74, US-spec F engines had a fuel feed & a fuel return line connected to the carb. Kits are still available. In USA, cruiseroutfitters.com sells Keyster brand kits imported from Japan. Probably available from a vendor in Oz as well.

 

[Ken White]

Thanks Jim that's one more piece of the puzzle solved. I rang around and looks like I can get a kit over here. Are they hard to rebuild do you know.

 

[FJ40Jim]

Not hard, it's a very straightforward design.
Things to watch for:
The air horn and main body casting a soft lead-zinc alloy that will be very warped. They need straightened & milled/filed flat.
It has probably been rebuilt eleventeen times before, so parts may be missing, incorrect or in the wrong location. Pay close attention to the info in the service manuals.

 

[Ken White]

Sorry had to edit as I put the incorrect year of my 40 in the original post. Its a 71 model not a 74 model.

 

[Honger]

I'll jump in with some more. My FJ40 is a 1977, but my motor is a 1984 (swapped in Saudi at some point).

1 C 21
1981, March 21

So not the original carb that went with my motor.

I say 1981 because the part tag says 61012.
61010 was 01/1975 to 07/1976
61011 was 08/1976 to 08/1979

 

[cuencanolenny]

This carb became available to me today. He allowed me to bring it home so I could assess what it would take to fit it to my vehicle. Clearly it is setup for mechanical linkage and cable choke. There is a weight on the left rear corner with a tang and connected to nothing. The code is 1 J 14. Did they use the letter "I" on their coding as this would effect whether it was September or October, I guess not a big deal which month and "presumably" a 1981 since it has mechanical linkage. I have no idea what history there is to this carburetor. I would be replacing a 1bbl Aisan if I were to go this route.