6/'72 FJ55: stock drivetrain swap to '84 FJ60 drivetrain

[threadchaser]

8/78 FJ55 gas cap

More gas caps for comparison; in this case an 8/78 FJ55 that has been spray bombed a couple of times in some greens, one of which looks to be John Deere, maybe.

No idea if the "S" logo on the cap indicates stock or not. [EDIT: "Made in U.S.A." would lead me to doubt this is stock]

The 6/72 FJ55 does not have a lock on the gas filler cover door; this one does. Notice that the filler neck is different; I am guessing this has something to do with leaded versus unleaded but I haven't dug into it yet.

 

[FJ40Jim]

Not a stock 1975 USA cap. They have a little valve assembly that allows makeup air into the tank, and will purge pressure if the vent system fails and tank pressure gets too high.

The 78 is a stock type replacement, made in USA by Stant.

 

[threadchaser]

Not a stock 1975 USA cap. They have a little valve assembly that allows makeup air into the tank, and will purge pressure if the vent system fails and tank pressure gets too high...

Oh, yeah? That might have something to do with the intermittent smell of gas in the cabin of the FJ40. I will go find out what does remain of that vent system...

 

[threadchaser]

A carb

This carb came in a box with the the 6/72 FJ55 I have been working on. The truck has been in Montana while the carb has been in Seattle for years. Today is the first day I have looked at it in years.

That looks like it would need a complete overhaul before being returned to service but maybe there is enough there to work with. Some screws (for the lid to the bowls, I think), mounting studs, and the thick spacer (with a metal spout coming off it at 45 degrees [EDIT: seems this is called the insulator]) the carb originally sat on can with it.

I have yet to overhaul a Land Cruiser carb, but I have overhauled Celica carbs from the mid-70's; a lot of this looks similar.

It looks much like the pictures that SOR shows for 10/71-9/72:
http://www.sor.com/cat042d.sor

The arm that drives the accelerator pump is a bit different.

The 2F engine I am putting into the 6/72 FJ55 to replace the F engine came to me with a 32/36 Weber on it. I wonder if modified to provide ported vacuum to the 2F's distributor this might not be a better carb for that engine.

https://forum.ih8mud.com/40-55-series-tech/291944-drilling-ported-vacuum.html

 

[threadchaser]

Carb ID

Jim C. explained the carb ID date codes:
https://forum.ih8mud.com/40-55-series-tech/88356-date-code-carb-identification.html

Given that, this carb is a 1973 June 8th build date. The truck is dated 6/72 on the B pillar. So, I guess that means this carb is not the carb that came with the truck.

 

[threadchaser]

Maybe what happened is that someone installed a later OEM carb on the dead F; that would explain why a '73 carb is on a '72 truck. Then later that was replaced with the 32/36 Weber that is on there now.

The following is encouraging. It seems the '73 is more desirable than a stock '72 carb:

http://www.ih8mud.com/tech/carbinfo.php
"Tinkering a 73 or 74 USA TLC carb will provide performance equal to non-USA TLC and webber progressive carbs. Earlier USA TLC carbs were jetted to run on air alone. The aim here is to improve low rpm and part throttle driveability...
Starting point should be one or more 73-74 USA OEM TLC carbs. 73-74 carbs incorporate several low speed/rpm driveability improvements over 70-72 issues."

Interestingly, the author also says "Webber progressive carb is better than OEM TLC carbs."

I think my plan is to get the replacement 2F engine running with the Weber 32/36 that is already wired up on the 2F engine, then later get this '73 OEM carb back on-line with a complete rebuild. Rebuilding it first would just delay the date that the engine first runs.

 

[threadchaser]

Carb insulator

This is the carb insulator found in the box with the Aisan carb which has build date code of "3 F 8".

110mm x 70mm x 17.5mm. The 17.5mm includes the thickness of two gaskets.

 

[threadchaser]

I just stumbled upon Pin_Head's 7 part video series on how to rebuild an Aisan carb. That should come in handy.
http://www.youtube.com/user/PinHead0001/videos

 

[Delancy]

I just stumbled upon Pin_Head's 7 part video series on how to rebuild an Aisan carb. That should come in handy. http://www.youtube.com/user/PinHead0001/videos

Very useful contribution.

 

[threadchaser]

An air cleaner housing

I found this air filter housing in my parts stash. I wonder if this wouldn't be better on top of the 2F's current Weber 32/36 which has a stock air horn adaptor. The 2F came to me with a Weber 32/36 and a stock FJ60 air filter housing.

