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This pipe kit is for converting Metro 4 pot callipers with dual feed pipes to a single feed as used on minis.

It is necessary however, to check that this is permitted by the legislation in the country in which the vehicle is to used. To ensure maximum...

CONTENTS OF C-AJJ4028 BRAKE 7.5”DISC KIT (NO PROTECTOR SHIELDS)

1 x 27H4656 CALIPER GENUINE AP R/H
1 x 27H4657 CALIPER GENUINE AP L/H
1 x FAM2390 HUB BARE R/H
1 x FAM2391 HUB BARE L/H
2 x 21A1270MS DRIVE FLANGE
2 x GBD101MS BRAKE DISC. etc.....

This bar has been developed to complement those road cars fitted with post 1990 rubber springs. Being the softest compound yet used on the Mini in an attempt to improve comfort, they allow more body-roll. This bar will not only reduce body-roll, but also slightly reduce dive under braking and squat under acceleration. The bar is aimed at the general daily driver. For more progressive drivers it is highly recommended that its used in conjunction with rear anti-roll bar kit C-AJJ4009. By testing various settings its possible to attain a very well balanced fast road car with improved steering response to compliment the other advantages of these bars. It is made to only fit the standard diameter/dimensioned tie-rods.

What you actually need for the disc/drum conversion is pretty straightforward. Disconnect the steering arms, top and bottom swivel-pins, CV joint, and flexible brake pipes at the subframe - that’s it. There are, however, a number of ancillaries to consider.

Basics

Basics Fitting discs designed for the Mini is easy enough. Just make sure you use CV gaiters for the disc-brake set-up - these have a different bellows shape to stop the gaiter rubbing the inside of the hub. The drum type will rub, then split, shedding grease all over the place. Moly grease is mighty mucky stuff to deal with and doesn't assist braking at all! A tip for racers - to stop the gaiters over-expanding when getting very hot and imitating the aforementioned, put either a decent sized split pin or (my favorite) a piece of very small bore pipe - as in the type supplied with WD40 aerosols, etc. - under the retaining strap on the drive shaft. This allows air to escape and return,

Brakes - Fundamental Considerations

When looking to increase their cars performance, most folks immediately turn to considering higher engine power outputs. Because of this pre-occupation brakes tend to slide down the improvements priority list. However, they are far more important - being able to accelerate at warp speed to hyper-space in the twinkling of an eye is all very well, but disastrous if you can’t stop. You will make a very big hole in the scenery, and possibly end up wearing an wooden over-coat. Getting the braking system sorted out can help to make the car quicker, as you will be able to more confidently, therefore maximising speed in any given situation. Being one of those ‘sciences’ used in the automotive industry I hope to shed some light on the subject as it's another of those where many questions from confused and mislead folks that clog up my e-mail board. The advent of the Metro, and the brakes used on it has spawned a lot of activity in this direction. It was soon discovered that they could b

You can only use the MS72 adjustable brake regulator/bias valve with a front/rear split system. Definitely NOT the diagonal split type (for identification see 'Brakes - Rear brake bias adjustment'). These should have been 'X-ed' at birth. Makes the car handle very interestingly when the system only operates the diagonally opposed brakes. Scary stuff. Almost as much fun as when the rears only work on a front/rear split set-up - particularly as the PDWA is built into the master cylinder, and it still has to go through the FAM7821 pressure regulator valve! Damn near no braking on the rear. Either way - split system brakes are grossly inefficient when only using half the system as they are designed to do when a failure in the other half occurs. Quite frightening. To install the MS72 into a front/rear split system, it needs fitting into the rear feed line. Determining which this is can prove difficult if the system has already been tampered with or new replacement components fitted. Nam

Engine - 998 Tuning, Bolt-ons

The 998cc engine is a very robust and tunable unit. It is also the most common engine found in standard Minis. See bottom for useful part numbers Terminology: MSC/MM - Mini Spares Centre/Mini Mania ID - Inside Diameter OD - Outside Diameter BBU - Big Bore Unit (refers to all 1275cc-based units) SBU - Small Bore Unit (refers to all sub-1275cc units, here the 998) BHP - Brake Horse Power LCB - Long Centre Branch Despite the lure of the much-advertised 1380cc alternatives, many simply want to get a little more from what they have at reasonable outlay. The single biggest restriction on any standard Mini is the 'breathing apparatus' - anything that is connected to the induction and exhaust systems. The standard exhaust being the biggest culprit - it is desperately restrictive in the name of noise suppression and cheapness of manufacture. Oddly enough it also increases fuel consumption when tested over a better designed, fre

GEARBOX - How they work

Having decided on or even implemented a course of action to bolster the performance of your Mini’s engine, maximising it’s potential should encompass a good look at the gearbox.

GEARBOX - How they work

Having decided on or even implemented a course of action to bolster the performance of your Mini’s engine, maximising it’s potential should encompass a good look at the gearbox.

Air filtration - K&N Air cleaner test.

