I searched but didn't find the nugget I'm looking for. I'm fixin' to swap a '79 2F into my '78 and I'm working on the list of goodies I'll need to address on the new motor. The little heat sensitive spring in the middle of the fan looks like it might be supposed to be held in place with 2 rivets, but now it will spin about one turn in either direction before stopping. Is this play supposed to be there? My current motor is an F so I don't have anything to compare it to. Thanks!
Fan Clutch Question
- Thread starter VTGreg
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
1911
chupacabra
No, the play should not be there. The coil needs to be fixed in place (by the two rivets) for it to work properly.
I 've done this vary swap. If you are keeping the 79 carb and fuel pump you might want to use a return line to the tank. I believe I used a 78' fuel pump to do this. I desmogged my truck. I would highly recommend pulling your head, replacing the gasket and possibly having the head checked out by the machine shop.
Do a compression check first!!! If you've good numbers you may be ok. Check you oil cooler for leakage and put in a new pan and rear main seal before (and side cover)you install this engine regardless of whether or not you pull the head. I bought all new toyota gaskets from the dealer (w/ TLCA discount), you might want to call CDan and get these ordered. My fj is the only truck I own that doesn't leak oil!
You might be able to get by with out doing this stuff but you'll kick yourself for not taking the time and money to do it know with the engine out. I have a hard enough time working on that thing in the engine bay, being 5'7" sucks with a lifted truck and tires, but even without the lift and tires it's a stretch to work on that engine. It's nice to work under though!!! good luck feel free to pm me if you've got questions. I might be able to help you with the wiring should you have any issues. the worst one was really only the temp sending unit. The carb and head both have one. Wiring for the smogg systems would be a challenge I believe so I dumped the emissions for space, power and symplicity
Do a compression check first!!! If you've good numbers you may be ok. Check you oil cooler for leakage and put in a new pan and rear main seal before (and side cover)you install this engine regardless of whether or not you pull the head. I bought all new toyota gaskets from the dealer (w/ TLCA discount), you might want to call CDan and get these ordered. My fj is the only truck I own that doesn't leak oil!
You might be able to get by with out doing this stuff but you'll kick yourself for not taking the time and money to do it know with the engine out. I have a hard enough time working on that thing in the engine bay, being 5'7" sucks with a lifted truck and tires, but even without the lift and tires it's a stretch to work on that engine. It's nice to work under though!!! good luck feel free to pm me if you've got questions. I might be able to help you with the wiring should you have any issues. the worst one was really only the temp sending unit. The carb and head both have one. Wiring for the smogg systems would be a challenge I believe so I dumped the emissions for space, power and symplicity
- Thread starter
- #4
Thanks for the offer to help, I may very well pick your brain as I get further into this. I also have a '76 parts rig (yep, the yard is filling up) from which I plan to use the carb, fuel lines, etc. The '79 came with a Rochester carb that looked like a family of badgers had been living inside, so I didn't bother trying to start it. When I did a cold & dry compression check it ranged from 155 to 170. I didn't see any evidence of leaking around the pan or rear main seal but I planned on replacing those items while I had the motor out anyway. I didn't see an oil cooler under there though - was this standard on all '79's?
If you are going to use the fan clutch, you'll need the larger shroud also. It has a larger fan opening and is held in place with 7 bolts, not the usual 6.
GL
Ed
- Thread starter
- #6
Thanks Ed. Just took a quick peek and the shroud that's on my '78 now has 7 bolts so I should be good to go.
Cool, then you are all set on that aspect. Now about the clutch, my advice is to get a used OEM (or new if you want to pony up) rather than an aftermarket one. I have compared them side-by-side and the aftermarket ones are mucho smaller. You should be able to get one from a salvave yard pretty cheap.
GL
Ed
- Thread starter
- #8
Yeah, a clutch is definitely on the list. My old clutch shuddered like a dog sh&%^$#g razor blades every time you let the pedal out. Hardly confidence inspiring. Thanks for your thoughts, I'll be posting up plenty as I work through this.
