thinking of going from carbys to fuel injection

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squiggle
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Joined: Fri Jan 07, 2011 8:48 pm
My tercel:: 1983 sr5 tercel
Location: bendigo vic australia

thinking of going from carbys to fuel injection

Post by squiggle »

im thinking of going from carbys to fuel injection. once my cars been roadworthy ed at all that crap. at because its a basic toyota engine it should hopefully be really easy.
1975 ta22 celica (rally car project)
1974 ta22 celica
1983 sr5 tercel (first car project was now parts car)
red 1983 sr5 tercel (new first car project)
1995 mitubithusti delica
1995 mitubithusti pajero (upspecing)
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Petros
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My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: thinking of going from carbys to fuel injection

Post by Petros »

What do you have in mind? That is the way I am going, and to a more modern engine design as well in the 4age. The 3ac was obsolete when it was put in production. Everyone else had already had more advanced 16-valve engines with EFI before the 3ac in production, both by toyota's competitors and by Toyota itself. The same size contemporary honda carb engine but out 20+ more hp and was a 16-valve design. The 4af and 4af was already in production at the time the TErcel was getting the 3ac.

I would not try and adapt the multi-port injection to this engine, too much work. The early throttle body injectors are a good bet, somewhere in the archives is instructions to adapt a TBI from a Suzuki swift/Geo Metro to this engine. Your other options are to do an engine swap (or a head swap) with a 4afe or 4age (both have been done before). But both have special problems requiring a custom header, high pressure EFI fuel system and a number of other mods. But I think it is well worth the effort.

Good luck.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)
squiggle
Member
Posts: 44
Joined: Fri Jan 07, 2011 8:48 pm
My tercel:: 1983 sr5 tercel
Location: bendigo vic australia

Re: thinking of going from carbys to fuel injection

Post by squiggle »

OK I've now had a change of mind i now want to put ranchos suspension in with wireless controller because we have it in the delica and its a different car on road and off road now.
1975 ta22 celica (rally car project)
1974 ta22 celica
1983 sr5 tercel (first car project was now parts car)
red 1983 sr5 tercel (new first car project)
1995 mitubithusti delica
1995 mitubithusti pajero (upspecing)
geoedb
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Posts: 25
Joined: Thu Jan 30, 2014 7:01 pm
My tercel:: 88 Tercel Wagon 4wd SR5 6-speed manual
Location: Oakland, CA

Re: thinking of going from carbys to fuel injection

Post by geoedb »

I would be interested in swapping my carburetor (on a 3ac) to fuel injection.
A head swap to a 4**** sounds like more effort than I want to expend.
An engine swap to a 4afe or 4age would be even more effort and expense, considering I've had the engine rebuilt 30,000 miles ago, and the head gasket replaced just out of warranty.
I can not find the thread on the TPI from a Geo Metro / Suzuki Swift. I've searched directly on the site, with yahoo & google, but no luck
88 Tercel Wagon, 4wd, SR-5, 6-speed Manual
89 Dodge Dakota, Longbed, V-6, Auto
96 Dodge Dakota, Club Cab, V-8, 5-speed Manual
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dlb
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My tercel:: '87 sr5, '83 dlx parts car
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Re: thinking of going from carbys to fuel injection

Post by dlb »

welcome, geoedb. i just looked and found this super old thread. didn't read all of it but from the first page, it looks like it might be of some use to you.

https://tercel4wd.com/forums/viewtopic.php?f=4&t=485
geoedb
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Posts: 25
Joined: Thu Jan 30, 2014 7:01 pm
My tercel:: 88 Tercel Wagon 4wd SR5 6-speed manual
Location: Oakland, CA

Re: thinking of going from carbys to fuel injection

Post by geoedb »

Thanks,
I read the tread, lot's of I'd like to.... can I........ Maybe you can.........
But no hard info on carb to efi (tbi) swapouts
If it's possible, and a viable option it should part of the FAQ and linked to definitive info.
I'm smart enough to do it, but not figure out how to do it from scratch.
88 Tercel Wagon, 4wd, SR-5, 6-speed Manual
89 Dodge Dakota, Longbed, V-6, Auto
96 Dodge Dakota, Club Cab, V-8, 5-speed Manual
teranfirbt
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My tercel:: '86 SR5 4WD, 5AFE, lifted rear, 195/70/14 tires
Location: Seattle, WA

Re: thinking of going from carbys to fuel injection

Post by teranfirbt »

I did a completely custom EFI setup on mine using CBR 600 throttles running Megasquirt. There are some pictures in my thread in member profiles, let me know if you have any questions.
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