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 86 4AC-4AC Swap

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Mulchy
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PostSubject: 86 4AC-4AC Swap   Sun Oct 06, 2013 9:21 pm

This week Lou's oil pan on his 86 started to leak and he ended up throwing a bearing. So he bought a new, rebuilt 4AC, water pump, gaskets, etc...
He brought it to our shop to have my dad help us with the swap.  

We're mechanic noobs, so my we needed his help and it's turned out to be a long, awful, trial and error process. We've had a few leaks and things haven't fit quite right, but we're almost done.


Finished the 86 up on Monday, just haven't had a chance to post the pictures, and here they are!

New 4AC







Old 4AC




Junk that was pulled out of the bay, most of it wasn't put back in.  WEIGHT REDUCTION! lol



Engine bay, most if this stuff was removed, there was a lot of unnecessary wiring and the cruise control unit was broken.



Dat 86 doe




My dad explaining how to align a flywheel and clutch plate onto the block properly



Dropping her in!



Setting this back in on the motor mounts was a bitch, also the splines on the transmission didn't want to line up either.



All in! the carburetor filter needed to be put on and tuned.



This is when it started smoking lol





It's all done and I forgot to take a picture of the final product, but it's running and sounds great now!

_
97' Rx-7 FD3S NDH(4:34.656) - CLEAN


Last edited by Mulchy on Thu Oct 10, 2013 6:11 pm; edited 1 time in total
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betadood
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PostSubject: Re: 86 4AC-4AC Swap   Sun Oct 06, 2013 9:35 pm

Why didn't he get a 4AG? And if you need any help there is always http://club4ag.com/forums/viewforum.php?f=8

_


B class (AE86): New Downhill: 4:33.632 New Uphill: 4:51.676
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A class (22B): New Downhill: 4:27.633 New Uphill: 4:38.230
                                               Old Downhill: 3.41.310 Old Uphill: 3.54.605
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Koolaid
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PostSubject: Re: 86 4AC-4AC Swap   Sun Oct 06, 2013 9:42 pm

So he knew it was leaking oil and decided to still drive on it?
Was it cheaper to buy another 4ac than to buy a new head?

But hey, I dont own an 85 and havent swapped an engine out in a couple years, which means i know absolutely nothing about cars L O L

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Mulchy
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PostSubject: Re: 86 4AC-4AC Swap   Sun Oct 06, 2013 9:42 pm

Money was the issue, he needed to buy alot of parts to do the conversion. He only spent about 300 for the rebuilt 4AC and a few other things.

He was about 100 miles away from home so there wasnt much he could do Bukkaz, it actually needed a new egnine anyway. The original was a piece of junk!

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97' Rx-7 FD3S NDH(4:34.656) - CLEAN
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King914
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PostSubject: Re: 86 4AC-4AC Swap   Sun Oct 06, 2013 10:02 pm

god bless hope it runs better but with another 4ac i doubt that ): good luck!

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KraZe
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PostSubject: Re: 86 4AC-4AC Swap   Sun Oct 06, 2013 10:08 pm

What parts are needed to convert a 4AC powered AE85 to a 4AG one?

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Mulchy
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PostSubject: Re: 86 4AC-4AC Swap   Sun Oct 06, 2013 11:08 pm

Idk Kraze, but we have the engine running. The carburetor needs to be tuned and for some reason it's smoking ridiculously bad out of the exhaust. We think it's leftover oil still burning off, or we need to get a new PCV tube. Razz

Other than that it idles smooth and sounds nice.

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97' Rx-7 FD3S NDH(4:34.656) - CLEAN
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King914
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PostSubject: Re: 86 4AC-4AC Swap   Tue Oct 08, 2013 9:42 am

well for one kraze u need the 4ag engine harness since its fuel injected which means u need the 4ag ecu.... most likely a resistor box for the injectors etc thats off the top of my head there could be alot more!

_
B-CLASS EG6 4:35:869 CLEAN NDH.  A-CLASS LANEVO6 4:40:000 NUH
B-CLASS EG6 3:46.290 DIRTY ODH
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Mulchy
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PostSubject: Re: 86 4AC-4AC Swap   Thu Oct 10, 2013 6:13 pm

Pics are up!

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Obelisk
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PostSubject: Re: 86 4AC-4AC Swap   Thu Oct 10, 2013 6:33 pm

Cool 86. Why was there smoke?

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Mulchy
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PostSubject: Re: 86 4AC-4AC Swap   Tue Oct 15, 2013 11:21 pm

Because it was burning off old oil that had gotten into the exhaust, also we forgot to put on a PCV tube lol

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bukkaz
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PostSubject: Re: 86 4AC-4AC Swap   Wed Oct 16, 2013 7:03 am

That wasnt me who said that mulchy that was koolaid and I wish they wouldnt have my profile picture!
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