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Cleaning up carbs - general

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McCabe-Thiele (Ted):
I've just started cleaning my spare set of carbs for my 400 - they are almost fully dismantled - they have had a clean in my Ultrasound Bath at 65 deg using Allendale carb cleaner after initial general degreasing with clean petrol.

I am pleased with the overall results especially on the insides - needing a little extra cleaning with a soft tooth brush in a few areas.

The main body is a slightly coarser casting with a bit of a blue tinge whereas the carb bowl & top cap are a much smoother finish.

Whats the easiest way to give a polished finish to the top & bottom - I don't want to use paint or spend days polishing them?

Carb top cap by Macabe Thiele, on Flickr

Oddjob:
Quite a lot of ingrained oil and dirt on that carb top. Plus a fair amount of damage, the scratches and such aren't too bad to get rid of but the dents on the upper edge can be hard to either smooth out or get rid of.

If you try and buff it out the oil ingrained will surface after a short while and make the finish look like it's water damaged, to get a decent result you must keep going down until the alloy is a uniform grey in colour, Then you can polish it.

If you've got a Dremel it's easy to get some decent results.

Just bought 2 new Dremels in the last few days, getting quite a collection of them. The new ones are the Dremel 4300 and they are a big improvement of my old 4000s.

McCabe-Thiele (Ted):
Gawd knows how someone managed to put a row of small dings on the top surface of number 2 Carb top cover.
I've never owned a Dremel but it's on my next potential tool buying list. Forgive my ignorance but how do they work - are they a small D/A type pad or is it a cutting stone of some sort?

I have this vision of cutting right through soft Alluminium !

Bryanj:
Dremel is a high speed electric die grinder that you can attach small cutting discs to(that shatter and fly everywhere) grindstones and sanding discs.

Laverda Dave:
Dremels can be good and bad. Don't bother buying the wire brushes, they are useless, don't last more than a couple of minutes and the strands fly everywhere. As Bryan mentioned, the cutting discs are good but are prone to shattered if not used very gently. However, I wouldn't be without mine as they are very useful.

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