ST185 calipers

Discussion and technical advice for 84-89 AW10 & AW11 MR2. 3A-LU, 4A-GE, 4A-GZE.

Moderators: IMOC Moderators, IMOC Committee Members

Post Reply
MarcsMR2
Posts: 83
Joined: Fri Jun 23, 2006 5:31 pm
Location: Bristol

ST185 calipers

Post by MarcsMR2 »

Morning,

For Xmas my wife has bought me some ST185 twin pot calipers :D

Only problem is I'm not sure what other parts I'll need for the conversion.

Discs? Carriers? brake lines?

I understand it's a simple swap but would like to be sure before I jump in lol

Help and part numbers welcome :)
PW@Woodsport
Posts: 7642
Joined: Tue Dec 14, 2004 6:40 pm
Location: durham
Contact:

Re: ST185 calipers

Post by PW@Woodsport »

You don't need anything else, they will just bolt up to the Mk1 hub and fit the Mk1b disc.

That is presuming you have the 256mm versions, they also did a 277mm version, so you would need a 277mm disc for those.I would also check exactly what you do have because to the best of my knowledge only the st165 had twin pots.... i think the 185's were all singles, but it gets complicated on the 277mm versions, they might have done a twinpot for those.

Basically if they came from a 256mm disc'd car you are good to go :thumleft:
Image
MarcsMR2
Posts: 83
Joined: Fri Jun 23, 2006 5:31 pm
Location: Bristol

Re: ST185 calipers

Post by MarcsMR2 »

The calipers are deffo twin pots, fitting to a mk1b (D reg).

Is there a part number on them I could look for to make sure?
PW@Woodsport
Posts: 7642
Joined: Tue Dec 14, 2004 6:40 pm
Location: durham
Contact:

Re: ST185 calipers

Post by PW@Woodsport »

Sorry i don't know.
Image
jon_st205
Posts: 618
Joined: Sun Feb 19, 2006 9:37 pm

Re: ST185 calipers

Post by jon_st205 »

Early import ST185 came with twin-pots. I think they're slightly different to 165's but still bolt up to your exisiting disk. However I don't think these are a big upgrade so I would flog them on and look for a set of the ST185/UK ST182 single pots. Nice thought from the missus tho :thumleft:
PW@Woodsport
Posts: 7642
Joined: Tue Dec 14, 2004 6:40 pm
Location: durham
Contact:

Re: ST185 calipers

Post by PW@Woodsport »

On the contrary jon, the twin pots are a great upgrade, that's why the heavier mk2 mr2 and celicas have them :thumleft:
Image
jon_st205
Posts: 618
Joined: Sun Feb 19, 2006 9:37 pm

Re: ST185 calipers

Post by jon_st205 »

Hmm, I guess, still a tiny disk would be my concern. They are very ill thought of on the ST165/ST185 though, yes, I will grant that they have an extra 300kg's to stop.

Jon
cartledge_uk
Posts: 7608
Joined: Sun Nov 13, 2005 6:28 pm
Location: Newbury

Re: ST185 calipers

Post by cartledge_uk »

My advice would be a test fit, remove one wheel and caliper (keep it connected to the brake pipe, just zip tie it out of the way making sure that the brake pipe isn't stressed) and just try the combinations of caliper and carriers.

When you have a fit you are confident with, then do the real fit.

You will need some new brake fluid if all goes well :thumleft:
MarcsMR2
Posts: 83
Joined: Fri Jun 23, 2006 5:31 pm
Location: Bristol

Re: ST185 calipers

Post by MarcsMR2 »

Think I'll be trying that this weekend. My concern looking at them is that 1 of the carrier bolts look different.

I thought both top and bottom bolts on my existing Calipers had the same sort of hole but on these it seem different on the 2 bolt holes.... maybe I'll take a pic later and post it. :)
PW@Woodsport
Posts: 7642
Joined: Tue Dec 14, 2004 6:40 pm
Location: durham
Contact:

Re: ST185 calipers

Post by PW@Woodsport »

You do have the celica carrier brackets as well don't you?

If not they aren't going to fit i'm afraid.
Image
MarcsMR2
Posts: 83
Joined: Fri Jun 23, 2006 5:31 pm
Location: Bristol

Re: ST185 calipers

Post by MarcsMR2 »

only got the calipers.

Guess the first thing im gonna need to do is get the carriers then lol

Any one know the part number?
Post Reply

Return to “MR2 MK1 1984-1989 NA & SC”