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REVISED DIY brake upgrade


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so what i need st185 calipers.. 318 bmw disc's.. but i dont understand what i need to modify to make them fit ?

kurt

hi

there is no modification needed it all fits on like an OEM set-up

the only engineering required is a shim/ washer under caliper mount because of miscalculation in measurement &a spigot adapter to centre disc on hub

does this make sense

lyle

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really would like to give this a go but it looks so complex! wat do you mean by make a donut and this part :

machining tip :machine to press on hub &it stays on hub when you remve disc or machine to press in

disc

after trial fitting new parts I found I had mis calculated the hat/offset by 3mm no biggy I just

can anyone do this or is it something a specialist would need to look at?

cheers josh

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really would like to give this a go but it looks so complex! wat do you mean by make a donut and this part :the spigot on hub &disc are different sizes so machine a donut up to centre the disc

machining tip :machine to press on hub &it stays on hub when you remve disc or machine to press in make the spigot adapter to fit tight on hub or disc so if you take disc off the adapter stays on the hub or it comes offwith the disc

after trial fitting new parts I found I had mis calculated the hat/offset by 3mm no biggy I just shim out the caliper to centre on disc i used a couple of thick washers &longer mount bolts

can anyone do this or is it something a specialist would need to look at? i have a small lathe so i make my own stuff but any engineering shop can do it

hope that clears things for you

cheers josh

hi josh

really would like to give this a go but it looks so complex! wat do you mean by make a donut and this part :the spigot on hub &disc are different sizes so machine a donut up to centre the disc

machining tip :machine to press on hub &it stays on hub when you remve disc or machine to press in make the spigot adapter to fit tight on hub or disc so if you take disc off the adapter stays on the hub or it comes offwith the disc

after trial fitting new parts I found I had mis calculated the hat/offset by 3mm no biggy I just shim out the caliper to centre on disc i used a couple of thick washers &longer mount bolts

can anyone do this or is it something a specialist would need to look at? i have a small lathe so i make my own stuff but any engineering shop can do it

hope that clears things for you

lyle

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sort of get it now! if i was to buy the disks calipers and all the stuff that dosent need machining , how much would you charge to machine up a donut whatever it is? im just useless at stuff like that lol but if i can get the bits ready so it will all just bolt on id probs give it a go :p

cheers for the info!

josh

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As I understand it. The calipers are from a celica GT4 st185, and so are the pads. And the discs are from a BMW e30 318 (260mm and bolt patterns are 4x100mm, disk thickness 22/21mm, vented)

Is this correct? The part number for the dics, is it for original discs or some other make?

I am, maybe going to try this, it all depends on how much I can get the calipers for.

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As I understand it. The calipers are from a celica GT4 st185, and so are the pads. And the discs are from a BMW e30 318 (260mm and bolt patterns are 4x100mm, disk thickness 22/21mm, vented) hat/offset =35mm

Is this correct? The part number for the dics, is it for original discs or some other make?

I am, maybe going to try this, it all depends on how much I can get the calipers for.

rda make the disc `s in australia so what ever co you have over there should be able to cross reference them to there part no

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You need to have a centre ring made up (this isnt easy for everyone) for the disc as the hub carrier on the starlet is 55mm and the BMW IS QUITE larger. Doing it this way you dont need a back spacer BUT you need someone to machine that ring in the middle, which isnt easy for everyone to get done.

And you HAVE to use this centre spiggot spacer with this option, if you dont the outcomes of not using it will be far worse than if you just use larger studs and a spacer.

I guess thats the trade off.

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