Tuesday, February 21, 2012

Engine Stripdown Progress

I've been making slow but steady progress with stripping the power unit. Its mostly coming apart fairly easily, the fasteners are generally in good condition and most of it looks not to have been abused too heavily. The last time I pulled down an unknown engine just about every part of it was either badly worn, or had been damaged by a ham-fisted amateur who should have left it alone.

The head came off relatively easily although there was a bit of corrosion around the studs which held it pretty tight. Its a bit odd though, it doesn't seem to match the rest of the engine. It has no green paint on it at all, it appears to have been painted in red oxide. It also shows some marks that appear to have been caused by abuse, and the valve stems look very worn. Examination of the casting numbers just furthers the mystery. No-one on any of the forums I've contacted can identify the head. The best guess is Morris Minor or Austin A30. It doesn't really matter, it looks exactly the same as an 850 head, so for the time being I'll do it up to go back on. I'm actually considering something a bit more special for the head down the track.

Morris Minor or Austin A30 or A35?


Who or what were BRITMO?
What does 2A3 AF2 AS3 mean?














I was very careful removing the timing gears, I'm well aware that the sides of the cam timing wheel are brittle and can easily be broken if removed carelessly. Once I'd removed it I discovered that it had been damaged and repaired in the past. Oh well, I thought, and went to find another in my spares pile. While washing the spare one, the side cracked out of it too, it must have been damaged when it was removed many years ago (what was I saying about ham fisted amateurs?). Now I'll need to find a replacement, but the good ones with the rubber chain tensioner rings are no longer available.

The original timing gear, that's what happens
when you lever them off with a screwdriver
My only spare timing gear, the
crack was invisible until I washed it















Saturday, January 14, 2012

Replacement Engine Found

Following from a lead at MiniFest back in November I collected a replacement power unit today. Neither the current engine or gearbox belong to the Traveller. The old engine is a 998cc from an Australian Deluxe, fitted to a gearbox from a later 850. The new engine would have originally been fitted to an Australian assembled (CKD)  Morris 850. It has the same 8AM-U-H engine number prefix as the original, and I believe the casting numbers (and hence the casting) are correct. Advice from the Early Mini Forum suggests that it dates from around January 1962, so is only 12 months younger than the Traveller, which makes it very close in style to the original one, having the same small tail crank, spring clutch and cone synchromesh. None of these features are actually very good, hence they were all phased out and improved soon after.

I believe that these are the same casting numbers
 that the Traveller would have had originally.
22A363 indicates a late cone synchro gearbox, phased out in 1962
I pulled the head off in a brief spare moment today and it looks a bit sooty inside, but it doesn't seem to have a noticeable ridge in the cylinder wall and seems to be on the standard bore, which is quite remarkable considering its 50 years old and an 850.

One nice thing is that this engine has a lot of the original bracketry and hardware missing from the other one, but I have all of the major parts that this one is missing.

I'm extremely grateful to Don C., who sold me the engine for a very reasonable price, largely because he appreciates the Traveller and what I'm trying to do with it. The engine was stored at Don's friend Rod's place, where I was treated to a display of several very nice Minis in a range of styles and colours, but all in excellent condition, plus a yard full of "spares" in varying states of saveability. Rod is a very friendly bloke, who obviously loves his Minis, so it was a pleasure to spend some time chatting after he'd helped me load the engine. Rod was quite happy for a complete stranger to drive off with his mate's engine without paying for it. I'll fix Don up next week. Its great to have met two excellent Mini men who want to share their passion and help out others, without first thinking of the profit line. I hope to be able to pay the favour forward.

Having this engine means that I can start the next stage of the restoration. Because I have so little spare time I'm reluctant to fly into stripping down the Traveller, in case I get stuck and have to leave it pulled apart forever. This engine is a bite-sized chunk I can be going on with while leaving the car intact.

Monday, November 7, 2011

Media Coverage

At MiniFest yesterday, I was summoned to the Traveller by a call over the PA. It was for a brief interview with a local journalist and to pose for a photo. Neither are something that I relish, but I did what I was told. There was quite a big article about MiniFest in the paper today, and on "The Mercury's" website. I think the photographer captured the Traveller's good side. Click on the image to see the full article.

I should say that I don't always wear loud shirts, but that's my Moke Californian shirt, custom made by the Moke Owners Association of Victoria. I only get it out on special occasions. The orange T-shirt is from Dean Wilhite's Dooderwear in the U.S. I have one of his Moke design and a Woody one. Click the buttons below to see the full design.





