Thread: My Brake are not good at all! ABS to Non ABS conversion done.

Originally Posted by Spel1

A question about this please. I have just found and purchased a nice clean 91 RRC Vogue SE but with a very broken ABS system, sounds like the pump or accumulator or whatever, it doesn't work, makes a racket, needs replacing. I've decided to migrate all my hard work and good parts from my well worked D1 to this vehicle, starting with the brakes. My question is regarding the calipers - I am going to use my D1 master and previously rebuilt calipers, but with the vented discs of the RRC per the forum suggestions to make the single line calipers work with the D1 master - I understand the insertion of the RRC spacer to make this possible, but the question is - are the halves and spacers re assembled dry or with any kind of sealant between the spacer and the caliper halves? In some earlier different posts, there were some warnings not to separate the caliper halves for some reason. Wondering what the problems might be. Should I migrate the solid discs instead and leave the calipers alone?

Thanks in advance.

The spacers contain rubber seals. I've since worked out that aftermarket spacers are supplied with two extra seals suit standard calipers and genuine spacers have their own peculiar seal. It should be possible to buy these seals through someone like Roverlord on the forum. You may get away with reusing the seals in the spacers if they are in good condition, that risk is yours.

The other method you can use is to retain the RRC vented calipers, buy new seals for the pistons and re-use your pistons off the D1 if you have to. Mind you splitting the calipers is the only easy way to replace the seals as you can tap the retainers in with a socket. You will need to plumb a couple of tee pieces into the lines at the master, so that the double lines are fed by the single ports on the D1 master. It's what I did when I didn't have time to arrange a couple of vented D1 calipers in advance.

You'll also find it easiest to re-use the RRC steel lines and fit the proportioning valve near the master cylinder. Fit the D1 rear diff tee and use only one of the steel lines running to the front. The rear RRC tee can be drilled through to make a 4 way tee to use up all the RRC front pipes if you stay with the twin line calipers. It looks untidier than using single line calipers but it certainly works just as well.

Then all you'll need is two short lines from the master to the proportioning valve and you're good to go. I did the last conversion in someone's driveway inside 3 hours, there was a donor D1 round the back to get all the fittings off.

Thanks BeeUtey.

I do prefer to keep things tidy and I will have the single line stuff on hand, I also really want to use the braided stainless lines I already have for the single line calipers, no point buying stuff twice - my biggest concern was sealing the two donor caliper halves to the spacer not having done that before. I will try and get some new seals for this before I start the work. Thanks also for the other related info. Simon