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NAII 4spd transmission into NA 

 

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 Post subject: NAII 4spd transmission into NA
Posted: Wed Jan 30, 2013 3:01 pm 
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Hi

does anyone know if the transmission in the NAII 4spd Auto will fit into the NA in place of the 3 speed without changing ECU and wiring harness and all?

Regards

Barry

 

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 Post subject: Re: NAII 4spd transmission into NA
Posted: Wed Jan 30, 2013 4:11 pm 
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Should do. Just as long as you get the separate transmission control unit from the donor car. I think they are mounted on the pedal box. Of course, you will have to run the auto control loom.

Since the auto is electronically controlled, it will probably need signals from the speedo transducer and the throttle position sensor. If you get all associated wiring from the donor car and transfer to yours, the job will be much easier.

 

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 Post subject: Re: NAII 4spd transmission into NA
Posted: Wed Jan 30, 2013 4:27 pm 
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Keeps a close eye on this thread as when my 3 speed dies i will be doing this
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 Post subject: Re: NAII 4spd transmission into NA
Posted: Wed Jan 30, 2013 8:16 pm 
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It mightn't fit in the trans tunnel - EA/NA/DA 3 speeders might've gotten the XF style tunnel.
Somebody might be able to confirm.

In that case, an EA 4sp or later tunnel section needs to be welded in, or fit a T5 manual.

More reading:
ford-4l-and-6-cylinder-f1/4l-xf-sedan-t37719.html
ford-x-series-f29/au-ba-engine-and-trans-in-an-xf-t43648.html

I guess too the engine might be CFI - so if you're swapping looms, might as well go MPEFI. IIRC, a few have done it on here.

 

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 Post subject: Re: NAII 4spd transmission into NA
Posted: Wed Jan 30, 2013 8:23 pm 
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it should fit, but the body dont have the mounting point for the 4 spd auto gearbox x member.
the 5 speed manual and 3 speed auto x member mounts aprox 2" further forward from memory, compared to the 4 speed auto, and as the 4 speed had not been used in series 1 the mounting area is not there...those that have seen under a ea2 /eb ect will know what i mean, 2 sets of mounting points...
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 Post subject: Re: NAII 4spd transmission into NA
Posted: Wed Jan 30, 2013 8:42 pm 
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I know what you mean about the 2 sets of mounting points, Troy. There are 4 off M10 bolt holes for transmission cross members on EBII. When I did the manual conversion the EA crossmember was waaaaay too wide, so I ended up flipping the auto one around backwards and it fitted perfectly.

 

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 Post subject: Re: NAII 4spd transmission into NA
Posted: Wed Jan 30, 2013 8:46 pm 
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Image

You can see the 'spare' holes behind the crossmember.

 

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 Post subject: Re: NAII 4spd transmission into NA
Posted: Thu Jan 31, 2013 11:43 am 
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Ok I will have a look under tonight at the mounting points and see if I have the same mounting holes as in the picture above

 

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 Post subject: Re: NAII 4spd transmission into NA
Posted: Thu Jan 31, 2013 12:35 pm 
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Even if it dont, it can still be fitted it will just Need some x member work to support the box
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 Post subject: Re: NAII 4spd transmission into NA
Posted: Sun Feb 24, 2013 3:45 pm 
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I happen to have an NA with a 4 speed, so yes they do fit, but be careful when looking for a 4 speed as they can be problematic. (changing at wrong time, getting stuck in limp mode etc.)

 

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