Upgrading to S-AYC

[Zaino14]

Has anyone upgraded their AYC diff to the S-AYC diff from the Evo 8?

I know that it's pretty much a direct fit with a few small mods, but whats needed in terms of wiring/pump? Do I need to installed the S-AYC ECU and wiring harnesses and is the existing AYC pump suffcient?

Just interested as I may be able to get my hands on a S-AYC diff, but want to know if its gonna be more grief then it's worth.

 

[mezje]

I believe this has done a few times before. Steve from TME can probably guide you.

KaldekBoch (Ed) has a video on the topic on YouTube (Kaldek on OZVR4)

See: Physical differences between AYC and Super AYC differentials - YouTube

 

[Zaino14]

I believe this has done a few times before. Steve from TME can probably guide you.

KaldekBoch (Ed) has a video on the topic on YouTube (Kaldek on OZVR4)

See: Physical differences between AYC and Super AYC differentials - YouTube

Love KaldekBoch's videos, have helped me alot. I'll have to see if I can get some info from either of them.

I'm in no rush to do it, but figured since there is one for sale near me (guy is asking $700) thought it might be worth picking up for a future project. But i guess I'll also need to find out what to look for on the diff itself, don't want to buy one that's just going to die on me.

 

[pretzil]

No changes to ecu. Straight swap once you make a hole for the relocated fill point.
You will need some kind of tool for flushing and bleeding, but same is required for replacing with stock legnum diff.

 

[pretzil]

(definitely $700 is a good price, confirm it's actually a sayc and in good condition though)

 

[Zaino14]

(definitely $700 is a good price, confirm it's actually a sayc and in good condition though)

Thanks! apprciate in the info. Glad its as simple as a straight swap and not having to run a new harness etc.

I think I'll go check it out and determine the condition.

 

[Zaino14]

Guy just sent a picture of diff. Is there anything I should look out in particular for condition?

He said its's from a 2014 Evo 8, low KMs (but everyone always says low kms)

 

[mezje]

Guy just sent a picture of diff. Is there anything I should look out in particular for condition?

He said its's from a 2014 Evo 8, low KMs (but everyone always says low kms)

View attachment 63568

Nevermind was a different diff, similar pics, ignore me...

 

[Zaino14]

Nevermind was a different diff, similar pics, ignore me...

Ah no worries. Was going to say, he has the rest of the Evo 8 which he's wreaking, so I'd be pretty surprise if it was off ebay!

 

[pretzil]

This is what to look for to know it's an sayc.
They moved the fill point but left the old casting for the old location.
I.e. SAYC will have these 2 circles here

 

[Zaino14]

This is what to look for to know it's an sayc.
They moved the fill point but left the old casting for the old location.
I.e. SAYC will have these 2 circles here

View attachment 63577

Ah cool, it's defs is a S-AYC. Was more wondering what to look for in terms of condition, but I guess you can't see much without taking it apart?

 

[pretzil]

Yeah, you can't tell, but price seems good