Sunday, November 6, 2011

A Grand Day Out


The Traveller holding Sarah's baloon
 I'm pleased to report that the Traveller behaved perfectly for the trip to MiniFest 2011. Barry, my father-in-law, followed me in my Moke as moral support and emergency tow vehicle. But it wasn't needed. The engine ran even better today, and giving it a run seemed to clear some of the cobwebs out. It was haemorrhaging oil, the exhaust was blowing and there's a lot of interior trim missing so it was noisier than it should have been, but I had a beaming smile as I drove it in. There are a few hills and a steep climb over the bridge, and it did get slowed down by them. I also realiased that I'd forgotten how to drive a 3 synchro gearbox, but they're minor issues.

This was the fifth MiniFest, the Mini Car Club of Tasmania organise the show at the same time every second year, and each time they seem to get bigger and better. The theme for the show is "Any Mini, any condition" but each show seems to have fewer rusty wrecks than the previous one, as they're replaced with shiny restored and original cars. My Traveller scrubbed up OK, but was still one of the worst looking. The paint is an old re-spray and is pretty poor, there are large areas that are flaking off and a lot of visible rust staining (although not much rust).

A nice early 850, in a traditional colour.
Its interesting to look at the cars and see how fashions have changed in restorations. A few years ago it was acceptable to paint Minis in lurid metallic colours, fit big wheels and do horrible things to the interior with weird choices in upholstery, but these days there are many more cars being repainted in their original colours and looking well kept rather than over restored. I like it that way.



The most Travellers ever seen together in Tasmania?
Two other Travellers attended, coincidentally both are green. The woody's owner recently moved to Tasmania from the ACT. It is nominally also a 1961 like mine, although there's precious little left from 1961. It has been re-shelled and fitted with the running gear from a late model injected Rover Cooper. The steel sided Traveller has been converted with all the running gear from an Australian 1275 LS, it seems pretty good mechanically, but I reckon that it really needs to be put right. James, the new owner agrees, but like me probably isn't in a position to rush it!


Mine's the orange one.
The day was unusually hot and being held in a large open area with no shade everyone got lightly toasted. It was great weather for Mokes and about 14 turned out. Barry didn't enjoy driving mine very much. The clutch is almost out of travel and he's not used to cars without power steering anymore.

The show ended with a ceremony to award a large number of trophies and I was pleased to be awarded "The car with the most potential". The guys presenting the trophies did wonder if this was a consolation prize.

MiniFest always ends with a cruise in convoy. In previous years it has been through the city, but this year was out of town on the highway. I'm not sure that it worked terribly well, and we all stopped in a very dubious location for a convoy photo, but it was still good fun. Barry and I took went in the moke, the Traveller's temporary permit didn't cover the convoy and it was further than I wanted to risk driving it.


A portion of the convoy at the photo stop. I was too lazy to walk to the front to try to get it all in.
 All in all it was a very successful event. I had a ball driving the Traveller and there was a lot of interest in it, I was photographed and interviewed by the local paper and I also got a couple of possible sources for a replacement 850 powerunit from the correct period.

Saturday, November 5, 2011

More Brake work and It Lives!




Look at that lovely stainless steel gleaming
I got the master cylinders and rear wheel cylinders back from being re-sleeved - the front wheel cylinders had been done previously. The quality of the work is excellent so they should be right to last another 50 years. I sent them off to Leon, whose business is appropriately named Quick Service Brakes. He apologised about being too busy to get to them immediately but still only took just over a fortnight to do them. We discussed what to do about the reservoirs. The two ports in the side of the master cylinders need to be drilled after the sleeve is inserted. This is usually done by drilling right through the side of the reservoir and soldering the hole up afterwards. The alternative is to un-solder the reservoir and put it back on later, but this is labour intensive and adds considerably to the price. We agreed that I'd take the reservoirs off and put them back on myself. This gave me the chance to clean them up and repair them while they were off.
Hexagon top master cylinders - looking a bit better than in the 'before' photo
 I refinished the master cylinders, not by plating but by tinning them with solder. It may sound odd, but all of my research into how to replicate the original dull tarnished light grey finish drew blanks. Everyone I spoke to said something like, "maybe its zinc", or "perhaps its some kind of cad". I consulted a local plater and he said, "I don't know what it is and I can't  replicate it". The breakthrough came when I was heating up the spare one to practice on. As I heated it, little silver beads of molten metal appeared out from under the dull grey finish. Not just on the tin-plate reservoir but from all over the cast iron body as well. I didn't have it hot enough to melt zinc, so It must have been solder. Thinking about it afterwards it does make some sense. Solder typically oxidises to a dull grey white finish over time, and the body would have needed to be tinned in order to solder the reservoir on. After a soak in my derusting bath and a thorough clean, I painted them with Kemtex B916 tinning compound and heated them until it melted. A wipe with a clean cloth and they were looking much better. I just need to work out how to encourage the grey tarnish to re-form quickly now. Soldering the reservoirs back on was a bit tricky but in the end I was pleased with the result. The reservoir from the brake master was pretty bad so I replaced it with one off a spare. As a result its much shinier, whereas the pitted clutch one looks fairly dull. Hopefully they'll even out over time.

