big brake set up

[pockrockgtti]

### Sticks neck out for health and safety reasons! ###
pockrockgtti is 100% right, a 60mm disc bore on a 55mm hub is unsafe.

Thanks for reiterating and expanding on what i said earlier.

To the rest of you, if youre looking for a cheap brake upgrade, do go down this route. Just make sure you do it properly, get a spigot ring made and get the disc centered correctly!

 

[Paul_JJ]

jay would you think the twin pots a better option over the big single?

I read somewhere that single pot is better... I think that was subaru forum - but do a google research you will find a lot of different point of views!

 

[Paul_JJ]

Yes matey, Any uk spec st185 gt4

Any chance to give links where did you buy the calipers/discs/pads -) and all the other bits! SO it's 277mm discs then? nice upgrade over a stock 255!

 

[jayc-glanza17]

in braking force johnny the twins are a lot better then the stock single, and fade didnt happen around brands hatch in a 20 min session on track, as did before with stock calipers and yellowstuff pads, so the twins fade a lot less with their blueprint pads in.

now guys braking torque which equates to how much power the brakes can generate, was recently calculated on an all-trac owners site in the US,
and the single later spec st185 single which is 57mm piston does generate more force then the previous twins, but only by 2.4% over the st165 twins.

now also when i read on this site they spoke about fade as well, and these guys have tried both etc and found thet fade was very minimal between the pair.

now the extra force of the 185 single is down to the larger discs n diameter 277 which has a slightly larger pad surface area.

st165 twins can be found on early uk spec celica gt4's st185 upto 1992 i think maybe 1991.

it took me two months to reaearch both set ups and learn bout them, any questions then please do feel free to PM any questions.

jay

 

[Johnny_C]

what calipers are on the 93 st202?
belive they are single pots,but want to know if they are the same as st185s?

 

[Texx]

what calipers are on the 93 st202?
belive they are single pots,but want to know if they are the same as st185s?

The ADL Blueprint part numbers are different and going by the photos in the ADL catalogue, both calipers look different.

 

[Johnny_C]

The ADL Blueprint part numbers are different and going by the photos in the ADL catalogue, both calipers look different.

bugger,cheers terry!

 

[jayc-glanza17]

to confirm they are different matey.
st185 is a 57mm piston single and st202 is 51mm piston single.

 

[Keri-WMS]

to confirm they are different matey.
st185 is a 57mm piston single and st202 is 51mm piston single.

Where did you get the 51mm / ST202 info from? New one on me that, even the weedy AT200 (1.8) has a 57mm piston as far as I know!

 

[Johnny_C]

Where did you get the 51mm / ST202 info from? New one on me that, even the weedy AT200 (1.8) has a 57mm piston as far as I know!

would the 1.8 have the same caliper then??

 

[Keri-WMS]

would the 1.8 have the same caliper then??

The normal convention is for bigger pistons on bigger engined cars, so a 57mm caliper piston 1.8 AT200 and a 51mm caliper piston 2.0 ST202 would be really odd both being Gen 6's. The fastest Gen 6 (ST205) has 4x 40mm pistons, giving an effective area the same as the 57mm single slider ones (+/- a couple of %)


The calipers won't be exactly the same as far as the specs I can see show, because the AT200 has a 255x25 and the ST202 is 275x28.

 

[xx YICK xx]

The st202 does have a 57mm piston, The differences between the set up are the carriers. The st185 & 182 calipers have the sliders built in wereas the at200 etc have the sliders on the carrier, This is where the problem arises as i dont think the carriers with the sliders on mate up to the ep hub

 

[Johnny_C]

im going down this route,anyone know where i could the spigot rings made or where i could buy them?(take it they need to be steel/alloy?)

 

[xx YICK xx]

im going down this route,anyone know where i could the spigot rings made or where i could buy them?(take it they need to be steel/alloy?)

Gimme a couple of days matey, I'll go and see the guy that did the disc work for me, See when he can make them. Alloy will be fine its just to keep the disc central, Mines been running fine without them for months now but i'm gettin some yellowstuff pads this week so i'm gonna get some rings on at the same time (get people off me back lol)

 

[Johnny_C]

Gimme a couple of days matey, I'll go and see the guy that did the disc work for me, See when he can make them. Alloy will be fine its just to keep the disc central, Mines been running fine without them for months now but i'm gettin some yellowstuff pads this week so i'm gonna get some rings on at the same time (get people off me back lol)

if you wouldnt mind,as ive just bought the calipers and may buy the discs 2mro as i want to overall the full brake set up anyway!
cheers!

btw,anyone recommend a good fast road pad for this set up??