Rear discs....

Ceirwan

Ceirwan

Ex. Club Member
I'm wondering how difficult it is to make a rear disc conversion on the K10?
As the rear drums are hyraulically actuated all the piping is there but i'm guessing its the mounting and the hubs that would make it difficult.
Would it require the rear hubs from a K11 with rear discs?
Or is it too difficult to be worthwhile?
 
if you want more breaking power then stick some k11 hubs on the front, vented disks march calipers and that'l be plenty even with more horsepower
 
Kristian's doing this conversion on my car, however the whole axle is being replaced. I know people say there's no point doing something, but it would still be good to see it done! Disks aren't really needed on the rear of a K11, but Nissan still did it, so anything is achievable with the right knowledge / money, so good luck!
 
Well it just seemed a logical thing to do if you wanted to upgrade to better front discs...
The k11 discs if fitted do they give a similar braking perfomance to the K11 or are they better on a k10 then when fitted on a k11? (Due to the cars weight or something?)
I ask because i often get break fade on my k11 brakes.
 
Personally I dont think "horsepower" is the dominating factor in needing breaks upgrade....since horsepower is how quickly you can reach a certain speed...not what speed you can get to or how long you can safely leave it before applying the brakes. If anything it depends on how fast you want to come to a stop from a certain speed...even a stock MA10 can put the speedo needle on the end stop.ie completely minimising your braking DISTANCE at any speed.

With stock front brakes its easiy enough to lock both wheels solid by pushing harder on the footbrake. more powerfull brakes will only give you a better mechanical advantage at the end of your foot.....and locked wheels are not going to help bring the speed down quicker....so then serious wheels & tyres would be required too to get better use of the upgraded brakes.

....having said all that, I can't recall ever locking the rear wheels by using the footbrake..... so perhapse there is something to be gained from such a conversion?

...I think one of the trickiest parts to solve would be how to integrate the handbrake to the rear wheels.....may be there is some off the shelf valve/part that can do this job?
 
Well I know is isn't Micra related, but I know rear disc conversions have been done on MK3 and MK4 escorts, by using Sierra rear discs, pads, and calippers with a custom bracket, maybe there is another nissan which you could use the rear discs off?
 
matt humphries sells a kit for the k11 that should fit the k10. arnold is having the full pulsar rear suspension which is pointlessly extreme for just rear discs.
you just need rear discs and calipers. fabricate brackets for the calipers so they sit with the pads in the right position. new brake pipes, new rear cable if old one cant be used then a adjustable bias valve.
quite easy really just time consuming and expensive.
 
Sammo surely its not about locking the wheels though.
I'd imagine some brakes would only allow you to apply a certain amount of braking force before they give out and have to lock the wheel.
And others allow you to apply more braking force before they lock the wheel.

I.e. on my old bike i had some brakes that could smoothly apply more and more force before they finally reached the maximum traction on the tire and locked it. On my current rubbish bike the back brake will apply a little bit of braking force and then lock the wheel straight away because the pads are crap.
 
the only reason for going to discs rather than drums is heat disipation. drums actually have a lot stronger bite than discs (for the first corner).
because of a micras bias valve very little braking presure actually goes to the rear, an adjustable bias valve is worth playing with but be careful with how much you send to the back because if the wheels lock up your spin your car!
 
I imagine the K11 calipers would be a good option for the rear of a K10. Maybe the whole hand brake mechanism could be replaced too, then you won't have to worry about how to get the K10 one to fit.
 
I didnt realise that. I know ABS was an option as my mums LX came with ABS and discs. I didnt realise they were both seperate options though! Hers is an ex demo car so it came with all the toys.

Edit: Ah so after 98 they were cost cutting ;)
 
Ceirwan said:
Sammo surely its not about locking the wheels though.
I'd imagine some brakes would only allow you to apply a certain amount of braking force before they give out and have to lock the wheel.
And others allow you to apply more braking force before they lock the wheel.

I.e. on my old bike i had some brakes that could smoothly apply more and more force before they finally reached the maximum traction on the tire and locked it. On my current rubbish bike the back brake will apply a little bit of braking force and then lock the wheel straight away because the pads are crap.
Click to expand...

Oh yes!...I diddnt consider that...your dead right....!!!!

I know that this type of behaviour is built into various tyre componds especially on motorcycles....

just like you said:

...one compound gives some slip all of the time slipping gradually more as the forces biuld..

..and others will hold fast untill a certain point and then they suddely give way.
 

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