I think there have been at least 2 previous owners between me and him..

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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.

hit them real hard on gravel.... on bitumen with sand on it..... and when approaching a tight corner on a mountain downhill - then you'll know if the rears lock up or not

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did I tell you that I won a trophy?

oh. I did the Metro 8.4" and replaced the rear wheel cylinders, refaced the drums.. I'll be hitting em HARD to see how it behaves... its a 78 clubby though, are the stock rear cylinders any bigger than on the Morries?

it might spin huh?

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78 van 1300 cam extractors weber, 12" Superlights Metros Konis HiLos MP3 Amp Sub Alpine speakers and lots of fur
www.crazybitchracing.com

they're the same.... change them to the 5/8" bore wheel cylinders

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did I tell you that I won a trophy?

I'm Running 9.1" Hondas and it seems to be ok with the stock clubby cylinders. I push them pretty hard and during testing have locked them up and they seem fine, pushing it on a mountain road is OK too. but i generally get my braking done well before the corner, don't like braking hard mid corner..

I locked it up with brad on some sand before a corner as a truck decided he wanted three lanes.. the rears were fine..

We'll see how it goes on the track though...i have the smaller ones here waiting to go on...

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Starlet Conversion:
http://www.ausmini.com/forums/viewtopic.php?t=15484

interesting.... maybe that's another difference between hondas and S disks... more even pressure?

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did I tell you that I won a trophy?

Having a set of each in 10" wheels, there's not a lot of difference in pedal effort (both cars have no servo). But I reckon the 7.9" Hondas will outstop the S brakes when hot- they are bigger and thicker. (ooh-er!)

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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.

I would have thought there wasnt a chance in hell of locking up the rears if you have decent disk brakes on the front.. can you guys explain why that is (briefly is fine thanks)

or do you mean the fronts will lockup? Im not too worried if the fronts lockup (under heavy breaking), I'll be allowing for that. I hate ABS, much prefer to feel that "just before lockup" stage
Ive got the metro disks on the front and standard drum on the rear

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78 van 1300 cam extractors weber, 12" Superlights Metros Konis HiLos MP3 Amp Sub Alpine speakers and lots of fur
www.crazybitchracing.com

Jill,
When you hit the brakes hard (with discs on front) you get a lot of weight transfer from rear to front. Add the fact that line pressures are higher in a disc system, and the rears can lock. (Standard rear cylinders are 3/4" diameter).

Ways to avoid this are-
1. Reduce the maximum rear line pressure by making the rear pressure limiting valve lock off sooner (shorten its spring)- or,
2. Fit smaller rear wheel cylinders (5/8") so there is less braking effort on the rear shoes. Note this method will reduce rear braking efficiency (a bit) at all times, but it's easy to do.

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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.

ah.
Well Ive twisted someones arm so I'll get some track testing in before it hits any hillclimbs or track events.. or spririted street driving for that matter. If it can handle a couple of laps at the track I'll be very happy. If there are lockups, I'll change rear cylinders as suggested, or throw in a brake bias adjuster?? Can I do that? Wouldnt that be easier?

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78 van 1300 cam extractors weber, 12" Superlights Metros Konis HiLos MP3 Amp Sub Alpine speakers and lots of fur
www.crazybitchracing.com

I know I have an artical in one of the Pommy Mini Mags about modifieing the rear Pressure Limiting Valve so it becomes adjustable...I'll have a surch for it

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Stop Licking the Dog...I Don't Care Who Started It

Some of KC's thoughts on this subject. Note he talks a bit about diagonal braking systems too but we never got those (thankfully!)
http://www.minimania.com/web/DisplayID/ ... ticleV.cfm

Note it's pretty easy to mod the early type rear pressure limiting valve to make it adjustable, but if it can be adjusted from inside the car it's illegal for road use (in NSW anyhow).

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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.

Ok thought this would be better in this post rather than the civic one.

Question 1. (stupid question?) To do a conversion do you need the discs to be off a model that is currently front wheel drive? From looking at various rotors It seems it isnt necessary but prefer to be 100%

Question 2. If above is true has anyone done a conversion from an LC torana approx 8inch disc or even better not sure on the model but part number is DBA493 Dihatsu 7inch (11mm less diam than the cooper S disc)?

Personally would like to keep 10inch wheels without having to grind a caliper up. Any feedback, Ideas would be appreciated.

Cheers

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If it squeaks and leaks, then its sure to be a mini

Building a dream one nap at a time....

http://spaces.msn.com/members/derbydog/

1. Rotors can be off anything that fits. But with 10" wheels and drum swivel hubs there are few choices.
I looked at a few baby Jap cars- Subaru Fiori, little Daihatsu etc etc but the pads are like postage stamps..
A while back I also considered Gemini calipers. They look a bit like S ones but the hose fitting is pointing at the CV if you fit to a Mini..
No way they will fit in 10" wheels. Neither will much else, except Cooper or S ones.

2. Somebody in Bankstown is doing Camira discs, dunno what size wheels though. 10"- I don't think so.

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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.

I looked at 4 cyl Torana 8.4" - looks promising as the pad is the SAME part number as a Mini 8.4 and the stud pattern is the same as a Mini. But the disk will not fit a drum drive flange the way the Honda ones will so you would have to do a lot of messing about to make them fit. The calliper is not small enoughto fit in a 10" rim anyway.

Daihatsu Handi(?) 7" disk callipers wold probably fit but the disk design is again not suitable, so you would probably have to use disks from something else anyway. But as teh Doc says, the pads are really small - they are designed to stop an 600-800cc car with 30hp power, not a Mini with a 70-130hp 1275!

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Brett Nicholson
Greendale (near Ballan) VIC.
1971 Morris Mini Moke
1966 Austin Mini
1965 Morris Mini Traveller
1973 LR Series 3 88
2007 LR Freelander 2