EFI conversion worth it?
- Thread starter intense1
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Howdy! You cannot just swap on the EFI system. The heads are different, and then there is a bunch of electricals. John
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I thought that the 22r and the 22re had the same head. And Im aware that the harnesses are completely different. So IF I got all the working hardware off of that truck, I'd still have to get a new EFI wiring harness. Thoughts?
Pretty sure the head is not the same. Plus you swap dizzies. Change to hi pressure fuel pump, intake manifold heater system, computer. I really like the EFI on my 85, but I have a neighbor that says his 85 carbed works just fine. I'd guess the biggest difference is cold starts/run and flying upside down. John
Off Road Solutions - Engine Conversion Parts
Longevity:
I have seen cylinder walls in both the EFI and Carbed, at the same mileage. The EFI was without a doubt, noticeably in better condition.
Power:
The EFI has without a doubt, more power. And it is all across the power band, usable at any RPM.
Fuel Mileage:
The EFI without a doubt, gets better mpg.
Dependable:
IMO, both Carb and EFI are dependable. But we're not talking about the average, bolt-on EFI here. We're talking about mostly Toyota EFI. It's relatively rare for a Toyota to have any problems in the electrical area. And if the wiring harness linked above is as I suspect, it will have the same diagnostic option as the factory. (at least I hope it has that option)
below is what's know as the multi year head. Some are carb only, some are EFI only, some both. I'll try to get some more pics of various heads I have for comparison.
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I'd do it. Since you have access to the truck get the head, engine harness, dizzy, coil/ignitor, EFI bits, and cowl harness. Shoot, get the gas tank with the pump or just run an external 45psi pump. You will need to tease out the EFI bits from the cowl harness, but it's not too hard if you have a FSM. It will take some time, but it's possible and I think worth it. I prefer my 85 22RE over the 82 22R I used to own.
On an '86? No, it'll swap on no problem.
You'll need a LOT of stuff, including all the wiring from the other truck. BUT Yes it's worth the swap.
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- #9
So. It seems that I should do it. Idk what all I need to take off... Should I just unplug everything off of the engine and see if I can get it out in 1 piece? I know that the ECU is in the R kick-panel... This could take awhile.
Do some searching.. there are some good detailed write-ups of this conversion. The list of stuff that you'll need to get off is loooooooooooonnnngggg....
22R to 22RE swap FAQ - Pirate4x4.Com Bulletin Board
and get yourself a Factory Service Manual if you don't already have one... it's going to be your best friend
Toyota Factory Service Manuals (FSM) - all years - YotaTech Forums
some other info
CAZ's Toyota 4x4 Page - 22R To 22RE Conversion
TOYTECH
Off Road Solutions - 22R Fuel Injection Conversion Harness Instructions
22R to 22RE swap FAQ - Pirate4x4.Com Bulletin Board
and get yourself a Factory Service Manual if you don't already have one... it's going to be your best friend
Toyota Factory Service Manuals (FSM) - all years - YotaTech Forums
some other info
CAZ's Toyota 4x4 Page - 22R To 22RE Conversion
TOYTECH
Off Road Solutions - 22R Fuel Injection Conversion Harness Instructions
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You're probably looking at 40-80 hours of work.... (not including getting all the stuff off of the donor...) If that doesn't sound like fun.... Sell your truck and buy an EFI truck. Or go propane..... 
you could also (gasp) try just putting on an EFI cab....
I think it's worth it. Converted my '86 over and got better mileage and no more stalling off road.