1971 VW Type 3 Fastback

For Type 3 and 4 restoration projects, interesting history, adventure trips etc
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937carrera
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Location: North Yorkshire

Re: 1971 VW Type 3 Fastback

Post by 937carrera » 6th July 2017 - 9:11pm

Oh well, if you don't want to take credit for the work, better tell us about the kit (I have a 412 fasty and T25 to get round to) :)
David
1974 412LS Variant
1973 412LE 4 door Fastback / Saloon

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broady_6
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Re: 1971 VW Type 3 Fastback

Post by broady_6 » 9th July 2017 - 10:58am

Heres the bit of kit, you cant buy it any more unfortunately

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The sultan of swing

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broady_6
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Re: 1971 VW Type 3 Fastback

Post by broady_6 » 16th July 2017 - 11:38am

Time ive gave you ugly lot another update, With them holes filled up I decided to do something more mechanical. The NSF was more or less on the legal limit so I got out one of the wheels I painted a long time ago and fitted it with one of my spare tyres. I dont really like them as much as I thought I did. It has been about 4 years though. Never mind eh, its road legal so it fits the bit for this summer.

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One more welding job was needed. So this week I hit it hard, in from work changed an straight out there till 9 4 nights in a row.

My spare bonnet was in good order apart from this

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Not sure why it decided to fall apart there and no where else, but it'll do me for a quick repair. I attempted to make this from two pieces, the lower with a little drain channel and the top with its edges folder round to grip it.

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As you can see, with the lower skin removed there really wasn't much of a top skin left. Luckily there was enough to use as a pattern.

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To get the folds ive got a piece of plate which I clamped it under and bent it round.

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Quite a rough shape, but after some thumping I got it roughly right

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But not quite, the radii is just a little too tight and it catches on the scuttle. Ive also found this bonnet is about 5mm longer than my old one, the missus had to come and help me free it off as it stuck in the catch, so in order for it to fitch the bonnet catch is so far back it hits the scuttle panel when I open it. Something else on the body work list for winter.

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They don't look as terrible as I thought once on the car, but I still dont like them.

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Lots of other little jobs have happened, re calibrated my speedo, fitted seats and belt, cleaned up a little bit of wiring. I give the engine a light service, the old oil want pretty. Then I ended up here

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And the old girl passed, though it was running a bit rough on the way there, it would cruse ok but if you went passed half throttle it would hesitate, as if the accelerator circuit wasnt operating. So last night, having checked the tappets, points and timing I pulled the carbs to bits. and found old crappy petrol lumps.

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With them cleaned out and reinstalled it runs a lot better, but its still a bit iffy, I know ive got leaky carb spindles so that's like the cause.As it was gone 10 last night I thought id leave it for this afternoon to tune it up.
The sultan of swing

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Chino
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Location: Cheadle, Cheshire

Re: 1971 VW Type 3 Fastback

Post by Chino » 17th July 2017 - 8:49am

Great stuff, must be nice to be back on the road after all that? :)

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broady_6
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Re: 1971 VW Type 3 Fastback

Post by broady_6 » 18th July 2017 - 10:33pm

you'd have thought so wouldn't you, the engine still ran poorly at best, 50mph was flogging it hard, like it was driving up hill. I took the distributor out and checked it over, it was very rattly so I assumed the mechanical advance had failed. I got a second one out of my stash, the dual vac can had failed. So I made a good one of the two. Having checked the vac worked and the plate moved freely I fitted it and timed it exactly as per the book to 0 degrees, the engine sounded better, but drove even worse. Kangarooing and in able to get past 2nd gear. So I advanced the timing to what I thought was 7.5 degrees, off I went and with in 10 miles it got a bit smokey, fortunately I was nearly home, I parked up and left it too cool. I suspected a thermostat failure, but the flaps were fully open.

One it was cooled I got the strobe out again and it read 12.5 at idle. Woops!!!

Anyway, no damage was done but it still didn't run well and I was starting to remember why I lost interest in the car. Still certain the issue was ignition related I had another dig in my distributor box and got an SVDA out. Cleaned, checked, tested and fitted. I blanked the manifold port, timed the dissy to 7.5, checked max advance and road tested. It drove as I remember all those years ago, 60mph was effortless and the engine stayed cool.

So questions that remain in answered, where should the vacuum hoses go? I have one from the vacuum side to the port on the carburettor as you would on an SVDA, the retard side to the port on the manifold. both vac cans work and when I check wit ha strobe its time correctly and as I rev the engine the advance is smooth and levels off nicely.

Another small job which needed some attention was the fuel sender, after my hard work rebuilding it, it read at half scale. so I checked the internal earth to find it was poor. I cleaned the contact for this and re-soldered the nichrome wire, it now reads about bang on. which is as good as a new one!

a decent road test in order and proper tune of the engine. then just a few small jobs to tidy up loose ends and rattles for the summer
The sultan of swing

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broady_6
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Re: 1971 VW Type 3 Fastback

Post by broady_6 » 22nd July 2017 - 1:15pm

Just a small update for you all, something odd going on with the steering, I centred the steering wheel. But after covering a few miles its gone off centre again. That combined with the front end knock suggests I need to get under there and find out whats going on. Weirdly on the road it feels very smooth and under control. But something to do in the coming weeks.

With the need for an easy job and having use gaffer tape to blank off the fan housing to get me on the road, I fitted this elbows.

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Although its the height of the English summer, you never want to be with out heating :D

Another small job for a sunny evening, the horn occasional sounds when turning, I assume the wires bare somewhere and catch so ill pop the wheel off and check. Small jobs make me look forward to the work.
The sultan of swing

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Editor
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Re: 1971 VW Type 3 Fastback

Post by Editor » 23rd July 2017 - 1:51am

Check there's a small gap between the wheel and the switch housing below. There should be a couple of mm gap, which you can adjust by loosening the big allen screws in the housing and moving it down slightly. Mine has a tendency to sound if I have to stop suddenly, and my arms push on the steering wheel.
If you remove the wheel, make sure it is centred before, and put it back in the same position or the self-cancelling lugs can get broken.

BTW, those elbows prevent cooling air being lost from the fan area - they are very important.
Dave.

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broady_6
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Re: 1971 VW Type 3 Fastback

Post by broady_6 » 23rd July 2017 - 6:43am

Ah, I will go for some steering wheel adjustment! Yes I set up the front suspension geometry with my optical tracking gear, then removes the steering wheel to centre it. It drove 30 miles bang on, now its rotated anti clockwise.

Yer, as a very temporary measure id blanked the fan with gaffer tape. But I didn't leave it too long to fit these elbows, knowing how important they are 😃
The sultan of swing

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