I feel that I should post this because I have spent the last few weeks collecting bits, and now discovered that things don't fit. Hopefully by listing things that might be useful to someone someday, I can drag something positive from the experience.

While I am here though, here are some Sierra vs Golf Mk4 calliper trivia:

Sierra rear calliper including slide bracket 2.730kg
Sierra carrier/slide bracket (steel) 0.730kg

Golf Mk4 rear calliper (2003) including slide bracket 2.160kg
Golf Mk4 carrier/slide bracket (steel) 0.760kg


Interestingly the slide brackets have the same holes and spacings. The critical difference is that the Golf calliper bracket has holes nearer the centre of the wheel (if you use the same holes then the golf brake would accommodate a larger disk than the Sierra).


The golf brake calliper is much nicer looking (all alloy) with fins and such, whereas the Sierra is cast iron. Unfortunately the Golf calliper is much bigger, and so without a lot of grinding I wasn't going to get these under my 13inch compomotive revolutions (trackday wheels) although they are fine under 14inch compomotive revolutions (everyday wheels).


Whilst on my trivial purge:
Sierra rear non-ventilated disk 3.320kg
Escort Mk3 front disk 3.550kg, 240mm diameter, moves braking surface well inboard
Fiesta Mk3 front disk, 3.180kg, 240mm diameter, moves braking surface inboard, but not as far as Escort.
Both the Escort and Fiesta need the standard hub to be machined down by a few mm (easier to write than to do).


Other notes; golf callipers mount using a M10 metric fine bolt (Sierra use standard M10). Golf callipers use a wierd M12 banjo connection which russbost can supply, but which seems to be a bit rare if you want to make your own hoses.



Golf callipers look like this;


Sierra callipers like this;



I am going to go an lie down now,and hopefully forget about the time I have wasted!

Matt

Does that mean you'll have a golf caliper going spare?

no, I have a pair!

Matt

And these are Diahatsu Applaud calipers inside a standard 13" Alloy. Not as pretty as the chunky Golk units but smaller and lighter than the Sierra!


[Edited on 13/10/10 by owelly]

It depends on your wheels, but compomotives have the biggest internal dia of cast rims.

I dont think there is any way to get a std sierra rear disc of 10" under a 13" rim. When I measured it all up they clashed by well over 1/2". Unless you have 0 offset wheels.

To make them fit under mine I went for Fiest front discs (240mm) and machined down the hub. This then also reqired a special caliper beacket making up (laser cut)

Even now, and with wilwood calipers which are much lower profile, theres only about 3mm clear to the CXR's

Split rims are the answer - see for sale section

Much larger internal diameter than cast wheels - I'm running 280mm discs (11" in mine

[Edited on 14-10-10 by v8kid]

split rim

quote:

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Originally posted by owelly
And these are Diahatsu Applaud calipers inside a standard 13" Alloy.

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I have 13inch 4 spoke Revs, sierra (angry grinder optimised), custom mounting bracket (no lasers for me, just a drill), fiesta fronts non-vent 240mm Mk3. This fits fine, except I have a wheel weight that catches on my upright (an IRS sylva feature), so I have added a 6mm spacer (thanks Flak Monkey).

With Mk3 escort you gain even more space, as it moves the disk further in board.


When I fit the 14inch wheels, I remove the spacer. With the spacer on I get a slight bodywork clash with the larger wheels.

What do Applaud calipers actually weigh (using conventional measures of weight!). Actually I don't care, I am not going to mess with the brakes any more, too much wasted time already.


matt