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-   -   Is sg and sh gearbox interchangable (https://offroadsubarus.com/showthread.php?t=7589)

skep 17th April 2018 02:00 AM

Is sg and sh gearbox interchangable
 
Gday! just wondering if i can swap my built sg dual range box straight into an 09 sh? absolutely no info anywhere (that i can find) on it???
Cheers.

Rally 17th April 2018 02:14 AM

I believe so. The SG runs 4.1 diff gears, and I believe the SH does too.

skep 17th April 2018 02:40 AM

cheers Rally.
yeah i was pretty sure but then thought they might have had a change in design that year. :iconwink:

NachaLuva 17th April 2018 07:52 PM

Yes they can swap but you might need to change the clutch, you always match the clutch to the gearbox not the engine.

The SG dual range gearbox & SH dual range gearbox should both be 4.111 diffs, but double check that. The single range gearbox from the XT will be 4.44

El_Freddo 18th April 2018 08:53 AM

Quote:

Originally Posted by NachaLuva (Post 100766)
Yes they can swap but you might need to change the clutch, you always match the clutch to the gearbox not the engine.

It's interesting you say that Nacha, I'm running a gen1 ej22 with gen 1/2 flywheel and clutch setup in front of a Gen3/SG phase2 box - works no worries, even with my clutch cable ;)

This box should, in my mind, be a direct physical swap. Differences could be electrical plug connection and diff ratio (of rear diff ).

Cheers

Bennie

duncanm 18th April 2018 10:38 PM

AFAIK, the only clutch difference you need to worry about in Subaru's is the change from push to pull type.

skep 20th April 2018 04:10 AM

thanks guys, appreciate it!
I have just put in a new clutch with the sg box so will transfer that as well with assembly if necessary

NachaLuva 23rd April 2018 07:48 PM

Quote:

Originally Posted by duncanm (Post 100779)
AFAIK, the only clutch difference you need to worry about in Subaru's is the change from push to pull type.

There are also subtle differences in height. They will fit but when you go to change gear, the clutch may not disengage if you have the wrong one

duncanm 25th April 2018 06:54 AM

for clutch / etc compatibility, use something like the exedy clutch finder:
http://www.exedy.com.au/clutch-finder

Both SG and SH 2.5 use FJK-7115 (for a single mass flywheel version).

skep 12th May 2018 06:33 AM

Ah good to know!! thanks for the heads up


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