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 What parts are interchangable in the 4A engines

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kenny727



Posts : 4
Join date : 2015-06-22

PostSubject: What parts are interchangable in the 4A engines   Mon Jun 22, 2015 1:07 am

I'm about to buy an 86 SR-5, so I'm pretty sure it will have the 4a-c engine. I'm looking online for tune up parts and a lot of places only show parts for the 4a-ge

Mostly IM wondering about cap, rotor, wires, intake, maybe 4a-ge parts that will increase performance?
Pretty much everything that's interchangeable between the "4a" engines

Ill have the car in 2 days so Im trying to learn as much as I can
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84hachi

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Car : 1984 Toyota Corolla Sport SR5 (AE86)
Posts : 179
Join date : 2009-04-16
Age : 32
Location : Towson, MD

PostSubject: Re: What parts are interchangable in the 4A engines   Mon Jun 22, 2015 2:59 am

90% of the stuff in this pic are 4AGE. The Alt is 7MGE, the upper rad hose is 7MGE, and the flywheel is 7AFE.



"cap, rotor, wires, intake," are not. Those are 4AC specific.
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kenny727



Posts : 4
Join date : 2015-06-22

PostSubject: Re: What parts are interchangable in the 4A engines   Mon Jun 22, 2015 3:33 am

So same block different head? what about the EFI?
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yellowsnow4free

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Posts : 230
Join date : 2011-09-08
Location : Northern California

PostSubject: Re: What parts are interchangable in the 4A engines   Mon Jun 22, 2015 11:52 am

kenny727 wrote:
So same block different head? what about the EFI?
Pretty much all bottom ends in the Toyota A-series of engines have compatible bottom ends:

https://en.wikipedia.org/wiki/Toyota_A_engine

The heads differ though. I think most of the *AC heads are compatible, but the 4AG and *AF / *AFE heads have differences.

The intake (EFI) and exhaust from a 4AG won't bolt up to a 4AC head.
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84hachi

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Car : 1984 Toyota Corolla Sport SR5 (AE86)
Posts : 179
Join date : 2009-04-16
Age : 32
Location : Towson, MD

PostSubject: Re: What parts are interchangable in the 4A engines   Mon Jun 22, 2015 12:38 pm

As for EFI look to this version of the 4AC. The 4AELU.
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yellowsnow4free

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Posts : 230
Join date : 2011-09-08
Location : Northern California

PostSubject: Re: What parts are interchangable in the 4A engines   Tue Jun 23, 2015 10:50 am

84hachi wrote:
As for EFI look to this version of the 4AC. The 4AELU.
Japan only or something; certainly not readily available in the USA.
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FuzzyFish



Car : 86 Corolla SR-5
Posts : 64
Join date : 2010-11-22
Location : Charleston, SC

PostSubject: Re: What parts are interchangable in the 4A engines   Tue Jun 23, 2015 12:01 pm

Interchangeability based on my personal knowledge between 4A-C, 4A-C, 4A-GE (Early blue top), 4A-FE,:

Top-End parts:
4A-GE - Cam pulleys only
4/7A-FE - Not a single part.
3A-C - Same exact head

Heads:
All - Fully interchangeable provided correct headgasket is used.

Blocks:
4A-GE 3-rib 100% the same
4A-FE 7-rib, lacks mounting points for side brackets that attach to transmission (To date I've had no issue without these at 310k miles, using a 4A-F  block and a 3A-C head)

Bottom-end:
4A-GE - Crank provided an 8-bolt flywheel is used, windage tray (4A-C does not have this!)
4A-FE - Whole assembly is compatible, rod journals are 42mm in later ones vs 40mm. (Note: Noted some claims that some will have 8-bolt flywheels/cranks, have not encountered this yet.)

Accessories:
All - Bracket/accessories can be swapped, locations of accessories are all different. May be fitment issues.
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84hachi

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Car : 1984 Toyota Corolla Sport SR5 (AE86)
Posts : 179
Join date : 2009-04-16
Age : 32
Location : Towson, MD

PostSubject: Re: What parts are interchangable in the 4A engines   Wed Jun 24, 2015 9:21 pm

yellowsnow4free wrote:
84hachi wrote:
As for EFI look to this version of the 4AC. The 4AELU.
Japan only or something; certainly not readily available in the USA.

Hasn't stopped me yet. Has it? lol
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kenny727



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Join date : 2015-06-22

PostSubject: Re: What parts are interchangable in the 4A engines   Sat Jul 04, 2015 4:07 am

Thank you everyone.. I know its been a while ive been working on the car... Its actually an 82 with a 3T engine.. Sad
I joined the 3t forums dosent seem like a lot of people are ever there.
Any forums you recommend?
3t owners here?
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