Hello,
Long time reader of ih8mud but this is my very first public post
I own a 1974 FJ40, originally sold in France and in my family since 76, that I begin to restore. I was thinking that being there it could be a good idea to preventively replace the water pump but here start the question of which water pump to install...
First, I have read a lot of threads here about the subject and I know that the common knowledge is the fan clutch only appeared in 77 or so. But I think this is only true for the US. It seems that in Europe fan coupling was started with the build date 01/1974: Water pump for Toyota Land Cruiser FJ40LV - Genuine parts (my 06/74 master catalog says the same thing)
Part number was 16100-60120 for F engine and then superseeded by 16100-61020 and 16100-61021 for 2F engine in vintages 75' and 76'.
Now back to my story... Because my 74' FJ40 was built in 10/73... so it should have came without a fan clutch at this time.
But in 77 my father suffered a major failure of the cooling system while crossing France and had been stranded for many days in a local garage. From his memory it took forever because Toyota sent multiple times the wrong water pump.
From the original bill they finally repaired the radiator, changed the fan, the water pump and thermostat (not sure of what happened back there but that's really a major failure for a 3 years old truck...). The water pump installed was 16100-61020 from the bill (and 16361-60080 fan) but it's stated in the labor line they had to replace something with the shaft/flange I think (in French: "remplacer moyeu sur pompe neuve" which word to word translate give "replace hub on new pump").
Obviously a fanclutch was also installed as there is one now, I don't know if the fan shroud has also been changed, and what has been done to the spacing of all of that... But it's not stated in the bill while all small details seems to be there like the new hose clips.
This is the better picture I have of it.
One option is obviously to come back to a non-fanclutch F style water pump, but the original cast iron waterpump did not did well back then so not very inclined to go that much stock and mainly I like the fan clutch. It's not always very hot around here and my F.5 engine runs a lot better once hot so if it can help to not have a fan blowing all the time.
Now to keep the fan clutch, will the 16100-61020 be similar to the pump with fan clutch we can still find today or is there a difference? Don't know if something changed in 2F between 76' and 77' as the original superseeding of waterpumps stopped here ?
(to my understanding the choices for a new pump are either a Toyota branded with clutch & oil cooler or a Aisin branded with only clutch)
Will I have to re-do the modification that has been done back then to make it fit or do I have a chance it fit easily?
At least it seems it has been done properly back then as it's still holding today... So no emergency to update the pump but I'd prefer to sort it now when I have time and not some day when it fails on me and I'll need it changed quickly.
Hope all of that make sense...
Long time reader of ih8mud but this is my very first public post
I own a 1974 FJ40, originally sold in France and in my family since 76, that I begin to restore. I was thinking that being there it could be a good idea to preventively replace the water pump but here start the question of which water pump to install...
First, I have read a lot of threads here about the subject and I know that the common knowledge is the fan clutch only appeared in 77 or so. But I think this is only true for the US. It seems that in Europe fan coupling was started with the build date 01/1974: Water pump for Toyota Land Cruiser FJ40LV - Genuine parts (my 06/74 master catalog says the same thing)
Part number was 16100-60120 for F engine and then superseeded by 16100-61020 and 16100-61021 for 2F engine in vintages 75' and 76'.
Now back to my story... Because my 74' FJ40 was built in 10/73... so it should have came without a fan clutch at this time.
But in 77 my father suffered a major failure of the cooling system while crossing France and had been stranded for many days in a local garage. From his memory it took forever because Toyota sent multiple times the wrong water pump.
From the original bill they finally repaired the radiator, changed the fan, the water pump and thermostat (not sure of what happened back there but that's really a major failure for a 3 years old truck...). The water pump installed was 16100-61020 from the bill (and 16361-60080 fan) but it's stated in the labor line they had to replace something with the shaft/flange I think (in French: "remplacer moyeu sur pompe neuve" which word to word translate give "replace hub on new pump").
Obviously a fanclutch was also installed as there is one now, I don't know if the fan shroud has also been changed, and what has been done to the spacing of all of that... But it's not stated in the bill while all small details seems to be there like the new hose clips.
This is the better picture I have of it.
One option is obviously to come back to a non-fanclutch F style water pump, but the original cast iron waterpump did not did well back then so not very inclined to go that much stock and mainly I like the fan clutch. It's not always very hot around here and my F.5 engine runs a lot better once hot so if it can help to not have a fan blowing all the time.
Now to keep the fan clutch, will the 16100-61020 be similar to the pump with fan clutch we can still find today or is there a difference? Don't know if something changed in 2F between 76' and 77' as the original superseeding of waterpumps stopped here ?
(to my understanding the choices for a new pump are either a Toyota branded with clutch & oil cooler or a Aisin branded with only clutch)
Will I have to re-do the modification that has been done back then to make it fit or do I have a chance it fit easily?
At least it seems it has been done properly back then as it's still holding today... So no emergency to update the pump but I'd prefer to sort it now when I have time and not some day when it fails on me and I'll need it changed quickly.
Hope all of that make sense...
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