Omega Owners Forum

Chat Area => General Car Chat => Topic started by: P6UL K on 28 May 2015, 19:45:44

Title: Gearbox swap... AR25 to AR35
Post by: P6UL K on 28 May 2015, 19:45:44
Has anyone done this swap recently? Is the guide (http://www.omegaowners.com/forum/index.php?topic=96629.0) up-to-date and easy to follow?

Going to be doing the swap in my mates garage and I can do without any niggles! So i need to make sure i have all the necessery parts required otherwise he'll have a non-mobile Omega in the way and i won't be very popular!!

Any hints or tips? Jpat dont sell the brass thrust washer any more as mentioned in the guide.
Title: Re: Gearbox swap... AR25 to AR35
Post by: Varche on 28 May 2015, 22:32:42
Do you need the washer for the AR35?

Tips. The boxes are heavy and have potential to injure if you aren't careful. Two strong blokes shouldn't be a problem.

Make sure you have disconnected the wiring loom from the box. There are several connectors mounted unhelpfully above from memory.
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 28 May 2015, 22:36:56
Do you need the washer for the AR35?

Tips. The boxes are heavy and have potential to injure if you aren't careful. Two strong blokes shouldn't be a problem.

Make sure you have disconnected the wiring loom from the box. There are several connectors mounted unhelpfully above from memory.

I have no idea if i need the washer or not, just thought i should have one 'just in case'

Myself and another burley mate will be using a gearbox cradle so shouldn't be too bad....

My only issue is that the 'Guide' doesn't seem to indepth and more of an overview?
Title: Re: Gearbox swap... AR25 to AR35
Post by: Varche on 28 May 2015, 22:52:56
Is the gearbox you are putting in a known working good entity?
Title: Re: Gearbox swap... AR25 to AR35
Post by: VXL V6 on 28 May 2015, 23:04:48
Need to swap the bell housing if your fitting one from a petrol vehicle to a diesel
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 28 May 2015, 23:07:06
Is the gearbox you are putting in a known working good entity?

Apparently so, I bought it off of SJC on here
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 28 May 2015, 23:08:07
Need to swap the bell housing if your fitting one from a petrol vehicle to a diesel

 I believe the gearbox I have just bought came from a V6, so is it just the Bell housing I need to swap? What talk converter should I use? The one from the V6, the AR25 or the 35?
Title: Re: Gearbox swap... AR25 to AR35
Post by: Kevin Wood on 29 May 2015, 09:22:53
The TC is very dependant on the engine, so it must match the engine you are fitting to.
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 29 May 2015, 09:29:32
The TC is very dependant on the engine, so it must match the engine you are fitting to.

F/L 2.5TD
Title: Re: Gearbox swap... AR25 to AR35
Post by: Kevin Wood on 29 May 2015, 09:31:13
The TC is very dependant on the engine, so it must match the engine you are fitting to.

F/L 2.5TD

You need to keep the TD torque converter then. :y
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 29 May 2015, 09:44:39
The TC is very dependant on the engine, so it must match the engine you are fitting to.

F/L 2.5TD

You need to keep the TD torque converter then. :y

So TD torque converter and bell housing swap and that's it...? Sounds to simple lol
Title: Re: Gearbox swap... AR25 to AR35
Post by: Marks DTM Calib on 29 May 2015, 09:58:31
Yes that's it, keep the torque converter and bell housing then fit the AR35.

You MUST make sure you unbolt the torque converter from the flex pate BEFORE removing the gearbox and when refitting ensure the torque converter is fitted to the new box and fully seated before offering the box back up to the engine.
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 29 May 2015, 10:26:05
Yes that's it, keep the torque converter and bell housing then fit the AR35.

You MUST make sure you unbolt the torque converter from the flex pate BEFORE removing the gearbox and when refitting ensure the torque converter is fitted to the new box and fully seated before offering the box back up to the engine.

Brilliant info Mark, thank you! Is there anything I should be concerned about with the torque converter? Anything serviceable on it?
Title: Re: Gearbox swap... AR25 to AR35
Post by: Marks DTM Calib on 29 May 2015, 13:30:09
Sealed unit and to be honest, they just don't go wrong unless they are crushed due to not following the above advice  :y
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 29 May 2015, 13:50:32
Fantastic! I can't wait to crack on now!
Title: Re: Gearbox swap... AR25 to AR35
Post by: P6UL K on 09 June 2015, 20:38:15
Just done the gearbox swap and all went swimmingly apart the selector rod that goes from the bottom of the selector to the gearbox switch is to long!! It's almost like its 2" too long! The holes won't line up and we've tried lining it up in all gears and the elongated hole just won't line up! Very annoying!

Are the bars different between automatic Omegas?