Steering box swap: Disco II into D90 - Defender Source
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  #1  
Old November 24th, 2008, 04:35 PM
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Steering box swap: Disco II into D90

Can I use a Disco II steering box in the D90?

Is it a straight bolt-in??
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  #2  
Old November 24th, 2008, 05:45 PM
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I don't think so....I have both in the garage and they are pretty different.

I have a box left from my d-90 if you need one, took it out because I ran across a NIB one for a good deal
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  #3  
Old November 24th, 2008, 06:10 PM
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No, but a DI or RRC bolts right in (but uses a different arm).
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  #4  
Old November 24th, 2008, 08:47 PM
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Is the Disco I / RRC box the "same" or better / worse??

How is the arm different....any pics??
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  #5  
Old November 24th, 2008, 10:17 PM
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Same, functionally at least.

Early RRCs have the same style arm with the integral ball joint but it has less drop. 1995 RRCs and DIs have the arm for the drag link with two TREs.
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Old October 22nd, 2009, 01:44 PM
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Can the drop arm from a 95 Disco work on the D90??

It looks like the steering boxes are the same (is that correct)??

I think the drop arm on the 95 Disco does not have the integral ball joint (is that correct)??

Does anyone see any benefit to this if all this is true??
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  #7  
Old October 22nd, 2009, 02:01 PM
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You can use the drop arm, but then you need to swap the drag link too and you would either have to use a disco damper relocation mount to keep the OR use the disco track rod with the damper mounted on it and the bracket that mounts to the bottom of the diff.
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Old October 22nd, 2009, 06:54 PM
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Does anyone have a picture of the disco set up??

Will this bolt together if I replace this with the disco parts??

I am interested in doing this.
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  #9  
Old November 11th, 2009, 11:41 PM
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I'm reconsidering my build now! I was planning on using the axles and all the steering and suspension components from an '89 RR. I bought a new steering box though, simply to have a new one. Everything "lines up", or so it seems. I'm wondering now if I should swap the drop arm on the new box with the old one.. I'll have to take pictures of the two.
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Old November 11th, 2009, 11:48 PM
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switching to the disco drop arm gets rid of the integral ball joint set-up in the D90 and replaces it with TRE style.

i believe the drop arm has less of a "drop" but the link attaches "below" it versus on top like the D90 so it shouldn't change the angles much.
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Old November 12th, 2009, 12:34 AM
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Quote:
Originally Posted by Turbofan
I'm reconsidering my build now! I was planning on using the axles and all the steering and suspension components from an '89 RR. I bought a new steering box though, simply to have a new one. Everything "lines up", or so it seems. I'm wondering now if I should swap the drop arm on the new box with the old one.. I'll have to take pictures of the two.
Drop arm is the same between an 89 RRC and a D90 (or maybe the drop is very slightly less), but to use the D90 damper mount, you need the bracket that goes on the drag link from a defender.
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