4AC swap

Don Jorgensen · Post by **Don Jorgensen** » Sun Jun 17, 2007 2:11 pm

I just finished swapping out the 3AC to a 4AC I got from U-Pull-It parts out of an 87 Corolla FWD. Thanks to this forum for a lot of valuable hints and suggestions to make the job go well. I used the 4AC carb as well. It is a little different so I'm still working on getting fast idle of AC and pondering what to do with some extra vacuum ports etc.
Don
http://picasaweb.google.com/don.jorgens ... 6796038450

Post by **ARCHINSTL** » Sun Jun 17, 2007 8:33 pm

Grreat pix!
That is a clean engine!
Tom M.

Don Jorgensen · Post by **Don Jorgensen** » Sun Jun 17, 2007 8:48 pm

Yup it was clean..and that impressed me when I removed it from the donar. The 3AC was spewing oil from the valve cover before I bought him and continued to leak from the distributor o ring and rear main seal. The clutch failed for the previous owner because of this. I inherited oil and residue over the engine compartment and beyond. At this point I think I have the leaks under control knock on my head

Took him for a drive with the Mrs. this afternoon. We pushed the 8,000 ft. continental divide on hyway 550 with full AC and doing 65 mph with pedal to spare. I'm likin it.

keith · Post by **keith** » Mon Jun 18, 2007 5:01 pm

Good job.

forehead_04 · Post by **forehead_04** » Mon Jun 18, 2007 5:14 pm

nice work... looks super clean

tonythayer · Post by **tonythayer** » Mon Jun 18, 2007 6:48 pm

How much did the motor cost you?

Don Jorgensen · Post by **Don Jorgensen** » Mon Jun 18, 2007 7:15 pm

The motor cost $150. This U-Pull-It has a big A frame affair with a chain hoist on car tires that are on swivvel axels. Really handy. They also have a $25 core charge.

tonythayer · Post by **tonythayer** » Thu Jun 21, 2007 9:43 am

That is inspiring to be sure.

jetswim · Post by **jetswim** » Fri Jun 22, 2007 5:19 am

Would a 4AC from a Corolla RWD automatic work in our Tercels?

Mac · Post by **Mac** » Sat Jun 23, 2007 11:06 am

if the FWD card is too much hassle, the 3a and 4a carbs are the same part, by design a carburetor can supply a larger engine (not too much larger, 100cc`s isn`t enough of a difference in our case) with enough fuel because its dependent on how much air is being drawn through it.

jetswim wrote:Would a 4AC from a Corolla RWD automatic work in our Tercels?

totally, i used a RWD SR5 engine from a 5spd, you need to use your 3ac flywheel of the 4ac, so the fact the auto has a tourque converter and flex plate won`t be an issue.

shogun · Post by **shogun** » Mon Jun 25, 2007 12:22 pm

nice clean job, im thinking of going 4ag, but still ironing out the kinks

jetswim · Post by **jetswim** » Mon Jun 25, 2007 10:23 pm

jetswim wrote:Would a 4AC from a Corolla RWD automatic work in our Tercels?

totally, i used a RWD SR5 engine from a 5spd, you need to use your 3ac flywheel of the 4ac, so the fact the auto has a tourque converter and flex plate won`t be an issue.[/quote]
Thanks for the info. So I need to use the 3AC Flywheel and Transmission on with the 4AC. I have an 85 SR5 automatic so i might do this one day!

mcenter · Post by **mcenter** » Mon Jul 16, 2007 9:44 am

I did a 4ac swap this summer from an '86 nova FWD. I too, am having problems getting all the hoses connected so that it will idle properly. The car runs great on the road, other that a vibration that is driving me crazy. I think it is the CV joints, but it might be my junkyard tires (spin balanced) out of round.

Neu · Post by **Neu** » Tue Nov 06, 2007 10:03 am

so any 4ac engine will pretty much work? Fwd or Rwd? or does it have to be a certain year/model?

I'm looking for cheap engines to throw into my 85 tercel SR5.