F-to-2f motor conversion... Please Help Me...

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Sep 5, 2006
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I am removing my F motor to put a 2F motor into my 74 FJ40... What I need, but cannot seem to find is a list of the parts that I will need. Clearly I am not savvy with motors... But if there is some kind of compilation of parts that I will need to buy to have this done, please let me know how I may find it. Sorry if this is a re-post... I seem to be as worthless with the search function (been looking for 3 days) as I am with motor mechanics and general engine knowledge... For a bit of what I don't want to know, a guy at SOR told me I had to replace my existing clutch, which, to my knowledge was recently replaced on the vehicle... Any real help will be greatly appreciated. Thanks for looking!
 
I never got an official greeting so i'll start you off with one,
WELCOME TO MUD :flipoff2:, it's the best TLC forum.

well I'm a rookie myself but from what i know, you need to find 2fmotor of your choice and it's a direct one for one exchange. Take out the fmotor and bolt up the 2fmotor. I haven't done this myself, at least yet, i'm waiting for my Fmotor to go out first. Golden rule
" if it's not broke then don't fix it". oh yeah the clutch is different as well, a diaphragm one vs. the old style 3fingers design.

I'm got an idea, check this site out .......I've got most of my fact from here:
http://www.marksoffroad.net/FAQ.html

Great guy plus he know a s***load about cruisers......
everyone out there has good experience and knowledge and sharing is what it's all about...
have a good one!!!
 
keep your clutch but change the clutch disk, and check the flywheel. the 3 finger(e-74)PP have more mass on the outside edge so they lug along more
 
F to 2F

Howdy,
Most of the parts are interchangable in my experience. I have a '76 FJ40 with a '71 F engine block, 2F valve cover, harmonic balancer and water pump bolted up to the original '76 4speed and t-case. I have the newer stlye clutch and pressure plate. I don't know if my flywheel is origianl F or 2F so I can't say if the pressure plates are interchangable. There are no modifications to my engine mounts other than they are from the original 2F bolted on the F block. I hope this helps.
 
May of 2005 I did this very swap in my 9/74 Fj-40. The late '74 had a f155 F engine mated to a 4-speed (at least mine was). The 2F I used was from an '84 Fj-60, so the cooling fan was the 7 blade type, with a clutch and a very complicated carb. My original clutch was newly installed by PO, so I didn't change it. It was the diaphragm type though already. The engine mated to the tranny perfectly. I did have some problems with the engine mounts as I wanted to use the Fj-60 engine mounts cuz the mounts also have mount for the compresor (A/C). It was a tight fit, and I eventually had to take the compressor off(Tha's where the battery sits, stock). I also re-used the linkages for the throttle(original setup). It was a bit tricky to redo but doable, with no extra parts. The only place I had issues was with the cooling fan. The F motor had a solid 4-blade metal fan attached to the water pump. The 7-blade fan is larger in diameter. For a while I ran no fan shroud (never had cooling prblems). Ifyou look at old posts of mine though, I had problems with the plastic fan flexing in water crossings and hitting my radiator. I ended up trimming the fan and placing my existing fan shroud back on(no cooling problems yet / 9 months). Took me two days to the swap with the help of a friend to place the engine/tranny/transfer in in one peice. I think the most difficult part was trying to stab the tranny into the engine, and that was with everything out! Anyway, to your question. I used no other parts than what came with the engine.
 
Howdy,
I don't know if my flywheel is origianl F or 2F so I can't say if the pressure plates are interchangable. .


they flywheel are not interchangable its either e-74 or post 74 for both PP and flywheels
 
I think Rgers is trying to say the pressure plates are not interchangeable without their matching flywheel. there are two styles of clutch available, a 3 finger coil spring or a diaphragm. You can reuse your early (3-finger) clutch, but you have to reuse everything as a matching set: flywheel, pressure plate, release fork, TO bearing, etc.

Basically, the easiest way for you to do this swap is strip the 2F down to a longblock, then bolt on the F manifolds, carb, alternator, bellhousing, flywheel, clutch, etc...
 
I think Rgers is trying to say the pressure plates are not interchangeable without their matching flywheel. there are two styles of clutch available, a 3 finger coil spring or a diaphragm. You can reuse your early (3-finger) clutch, but you have to reuse everything as a matching set: flywheel, pressure plate, release fork, TO bearing, etc.

Basically, the easiest way for you to do this swap is strip the 2F down to a longblock, then bolt on the F manifolds, carb, alternator, bellhousing, flywheel, clutch, etc...



exactly i have a way of messing up words
 
IMHO, I would pull your tranny and t-case along with the engine. When I did my motor swap, I tried to just leave the tranny/t-case in place and mate the motor up to it after it was sitting in the compartment. Not impossible, but definitely a PITA to get the tranny lined up with the output shaft.
 
Thanks a ton for all the help. This is already less intimidating... I figured the way I would go about it was to pull the F, then put in a longblock 2f... Bolt up the manifold, fan, clutch assembly, but change the alternator, maybe the distributor, carb and brake m/c, which needs to go anyway... Am I wrong in thinking this would probably work alright??
 
As I recall, after doing this swap like 12 years ago, or more.

Differences I encountered were. Engine ground worked differently, coil setup as in separate ballist resistor mounted to the outside of the original 72 coil, different on the 77 2F, I did remove all emmission components, fan shroud required trimming, alternators differed. The slave cylinder may have changed sides later. I had a hard time nailing down the OEM water pump as I recall, from Toyota. But then my 72 had been jerry rigged prior to my obtaining it too.

I guess it depends on exactly what you have and mix.
 
I am preparing to do the same thing but the body is coming off too so that will make things easier. I was able to score a long block from a friend. I have a 4 speed in my '71 so I have no idea what clutch/pp/FW combo I am running. Looking forward to finding out.
 
Brian,

Would it be a better idea to just have a ring job and tune-up done on the existing F to get it to stop leaking oil and a bit smoother? I am on a bit of a budget...
 
Brian,

Would it be a better idea to just have a ring job and tune-up done on the existing F to get it to stop leaking oil and a bit smoother? I am on a bit of a budget...

Just my $.02, but every time I've done any "bolt in swap" it's ended up with an entire teardown and rebuild of whatever whole system I'm working on. That said, I am a bit thorough about things as I really know too little to just get by with the minimum. I swapped a 2F into my 66 and changed the tranny(which I rebuilt) to a 4spd at the same time. I kept the three speed style t/c and clutch (which was also totally rebuilt) My swap is not exacly the same, but the principle of "do it right once" is still sound. You are smart to be here getting the info you need to make good choices! My advice is that unless you're ready to take it all on, fix what you got if it will do the job and satisfy your needs. Any changes seem to make more changes, and so on... A real fun way to go if you have the time, cash and desire to learn what it takes. Welcome to the board, from another rookie...
 

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