Okay......


Well I have just spent the past 5ish hours reading thru pages and pages and pages of "Honda Brake Conversions" and come up with the following conclusion....

BLAH.

Yep. I am confused. But...... i'll try to list the points that I can remember.........

-Everyone else is using solid discs (pt # DBA 191) and matching calipers...... I want to use vented discs (pt # DBA 187) with matching calipers, as per this original thread.

-A spacer will be required to match the stepped drum offset.

-I keep reading that the "common" Honda calipers on solid discs (pt # DBA 191) machined down to 7.9" will not fit under 10 inch steel wheels..... but could POSSIBLY fit with wider spacers.


All I want to know is: will a 10 inch steel rim fit IF....

1. If I use the DBA187vented discs, and machine them down to maybe 7.5 inches (??),
2. shorten the caliper bracket design to suit (mounting nut clearance issues??)
3. shorten the pads to clear the disc flange, and
4. fabricate a spacer to match the stepped drum wheel track width.........

The only thing I am not sure of is what part of the steel rim fouls on the disc/caliper? What do I need to aim to clear? Will reducing the disc and caliper from 7.9 to 7.5 inches cure this fouling problem?

Either way, I am going shopping for parts in about 7 hours..... and havent slept yet.... so I wont see these replies til AFTER I get back.

_________________
[NATHAN] -- Sold everything mini related and am back in big beautiful BMWs

Just found some more info....

The 1988 to 1991 Honda CRX 1.5 DX uses the vented discs and calipers as seen on SEAN0719's mini.....

This is the setup I am interested in.

Caliper part number, OEM, is N1040-100272
Disc part number, OEM, is N1000-55877 or N1000-54700 or N1000-62194
Disc part number, aftermarket, is DBA187
Brake pad part number, OEM, is N1010-63403
more part numbers CLICK HERE

The vented disc is dimensionally almost the same as the solid version, except:
-the thickness of the vented rotor which is 19mm (unlike the solid disc at 12mm)
-the diameter of the vented rotor which is 242mm (the solid one is 231mm)

The overall height (mounting flange face to rear of rotor) of both discs is ALMOST same, 44.5mm vented and 44mm solid........ so they should both fit the same way without fouling on a caliper mounted on a 6mm thick bracket.

_________________
[NATHAN] -- Sold everything mini related and am back in big beautiful BMWs

Vented rotors may get U more pub points, but for road use on a Mini, you will never get them hot.
Even the solids Civics are 9.1" diameter x 12mm thick... Mini 8.4s and 7.5s are puny by comparison.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Due to the rain today, I didnt end up going to collect my parts...... maybe sunday will be sunnier / less muddier





The 1.5 Civic SEAN0719 used is the USA delivered version ..... which is different to the Australian delivered version.

It appears that the 84-91 CRX in Austrailia is the only one with this brake setup, as the Civic from the same era were all fitted with solid discs.

CRX parts are usually more expensive than plian old Civic stuff...... but I will need to confirm this during the week if I get a chance.

_________________
[NATHAN] -- Sold everything mini related and am back in big beautiful BMWs

PLEASE NOTE:

Every time I mention the 1984 to 1991 Honda CRX brakes, I am referring to the ED 1.6 litre 2-Door DX-Si model CRX with the SINGLE CAM motor. This car is the NON VTEC version.

The VTEC engined cars had different (larger) sized vented brakes to the ones that are in all the pictures in this thread. VTEC BRAKES ARE NOT THE ONES WE WANT FOR THIS DISCUSSION.

Just found this out for myself, so I had to share it.

_________________
[NATHAN] -- Sold everything mini related and am back in big beautiful BMWs

if you got the civic discs and callipers would you be able to put vented discs straight on it or is there more to it then that?

Not enough room inside the Civic calipers, the Accord etc ones are wider to fit the vented rotor.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Wow, what happened in the week that I was away. In response to the weel stud question, my studs are stock. The disks slide over the studs just like the drums do, and since the thickness difference between the disk and drum (where it mates to the drive flange) is about equal, my track remains the same. My car didnt come with stepped drums, or anything cool like that.

Below is a photo of my car, you can see that the wheels do indeed fill out the arches.


I finally gave up on the research, and just attempted it myself. I think that you can go crazy with all of the "what ifs".


Side note, over the past 10 days I drove my mini 2300miles without any problems. THe brakes worked soo well through all of the mountain roads, needless to say I am very pleased.

hi sean 0719

i was just about to get some prices on some rotors and was wondering if you could tell what size they were. 231mm - 17mm or 242mm -19mm
just to make sure i've got the model.

Thanks

Steven

_________________
Vtec Mini clubman. Commenced Jan 06.
Still Going June 07

http://s25.photobucket.com/albums/c71/sunburstvl/

242mm-19mm

Sorry to revive an old thread, but it is the one that has most of my research on it..

Unfortunately, the most useful posts I made were lost when Ausmini crashed last year, and they contained the info that I can no longer find anywhere else.


Just having a few questions.... still...


Firstly....



Year model of Honda City used, please?


....and secondly...


...regarding the Accord Vented brakes... exactly WHICH model Accord is it? (and i mean the Australian delivered version, not US)

Is it the '85 model? there is one of these in a wreckers I know of.. and the brakes are definitely vented... Bonnet flips forward on this model I think...

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[NATHAN] -- Sold everything mini related and am back in big beautiful BMWs

The Honda City brakes I bought from Brad (13secmini) he got `em from NZ. Around `84 or so model I think.
Main thing I didn't like with the Citys (apart from the need to trim pads) is the caliper mounting plates could only be 4mm thick maximum, due to the offset of the City rotor.
But that's around 3x thicker than the drum backplate was anyway.
my pics are here- http://home.exetel.com.au/zoomini/zoomini/Honda/
The ventilated Accord ones shown are on "Animal's" Mini up in Qld.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Are we talking about a set up that would fit a roundnose mini ?

Only one year and one day later.

It's good, my fav section on Ausmini is the modified section, as it's the only reason why I like mini's.

Ok my pointless posting is over now. For now.

_________________
1964 Morris 850, 1330 Supercharged - 81.8hp atws.
1975 Leyland Mini S 1100S powered - Nice and reliable.
1977 Leyland Mini LS - Project LS-T

I think the question would be whether the Mini has 10", 12" or 13" wheels.

I have no experience with fitting Honda brakes under 10" wheels, but I have done 3 conversions using 12" wheels.

When I was scrounging around a wreckers looking for Civic disks (12'' application) I did find some smaller disks which I was told were early Civics. My guess is that they were small enough to fit under 10" wheels, but unfortunately the matching callipers were nowhere to be seen.

I don't know about the wrecker yard you visit, but the one I used had a lot of Japanese front cuts, so identifying the cars the brakes come off can be a mystery sometimes.


Cheers,

Dave