drum to disc conversion non-sals. - Defender Source
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  #1  
Old September 28th, 2011, 12:24 PM
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drum to disc conversion non-sals.

Is it possible to convert an early 90's rear drum brakes (standard rear axle, non-salisbury) to discs using disco parts without having to swap the rear axle? If so, how much of the componentry should I ask Tillery to send? Transport of an entire axle and fear of tackling the A frame ball joint would make doing the conversion onto the existing axle compelling.
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  #2  
Old September 28th, 2011, 12:28 PM
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way easier to swap in a disco axle than do all that to an old 10 spline. what are you afraid of ?
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  #3  
Old September 28th, 2011, 12:31 PM
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there is no way to mount the calipers to the drum brake axle, unless you are keen on fabrication. Far easier to swap the whole thing. As for the a-frame, it is quite easy (and fun) to get the tapered pin out from the axle, happy to show you how. OTOH, if the joint requires service then you will have to do something about it eventually.

or, you could just leave well enough alone and leave the drum axle in place...

Quote:
Originally Posted by Abrooks View Post
Is it possible to convert an early 90's rear drum brakes (standard rear axle, non-salisbury) to discs using disco parts without having to swap the rear axle? If so, how much of the componentry should I ask Tillery to send? Transport of an entire axle and fear of tackling the A frame ball joint would make doing the conversion onto the existing axle compelling.
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Old September 28th, 2011, 12:39 PM
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All very good points
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  #5  
Old September 28th, 2011, 01:01 PM
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What Ren Ching said ^^^^ no way to mount the calipers; by the time you've faffed about making/cutting some off of an old casing, you might as well just get the complete casing anyway and clean it up and fit.

you can, however, use the parts from a scrap front axle (90/110 disk braked), either the early ones with the longer stub axle and "big" drive flanges/23 spline CV, or the later 32 splined stuff (use the stub axle, main hub and drive flange. use rear discs - they fit on OK, then either the earlier 2 piece rear shafts or the later 1 piece disco1/later rangie classic/D90 rear shafts)
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  #6  
Old September 28th, 2011, 03:54 PM
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swap

Just did a swap on mine a couple of weeks ago- pretty simple and straightforward. I was surprized how cheap I was able to get a complete rear axle.
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Old September 28th, 2011, 03:59 PM
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Did you notice any improvement in braking?
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  #8  
Old September 28th, 2011, 04:51 PM
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Screw the a-frame balljoint and swap the a frame in at the big upper bolts (discos don't have the same mounting style on top, but old RRCs do).
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Old September 29th, 2011, 01:25 AM
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Quote:
Originally Posted by Abrooks View Post
Did you notice any improvement in braking?
Mine had already had discs in the rear- my axle case was falling apart- hence the swap, so no improvement because no change in setup. That being said- I feel like the braking in mine is fantastic. Far better than my '90 Pathfinder with rear drums. I think you'll be glad you did it.
-Gardner
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  #10  
Old September 29th, 2011, 01:50 AM
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Quote:
Originally Posted by Abrooks View Post
Did you notice any improvement in braking?
Braking performance should not be any different. You just get past the need for the manual adjustments.
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  #11  
Old March 5th, 2017, 10:53 PM
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Did you remove or change the brake pressure multiplier/proportioning valve?
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  #12  
Old March 5th, 2017, 11:03 PM
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I was going to ask the same question. Much more volume of fluid needed for drum brakes generally. How do you get around that typically?
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