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Alan16v
24-09-2008, 09:21 PM
Hello all

Been using the forum for a while, and finally pulled my socket out of my a**e and start my build diary.

Quick heads up, my first car was a mini, and I still have it, well sort of. Decided that I wanted to tune the mini without having to worry about gearbox failure or paying a few thousand for a box and engine. Love the A series, hate the gearbox. I owned a 16v cavalier a few years back and after a feature of a 16v mini in miniworld, the bug bit.

Took blooming ages to get the project started - a lack of garage tends to hamper this sort of thing. but finally got one last year and started.

Aim was to get a solid shell, rollcage, home designed frame, all to fit under a standard round front. Fuelling by GSXR 1000 throttles (home made), braked by metro 4 pots, coilovers etc etc.

The original mini, stood for 6 years.
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/Picture005.jpg

Started to chop the front off and realised the shell was a bit past it and would require some decent body work, didn't want to spent loads of time doing this so decided to start with a shell little more solid and found this on ebay - some may recognise it!!

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/Engineframeincar022.jpg

quite like the fact it has a zeemax kit on it, always fancied the body kit

Spent ages chopping up loads of steel tube and my old frame to create this - the tube used is 40mm square and 3mm wall thickness - in relection this is far too OTT for the use and in time I will remake the frame in 30mm box - it is also bloody heavy :? dare not weigh it :( unless curiosity gets the better of me!!

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PC080082.jpg

this was oct/nov last year and was only the first attempt - need loads of trial fittings and ancillaries to be added to check clearances.

To get the frame in under the round front, I believe you need to loose the donut towers to get the engine back enough, hence I have gone for pivot points rather than retain the top arm points


http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/Engineframeincar001.jpg

trial fit....... great feeling when it gets in this position


Having owned an XE powered cav and researched loads, decided that the engine is very sensitive to the manifold primary and secondary lengths so dont want to chop it about. Trying to retain the standard exhaust manifold - so far so good - yet to verify the ground clearance, mind.... so watch this space...

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PC120109.jpg


standard front fits with engine in place
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/Engineframeincar020.jpg

and loads of room for the manifold, rad and alternator - maybe :? :?
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/Engineframeincar016.jpg


This little lot took me best part of 8 weeks, including sourcing bits and pieces - so quite happy with progression.


Major change in personal circumstance has put a halt on the mini project - so stopped work mid December 2007.

Decided to take a sebatical from work and life in the UK and decided to travel around the world for 6 months - in my early thirties so dont get this chance too often so bye bye to the UK and hello to China, Vietnam, Thailand, Oz, NZ, Chilie, Argentina, Bolivia and Peru....... agggghhhh then the UK......
Came back early June 2008 and straight back to work - what a shock to the system that was :cry: :cry:
Best bit, is my work allows me some free time and have since spent 3 weeks on the mini - .

will update with new photos tomorrow, but progress so far ...
- Cut original intake manifold down to a stub

- Spaced gixxer throttles to suit manifold - may have them positioned so they poke the air filters out of the bonnet 8) - not sure yet :?

- Repositioned engine to allow equal length drive shafts

- Tilted engine back so it sits better, I underestimated the slight compression on the engine mounts :oops:

- remade rear engine mount to avoid it fowling the steering rack

- Modified drivers side frame section to prevent coilover fowling

- Remade top suspension arms - as original idea was causing fowling by tyre

- Fabricated some brackets and remounted the original alternator - this is a big and heavy unit - just too stingy to buy a smaller one as this was practically brand new when engine was removed - however will more than likely change my mind!!!

- Attempted to mount the original radiator - but simply wont work with the original manifold and alternator - but got hold of a different shape one and looks a much better fit - wanted to get a custom one made but a bit pricey at the moment.

- Sad discovery - all the above will not fit in the std round front - so going clubby as not fond of the stretched round front...

- lots more room - but will revisit the standard front when project gets further along and more funds become available.

- Modifed the mini pedal box to accept a cable clutch and single brake cylinder, clutch is very heavy, well more stiff and not too much to do with the way the cable snakes through the engine bay - reckon the clutch is sticky or buggered, will have to wait until I crack open the engine to confirm this one..

- Bought a rover 100 steering column, the one with the two uj joints. I wanted a much more comfortable seating postion and not the typical 'bus' position so remounted original bucket seat, made a custom dash rail and column support. So much more more comfy, and I can stretch my legs fully...

- Trimmed back the original gear shift and rewelded, for info took 135mm out of the length of the lever bar - tightened it all up and I have all 5 forward gears and a reverse - yippppeeeeee :lol: :lol:

- still undecided on whether go for this size rubber - 185 60 13 - will double check rear clearance and then decide....

Alan16v
25-09-2008, 09:49 PM
will update with new photos tomorrow, but progress so far ...
- Cut original intake manifold down to a stub
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254015.jpg

- Spaced gixxer throttles to suit manifold - may have them positioned so they poke the air filters out of the bonnet - not sure yet
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254016.jpg

- Repositioned engine to allow equal length drive shafts

- Tilted engine back so it sits better, I underestimated the slight compression on the engine mounts

- remade rear engine mount to avoid it fowling the steering rack

- Modified drivers side frame section to prevent coilover fowling

- Remade top suspension arms - as original idea was causing fowling by tyre
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254013.jpg

- Fabricated some brackets and remounted the original alternator - this is a big and heavy unit - just too stingy to buy a smaller one as this was practically brand new when engine was removed - however will more than likely change my mind!!!