Unfortunately, that FJ60 housing hits the under side of the early FJ55 hood that the 2F is being installed under. After a derusting and paint job, maybe this is a potentially superior (and retro) solution. Long term this certainly looks like it would be perfect for the '73 OEM carb which it sure seems to fit. First hand, I've never seen one of these housings installed.

So, maybe I can put this old school air filter housing on top of the Web 32/36 now, and later it will also fit the '73 OEM carb.

But maybe that doesn't match reality.

 

[PabloCruise]

Sounds like it could work and not molest your hood any further...

 

[threadchaser]

F air cleaner on 2F engine

Looks like this is very doable but expect fitment hassles.

https://forum.ih8mud.com/40-55-series-tech/786254-air-cleaner-assembly.html
65swb45: "The possibility of breaching the head gasket while the two forward head bolts are loosened for the installation of the early air cleaner bracket does exist. Every time I do one at the shop, I have the customer sign a waiver before I start."

https://forum.ih8mud.com/40-55-series-tech/39346-original-air-cleaner.html
65swb45: "It's actually a SUPERIOR filter. Twin gaskets [top and bottom] on the filter and a third where the a/c and the carb meet. They actually seal better than the 75 and newer."

Man-a-fre has kits for Webers into various Land Cruisers:
http://www.man-a-fre.com/pa/webercarburetorkits.htm

Looking through those it seems that to put the F air cleaner on the Weber would require their WEBER 1F Air Cleaner Adapter aka WEBER Clamp on Throat Air Cleaner Adapter $27.95, part #99010.743
http://www.man-a-fre.com/parts_accessories/WeberCarburetorParts&Accessories.htm

 

[PabloCruise]

Sounds like a good time to install, while you are building and before teh head gasket gets torqued.

 

[threadchaser]

F enging carb rebuild kit

SOR has a set of dates for the OEM carbs, with lots of pictures for ID'ing them.
http://www.sor.com/cat042d.sor

Cruiser Outfitter has rebuild kits for those carbs.
http://cruiseroutfitters.com/engineparts.html

Note that the dates do not correspond exactly across the two above linked to tables.

 

[threadchaser]

I like where these carb and air cleaner options are leading. Here's a good example of someone having put the F carb and air cleaner on a 2F.

https://forum.ih8mud.com/showpost.php?p=5075353&postcount=14
Dusty 66: "1978 2F W/oil cooler... 1F 2 BBL Aisin carburetor and air cleaner"

 

[Pighead]

It's easy to put an F carb and air filter on a 2F block...just use an F intake manifold.

 

[FJ40Jim]

^Agreed w/ the Pig^

Interestingly, this pic from Dusty shows the F carb and aircleaner, but with a 2F manifold, which puts the carb 10-20mm (don't remember exactly) farther out from the cylinder head. I never actually tried to put them together, but apparently the change in carb position is small enough to be absorbed in the slop of the mounting holes. Good to know!

 

[threadchaser]

Thanks for the heads up. I will keep the F intake manifold in my parts stash, which otherwise I would have thrown away.

I think the simplest and fastest way to a running engine is: just get the engine running with the current 32/36 Weber and the silly little rectangular filter currently sitting on top of it (no fitment issues there); then add the F air cleaner and carb later after they get overhauled.

Here's some other good ideas relevant to mixing F and 2F carbs, engines, intakes, and air cleaners:
https://forum.ih8mud.com/40-55-series-tech/20531-2f-air-cleaner-f-carb.html
65swb45: "Classic cruisers ps kit calls for an early air cleaner relocation bracket that rotates the canister as it moves back from the forward cylinder head bolt."

https://forum.ih8mud.com/40-55-series-tech/10555-f-2f-air-cleaner-fitment-questions.html

 

[threadchaser]

Those little air filter elements ("K&N", etc.) that are frequently seen atop Webers just don't look like the best solution. But I stumbled upon this interesting air filters comparison test that give them a pass:
http://www.bobistheoilguy.com/airfilter/airtest3.htm

 

[threadchaser]

Late FJ55 fuel tank

I'm heading back to Montana tomorrow to resume working on the truck. Amtrak train allows baggage of 50lbs and 75 linear inches. I am trying to figure out what to bring with me from my parts stash.

Candidate #1 is a fuel tank from a late FJ55. I'm not sure of the year. I think there were 3 versions of the fuel tank for the FJ55s. The spare tire carrier goes under this one, ergo the oddly shaped bottom. That's the only reason I think this came from a later pig.

I don't even have a tape measure here but it seems to be 37" x 34" x 6". So, that's just a bit over the size limits and I bet the train station would not be happy to see this show up at the counter. Also, I think the aftermarket 30 gallon tank on the truck is good. So, I am just putting pictures here for archival purposes.