New pistons, seals, bleed screws, stainless sleeve - better than new.
I had to solder up one of the original tin master cylinder caps. It doesn't look as good as it might, but I had no choice it was badly corroded and pin-holed in several places. Luckily I managed to get a good nearly new cap on ebay, for the brake master cylinder because the one that was on there crumbles when I undid it.

I figured new clevis were needed after seeing the one that came out
I rebuilt the rear wheel cylinders using new pistons ( a slightly embarrassing story I may reveal one day) and new seals and put the whole lot back together again. The master cylinders went in reasonably easily. I used R clips on the clevis pins which is much easier than messing about with split pins.

It was when I went to bleed them that the problems started. Firstly I discovered that the thread for the bleed screw in the driver's side front whelle cylinder had stripped out. With some tools loaned to me by the local thread repair specialist, I managed to get it working again by drilling and tapping it for a helicoil. It worked OK but weeps a little unless the bleed screw is really tight. I'm either going to have to replace it with a bleed screw insert, or get a new wheel cylinder. Once that was repaired, I discovered a serious leak where the front brake line meets the brake hose on the passenger side. It meant that the radiator had to come out again in order to tighten it up. The tube nut on the end of the brake line has been abused over the years and is rounded off, which makes it nearly impossible to tighten. When I recondition the subframe the brake line will be replaced so it looks like new tube nuts are needed too.

Gunson's Eezibleed hooked up - the black hose gets pressure from the spare tyre.


I eventually got it all bled, I bought a Gunson's Eezibleed, and it was excellent. I bled both the master cylinders on their own first, then connected them up and bled the clutch and brake systems. It was so easy, I could hardly believe it. It took a couple of goes around, firstly before adjusting the brakes, then again afterwards. They'll need adjusting after they've bedded in but are pretty good for now.


I spent the afternoon madly working to get the Traveller running well enough to drive to MiniFest 2011 tomorrow. Big  Mini shows only come around every two years here so they aren't to be missed. I had a few small problems getting it started and running smoothly, but managed to get it to run well enough to risk the trip. It needs a thorough tune up, but should be OK. The brakes are a little spongey still but aren't as bad as I expected. The Traveller is unregistered so I organised a temporary permit which covers me for the duration of the event. Today's road testing was done on my personal test track, of course.

Friday, October 14, 2011

A Little Bit of Progress

Single Leading Shoe Wheel Cylinders
I've been working on the braking system lately. The master cylinder and the rear wheel cylinders are away having stainless steel sleeves fitted, they were all quite pitted internally. I was lucky with the front wheel cylinders. On these early cars with single leading shoe front brakes, the front wheel cylinders are like a larger version of the rear ones. Naturally, they are an unusual size (15/16") and are quite hard to get now so that means expensive. Fortunately both of mine already had stainless sleeves inserted, so I cleaned them up and ran a hone through them to scrape out the rust staining, then put them back together with new seals sourced from Somerford Mini in the UK.
 
Nice new bits and pieces


When I stripped the brakes down I found that the hoses were very old and perished (perhaps  they were even the 50 year old originals) and most of the fasteners, springs etc were pretty badly corroded, so Somerford also supplied new brake springs, hoses and a number of the smaller hardware items for the brake system.  I managed to source some 'oversize' brake shoes. These are normal brake shoes that have been re-bonded with linings that are thicker than standard. They are a bit old fashioned now so were hard to find, luckily Minisport in South Australia still get them made. The drums are away being skimmed. Hopefully they have enough material left on them to be machined 60 thou over (the maximum legal oversize), so I can keep the date stamped original drums. SLS front brakes are notoriously bad so I want them to be as good as I can get them.

Not pretty, but hopefully functional
I surprised myself with how quickly I was able to re-assemble the shoes and springs back onto the hub. It has been several years since I did much mechanical work on Minis, but I guess I have put a lot of sets of brakes back together over the years. My fingers seemed to remember the little tricks and techniques even after all this time. The finished hub doesn't look very pretty - its just going to have to wait until later to have the cosmetic stuff done, but hopefully once the drums and master cylinders come  back and its all bled and adjusted they should be functional and long lasting.