- Attempted to mount the original radiator - but simply wont work with the original manifold and alternator - but got hold of a different shape one and looks a much better fit - wanted to get a custom one made but a bit pricey at the moment.

- Sad discovery - all the above will not fit in the std round front - so going clubby as not fond of the stretched round front..
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254009.jpg
going to adapt the round front zeemax kit to suit.
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254010.jpg

got a bit of fiddling to do :? :?
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254017.jpg

Have lots more room with the clubby - but may still revisit the standard front when project gets further along and more funds become available, i.e remake subby..

- Modifed the mini pedal box to accept a cable clutch and single brake cylinder, clutch is very heavy, well more stiff and not too much to do with the way the cable snakes through the engine bay - reckon the clutch is sticky or buggered, will have to wait until I crack open the engine to confirm this one..
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254012.jpg

- Bought a rover 100 steering column, the one with the two uj joints. I wanted a much more comfortable seating postion and not the typical 'bus' position so remounted original bucket seat, made a custom dash rail and column support. So much more more comfy, and I can stretch my legs fully...
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/P9254011.jpg

- Trimmed back the original gear shift and rewelded, for info took 135mm out of the length of the lever bar - tightened it all up and I have all 5 forward gears and a reverse - yippppeeeeee

- still undecided on whether go for this size rubber - 185 60 13 - will double check rear clearance and then decide....

evolotion
25-09-2008, 10:16 PM
seing as your making your own frame could you mite want to make sure your top arm mounts are spaced further apart than those on teh commercial frame of similar design(yours appear same style) as this appears to be a bit of a weak point on them :) makign the mounting points wider ought to give the arms and tehre mounts an easier time :)

Alan16v
26-09-2008, 08:59 AM
Cheers for the comment.

Will take a look and see how wide I can make the pivot point, reckon there is movement there.


I originally wanted a mini version of the lower arm with tie bar stretching to the front, almost a double wishbone arrangement, but clearance issues with the drivers side of the engine and tyre restricted this :?
Only way round this would be restricted steering lock :? or spacers :shock: :shock:

Alan16v
02-11-2008, 12:49 PM
Moved on a bit since my last upload.

Got some new tyres, Toyo's 185 60 13 (same size as those that get plonked on caterhams). Decided to avoid low profile rubber just out of personal preference of wanting a bit more 'give' in the tyre wall, but also the extra rolling radius brings the gearing more towards the standard cav.

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA234047.jpg

all with an F20 box, Fd 0.89 and drive ratio 3.55

A is standard 195 60 15 vauxhall tyres
B is Mini 13's with 175 50 13
C is mini 13's with 185 60 13

speed rpm A B C
1000 22.8 20.5 18.7
3000 68.4 61.4 56.2

as i am sticking with the standard cav dials, to get close to the same speed was a must - as it stands running with the 185's the speedo will read 10% higher than actual speed rather than 18% with 175's

The wheels fit the front no problem, just need to cut back the outer arch as per fitting any 13's, the rear was the only concern. Just needed to trim back the angle of the radius arm bracket (the section attached to the underside of the rear frame). this allowed me about 5-6 mm clearance between tyre and nearest metal object..

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA234050-1.jpg


http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA234045.jpg
also trimmed back the rear arches for more clearance, however even with the spax coilovers on lowest setting there is still an arch gap - I can live with that - for the moment, cant remember if I bought the lowered set or the standard height jobbies :oops:

Any one else with coilovers is this as low as you can go at the back?

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314067.jpg

I chucked my old shell due to an advanced amount of rust - simply dont have the desire for major body surgery repair (hats off to those that do) but when removing the rear subby for mods found the boot had a questionable repair, so had to chop it out and weld in some nicer metal - plus some patch repair to the heal board :evil: :evil:
Still done now and bit happier - guess minis simply cannot escape the r word!!!

Put some finishing touches to the frame and the suspension components and put it all together - very excited about getting the shell rolling

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314063.jpg

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314062.jpg
still eyeing up the body kit

Took a suggestion from Evo about spacing the top arm mounts further apart - required some mods to the bulk head - the pivot point to point spacing is now 7 inches which is greater than the top arms 6 3/4" length.

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314060.jpg

http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314058.jpg
bulkhead mods - inside just need to bend the accelerator pedal a little

Rear engine mount braced
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314056.jpg

finished frame with suspension (missing the front and side brace bars)
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314053.jpg

Will be fitting a 4th mount when the engine is back in

cramped garage!!! have to move it all in and out each time :( :(
http://i146.photobucket.com/albums/r280/argr2006/Mini%2016v/PA314052.jpg

Lots and lots of little bits to do, Picked up an oil cooler and will fit next long with a soon to arive 6 pt roll cage - will post again when there is more to say...

quick question though - is it advisbale to get the suspension set up before I measure to get the drive shafts made? with a multi adjustable set up I can get is closeish with a tape measure, but am currently running a lot of negative camber at the front (front arms are on car adjustable - just havn't set it yet), how accurate would you say this need to be as I am not sure what side to side play I can have in the drive shafts!!
Also any one recommend any one who can cut and weld my shafts?

Any help much appreciated..