Author Topic: Saving a 109 2a SW  (Read 2032 times)

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Offline Lo-Fi

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Re: Saving a 109 2a SW
« Reply #105 on: September 30, 2017, 04:19:01 pm »
If mine is anything to go by Toby, you may have a long road to getting it clean inside! Probably regular coolant flush with dishwasher/citric acid/Daz is the way to go. It'll all come out eventually :)

Thanks Horace, it's easy when all the tools and a good stock of metal is to hand. I don't half go through it, though! 6m lengths can easily disappear in a weekend.
I did think about a bottle brush, it might work well with core plugs removed. I always used de-ion as well, at least I know I'm not putting a load of disolved minerals in ready to come out and form the kind of sludge we're battling now!

That's a good tip about the Daz, I'll have a go with that Sam. Cleaning fluid was some citric based stuff I got with a Machine Mart parts washer years ago and had left over. Useless stuff really, I wouldn't even bother cleaning a floor with it. For this job where I was just blasting gunk out, it was fine, and I added a dishwasher tab in. The tab is actually quite aggressive and I wouldn't use on ali. I've bought some stuff from ebay to go on with now. £25 for 25 litres, diluteable up to 20:1. I'll let you know how it goes when an axle goes in!

I'm a bit concerned about the central heating flush on ali, Matt. I did toy with the idea - I need to get some, bung a block or two of various grades in and leave it a week. Should be fine on copper, brass, bronze and iron. Mag filter to pop in a hose is an interesting idea...


Work continues on the spot welder, which has achieved 1300 amps and pulls 40 amps off single phase mains. Still not quite enough, but does put nice welds into 2 x 1mm plates, which is enough for the bulkhead.  I'll pop a post in the Crazy Contraptions thread when I'm ready to do a write up.
Converting the V8 to viscous fan is going well too. As the water pump is way below centre of the rad in my setup, though not far enough so to add a pulley just for the fan, it's required some creative thinking. I've devised a low profile Z section V belt setup driven off the water pump nose to drive the fan, which is housed on a bearing mounted next to the water pump pulley. It's rather neat if I do say so myself.  A crank driven hydraulic gear pump with electric clutch is in the works too, and a capstan bollard has been delivered ready to mount to a Lofrans gearbox... But that's all off topic and deserves its own threads.... All in good time! :)

Work stopped as I had a cambelt to do on the Audi (what a pleasure German stuff is to work on) and I'm now packing for a little trip up to Callander in Scotland. Quotes are out for cutting and folding chassis, so hoping to be able to place an order when I get back. Very excited!