Upgrade of rear INBOARD brakes ??? - LotusTalk - The Lotus Cars Community
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post #1 of 17 (permalink) Old 10-11-2011, 07:28 PM Thread Starter
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Upgrade of rear INBOARD brakes ???

I'm looking for ideas how to improve rear brakes performance on the car with inboard rotors (C35 Citroen tranny).
Starting from pad upgrades to whole new assembly, rotors and calipers...
Are there any rear brakes kits on the market?
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post #2 of 17 (permalink) Old 10-11-2011, 07:38 PM
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I needed a few of the pins or shims that hold the rear calipers in place as when I bought my car they were missing. I called a few suppliers and no one had any and said they were now unavailable thru Lotus. I fabricated a set that worked, however I eventually found the correct parts used from another forum member. I am curious also as to whether there is any upgrade for the inboard brakes other than just different pads. As it seems parts for the inboards are rare.
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post #3 of 17 (permalink) Old 10-12-2011, 02:19 PM
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At one time LPBC (LotusPreparedByClaudius) offered a Wilwood front and rear upgrade for Esprits with 15" wheels C35 trans). Some local owners have fitted them with good results.

Contact them

Lotus Prepared By Claudius Inc.


Myself, I just used cryogenically treated rotors (Lotus OE) and performance pads (Mintex C1144) when I was tracking my Esprit.

Atwell Haines
'88 Esprit
Succasunna, NJ USA


"Not all angels have wings." - Turbo R
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post #4 of 17 (permalink) Old 10-12-2011, 06:11 PM Thread Starter
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post #5 of 17 (permalink) Old 01-03-2018, 11:47 PM
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someone in Europe went to Ford Mondero rear discs. He purchased new rotors that were cross drilled. Not sure what year of the car. See https://www.thelotusforums.com/forum...roject/?page=2
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post #6 of 17 (permalink) Old 05-15-2019, 05:44 PM
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I'm getting somewhere with this. Its rather easy to get something to work if you don't mind a parking brake delete.
I want to keep mine.
This is a bigger rotor and vented, a floating caliper with a big piston. The C.V. joint is the same length and I don't plan on destroying or modifying anything that is a Lotus part.
I still have some work to do but I have the proof of concept done.

Thanks,
Rich
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post #7 of 17 (permalink) Old 05-15-2019, 07:58 PM
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Is that an iron version of the VW/Audi caliper people have been using on the rear?

https://www.thelotusforums.com/forum...cars/#comments

1985 BRG Turbo Esprit
Chargecooled w/Megasquirt EFI
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post #8 of 17 (permalink) Old 05-16-2019, 01:56 AM
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No... I wanted something with at least the same piston size as the lotus original equipment and the ability to accept a vented rotor. The VW parts don't seem to accomplish that.
VW rear brakes calipers are actually undersized I think.
I'll give progress reports soon. I have 60 hours into this and a pile of wasted money so I don't plan on giving up anytime soon. 😀

Thanks
Rich
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post #9 of 17 (permalink) Old 05-16-2019, 03:03 AM
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hi, nice work. Can you tell diameter of disk, typ and manufacturer?

cheers

Harry
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post #10 of 17 (permalink) Old 06-08-2019, 08:00 PM
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Progress report getting closer to being done.
Larger caliper, keeps parking brake, larger and vented rotor.
This is not a change for the faint of heart. A lot of fabrication. I'm going to finish them up and work on upgrading the fronts.

Thanks,
Rich
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post #11 of 17 (permalink) Old 06-08-2019, 08:57 PM Thread Starter
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post #12 of 17 (permalink) Old 06-10-2019, 04:10 PM
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Quote:
Originally Posted by MRDANGERUS View Post
Rich,

They look impressive!
That is quite the honor coming from you.
Very frequently while searching the forums, your old posts give me mountains of useful information.

Thanks,
Rich
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post #13 of 17 (permalink) Old 06-14-2019, 06:06 PM
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Progress report.
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post #14 of 17 (permalink) Old 06-14-2019, 06:29 PM
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Looks pretty beefy with both of 'em on there....

1985 BRG Turbo Esprit
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post #15 of 17 (permalink) Old 06-14-2019, 10:44 PM
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Quote:
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Progress report.
What is the diameter of the piston?
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post #16 of 17 (permalink) Old 06-15-2019, 04:38 AM
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They do add some weight and the pistons are 47mm.
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post #17 of 17 (permalink) Old 06-15-2019, 07:23 PM Thread Starter
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Quote:
Originally Posted by Dingo View Post
That is quite the honor coming from you.
Very frequently while searching the forums, your old posts give me mountains of useful information.

Thanks,
Rich
Thank you Rich.
I'm glad you can use them. That's why they are posted here.

Keep Esprits Alive!
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