In the forefront of Mini tuning, improving the over-all breathing capability of the very asthmatic A-series the air filter set-up is one that sees priority attention. All the widely available (and widely varying) stage one tuning kits include at the very least a replacement - and hopefully - high-flow air filter element to fit into the standard plastic case,

In the past few years (well, must be nearly 6 years by now!) since I got involved with writing for the specialist Mini Magazines I have been continually fighting with the problem of limited space. This has limited what I have been able to cover, both in subjects and in details. Up until recently (say the past year or so) I have been covering fairly broad topics in a fairly broad terms and detail. Basically trying to cover perhaps the most popular areas dabbled in by the Mini owning masses.

The 998cc engine is a very robust and tunable unit. It is also the most common engine found in standard Minis. Despite the lure of the much-advertised 1380cc alternatives, many simply want to get a little more from what they have at reasonable outlay.

Terminology:
MSC/MM - Mini Spares Centre/Mini Mania
BBU - Big Bore Unit (refers to all 1275cc-based units)
SBU - Small Bore Unit (refers to all sub-1275cc units, here the 998)
BHP - Brake Horse Power
CR - Compression Ratio

Engine - 998 tuning, further options

Following on from the easily bolted on performance enhancing components out-lined in the stage one section, we need to consider where to go to get more power output.

To improve engine out-put, you need to increase the engine's 'breathing' ability. The stage one kit deals with all the easily bolted-on external parts, and represents the best increase for investment. From here on in the power increases will cost commensurately more money. Power production of any engine, once the 'breathing apparatus' (induction/exhaust system) has been dealt with to cause no restriction ...

DIY enthusiasts often believe that building an engine to give excellent all-round road performance is beyond them. Mainly from comparisons made between what they have been able to achieve and what specialists say should be achievable from any particular type of engine build.

Generally scrambled further by the non-perfect match of parts and components used between aforementioned specialist and erstwhile DIY-er, and the ritual 'nose-tapping and knowing winks' display of those specialists. Something you can very nearly 'see' even when talking to such folk on the phone - or that inimitable 'ah, yes, well…' So some form of 'black art' is implied. Whilst there is most definitely a degree of 'feel' involved between the real specialist's results and those of just a good engineer - the bones of the deal is subject to no such thing and is certainly within the capability of the DIY enthusiast given the necessary information. And that has been the problem.

SU Carbs - Poor idle quality

Something that crops up when any modifications are made to an engine - mainly in the form of improving induction and exhaust capability - is that of idle quality.

After applying aforementioned freer-breathing products to enhance power output, many complain that no matter what - including post rolling-road tuning - they can not get a satisfactory, steady idle setting. And this after checking for manifold/gasket air leaks and spindle to carb body play (usual suspect as the spindle wears quite dramatically over several thousand miles). There is one thing that is often over-looked - the air valve found on many later model cars. This sprung-loaded air valve is built into the butterfly, sometimes called a 'poppet' valve or anti-dive valve. It is primarily there to reduce emissions when the engine is on the over-run - closed throttle at speed, i.e. anything other than at idle and gearbox in neutral.

FOR USE WITH STANDARD TIE BARS ONLY

This bar has been developed to complement those road cars fitted with post 1990 rubber springs. Being the softest compou

Jack rear of car up, and place securely on axle stands, positioned to allow maximum access to rear subframe/rear radius arms area. Remove rear exhaust hanger to exhaust clamp or un-hook rubber loop on late type cars. Using suitable saw, cut off centralising tab from bottom center of subframe rear cross member. Remove rear wheels and brake drums. Remove upper most and rear most brake back plate to radius arm nuts and bolts.

C-AJJ3313 PROGRESIVE REAR BUMP STOPS

This kit is intended for all hydrolastic minis, although it has been fitted on to dry suspension cars to give improved handling characteristics during motor sport events. Check all clearances of brake pipes and hoses and relocate if necessary. On dry suspension radius arms there is no hole for the bump stop bracket.

For use when converting cars which already have hubs fitted that hold calipers except 997/998 Cooper which will also require larger Constant velocity joints and Timken bearings, If you have brake shoe front drum brakes a kit C-AJJ4029A is available which contains all parts required..

The contents of this kit ...

These calipers are intended for use on 10”wheels with 7.5”diameter solid brake discs.

The kit contains:-

2 calipers, one right and one left hand. Please ensure that they are installed correctly with the bleed screws in the vertical position (i.e. at the top)
4 longer hub fixing bolts(53K1049)
4 bolt washers(21017Z
4 round spacers (AN1380) which go between hub and caliper where the fixing bolts locate. Bolts and spacers not required when fitting to vented discs
1 set of brake pad split pins (GBK1025) BUT NO BRAKE PADS.

C-AJJ4007 FRONT BUMP STOP KIT

Remove existing bump stop rubber completely.

The smaller hole of the new Bump rubber should be fitted over the retainer on the bracket, using hand soap or brake fluid on the rubber if necessary to ease the fitting. It is advisable to put the metal bracket in a vice so you...

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