Wednesday, August 17, 2011

Mini Estate History - Inception and Launch

BMC had long wheel base Mini variants in the pipeline even before the Mini sedans were released in 1959. The van, estates and pickup underwent development together. According to the Pressnell bible “The design was put together during 1959 in Dick Gallimore’s Longbridge body experimental shop, Doug Adams doing the essential of the work, to the directions of Issigonis, before passing the projects to John Sheppard to be drawn up.” Where the Mini sedan was to be a car for the district nurse, early Traveller advertisements show it as a car for the family man or even businessman. Estates were only to be available in one trim level, to match the more upmarket De-Luxe sedan of the time.

Presnell suggests that this may have been the first and only prototype, it is badged as an Austin which was common for most of the Mini prototypes developed at Longbridge. XOJ registration numbers were used in Birmingham between November 1958 and May 1959. At this stage the design is fairly complete. If you ignore the tacky aftermarket hubcaps the main differences are that it has squared off corners to the rear windows and one piece side windows. Photographs of it from the rear show that the doors are solidly framed all around - possibly made of sheet aluminium with a structural timber frame, like the Morris Minor Traveller.

BMC were of course a mongrel crossbreed of former competitors - primarily Austin and The Nuffield Group (Morris). At that time there was a large number of dealers who held either Morris or Austin concessions and the buying public still held faithfully to the model of car they'd always bought. As a result most BMC cars came in more than one flavour (six in the case of the 1100). The Mini estates escaped the worst of this badge engineering, being marketed as either a Morris Mini Traveller, or an Austin Se7en Countryman (later Austin Mini Countryman). Both names were drawn from previous estates in the Mini's ancestry, most obviously the Morris Minor Traveller and the Austin A30 Countryman.

1955 Austin A30 Countryman
1955 Morris Minor Traveller

For several years, Morris and Austin Mini sedans were built in separate plants, Cowley turned out Morrises while Longbridge turned out Austins. However most of the variant Mini models, including the coopers, pickups, vans and estates were assembled at Longbridge, regardless of marque. The bodies were built, painted and trimmed by Fisher and Ludlow at their factory in Castle Bromwich,  then transported to Longbridge by rail to have the mechanicals installed. In other words my Morris was built by Austin.

Theo Page's wonderful cut-away drawing
illustrated the Motorsport road test.
The Countryman and Traveller were both launched on the 16th of September 1960, but had been in production since March that year. They were generally well received by the press. John Bolster in Motorsport, 9 December 1960 liked the de luxe interior trim level of the Traveller and praised the smoother gear change and less choppy ride afforded by the longer wheel base, in comparison to his own Mini sedan. The Autocar, 23 September 1960 wrote "Already holding a reputation of being a great little car, this latest version will certainly enhance this assessment. For town use it remains easy to park, and is fast through traffic because of its compact dimensions. On the open road its performance is adequate to transport four people and luggage with considerable economy and ease.".  Bolster concluded his road test report with " This new small station wagon is an extremely attractive addition to the B.M.C. range. It is not spectacularly fast, but it keeps up a remarkable average speed over difficult roads. Many families will buy it as a second car, but it will turn out to be the sort of second car that soon takes first place in everybody's affections. At £623 it is more costly than the saloon but represents remarkable value.". I find it interesting that even in 1960 both reviewers tactfully described performance as "adequate" or "not spectacular". Its very common to hear that an 850cc Mini is underpowered for modern traffic conditions, but it looks as though that was the case even 50 years ago. Scanned copies of both road test articles are available from the downloadable documents section, to the left.

Traveller at Earls Court 1960 - Image courtesy www.photoarchives.co.uk
Following the press launch, the next big public display of both the Traveller and Countryman was at the London Motor Show at Earls Court in October 1960. The Traveller was on the Morris stand, mounted at a dramatic angle on a floodlit circular dais. Interestingly, the show car wears white-wall tyres with the paint scheme of white with a contrasting black roof. A two-tone colour scheme was never available from the factory, and anticipated the colour scheme of the Mini Supers and Coopers by almost a year.

Countryman sans "Miss Austin"
courtesy www.photoarchives.co.uk

The Countryman was displayed less dramatically, but perhaps equally eye catchingly, draped in a young model "Miss Austin", AKA Mandy Rice-Davies who went on to become a showgirl and friend of Christine Keeler of Profumo Affair infamy. Sadly the only picture I can find appears to have been taken after Miss Austin had finished for the day, however I did find a quote in  "An Affair of State":

 "The Mini was the most photographed car that year and many of the photographs show a cheeky, open-faced young girl with bobbed hair, thick black eyebrows, a turned-up nose and an appealing smile. Mandy was also photographed at receptions, cocktail parties, dinners, and on the way to lunch with the Mini's brilliant designer, Alex Issigonis."