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rear stepped drum brakes when upgrading to 8.4 discs
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Author:  stuvz [ Sat Aug 15, 2015 4:18 pm ]
Post subject:  rear stepped drum brakes when upgrading to 8.4 discs

I am soon changing out my front drum brakes for 8.4 discs. I have spacers on my rear drums (not sure how wide) and I currently have 10 inch wheels but I can see rubbing on one of the shocks. I am not sure if this is currently happening or if it was rubbing and the previous owner put on the spacers. Anyway I will be replacing the shocks and putting on 13x7 minilites :roll: .

Will I need to get the 1 inch stepped drums? and do I have to change the length of the wheel studs to do so? (what size)

Author:  stuvz [ Sat Aug 15, 2015 4:39 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

I THINK I need 58mm wheel studs for 1inch stepped drums.

Author:  simon k [ Sat Aug 15, 2015 5:12 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

there are 3 lengths, you need the longest ones

you also need 5/8" bore wheel cylinders for the back

no comment on the 13x7 wheels... :roll:

Author:  stuvz [ Sat Aug 15, 2015 11:03 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

I have the different wheel cylinders and I do believe it is the 3rd of 4 lengths. Apparently there is a bigger and thicker drum out there! Yikes. Thanks Simon

Author:  michaelb [ Sun Aug 16, 2015 8:22 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

I have 13x7 on my mini with 8.4" front disks and normal size stepped rear drums and the only thing I think you will need to worry about is how big the flares will need to be. I also believe spacers are illegal? Or have I misinterpreted your details?
Image

Author:  michaelb [ Sun Aug 16, 2015 8:28 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

My rear drums are finned but are the same width as Cooper S stepped drums

Image

Author:  Hobson [ Sun Aug 16, 2015 8:30 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

I will be trying next weekend, I currently have the 55mm studs, and will be putting the STD 1275GT 1" drums on the back.

Author:  Phil 850 [ Sun Aug 16, 2015 9:41 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

michaelb wrote:
My rear drums are finned but are the same width as Cooper S stepped drums

Image

Sorry to diverge here but are these the Moulton Smootha Ride cones and hilos.
If so, are you happy with it.

Author:  michaelb [ Sun Aug 16, 2015 10:09 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

Yes it is Smootha ride kit
And yes very happy
It rides similar to hydro car and soaks up the Sydney pot holes very well
I think rear donuts are close to standard but fronts are much bigger in height.
Took a while to settle down to a good ride height but was ok after about 12 months

Author:  Phil 850 [ Mon Aug 17, 2015 7:42 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

michaelb wrote:
Yes it is Smootha ride kit
And yes very happy
It rides similar to hydro car and soaks up the Sydney pot holes very well
I think rear donuts are close to standard but fronts are much bigger in height.
Took a while to settle down to a good ride height but was ok after about 12 months

Thanks for the info Michael
I had just ordered this kit when I saw the photo of your car and was interested in your experience.
Phil

Author:  Timbo [ Tue Aug 18, 2015 8:51 am ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

I put a smootha ride kit in my Moke about 10 years ago. It was excellent at first, but its not so good now. The cones sagged a lot over the years. It was still worthwhile though.

Tim

Author:  stuvz [ Tue Aug 18, 2015 9:19 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

Tell me how you go Hobson, also where did you get yours from?. I am thinking of ordering new cones, gaz lowered shocks and hilos too... only thing stopping me is the coolant leaking from my engine block haha

Author:  Hobson [ Wed Aug 26, 2015 3:29 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

Weather got in the way, hopefully this weekend :roll: - minikingdomonline.com.au

Author:  Hobson [ Sun Sep 27, 2015 3:25 pm ]
Post subject:  Re: rear stepped drum brakes when upgrading to 8.4 discs

sorry for the 100000000 year response on this, can now confirm you will need longer than 55mm studs, as you only get 2.5 turns on these.

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