SOHC.co.uk Forums > CB350/400
CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE - NOW COMPLETE
Moorey:
They look very nice. Do you do any prep work before sending them for re zincing.
Nurse Julie:
--- Quote from: rozabikes on April 27, 2018, 08:25:43 AM ---So impressed Julie. Carbs in my mind are the hardest bit of any on these bikes to strip and bebuild.
--- End quote ---
They are a bit of a jigsaw Tim. I suppose it's one of those jobs where it all makes sense the more often you do them......but I won't be doing any again in a hurry, I almost had to start taking Valium !!!
Nurse Julie:
--- Quote from: moorey on April 27, 2018, 08:31:58 AM ---They look very nice. Do you do any prep work before sending them for re zincing.
--- End quote ---
De grease and then wire brush every single part to clean all the s**t out of the threads and under bolt heads, in nooks and crannies etc. We actually do the de greasing in a cement mixer (easier this way with the quantity we have to do each time) with traffic film remover, fairy liquid, hot water and builders sand.
Moorey:
Does this just clean them or does the sand also remove the original plating. How long in the mixer roughly.?
Nurse Julie:
--- Quote from: moorey on April 27, 2018, 04:38:30 PM ---Does this just clean them or does the sand also remove the original plating. How long in the mixer roughly.?
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No, this process cleans all the dirt/ grease etc off of the parts. Put in cement mixer fir about 20 mins.The wire brushing, preferably electric wire wheel, removes any rust and then when the platers put the parts through the pickling process, that's what removed the old zinc. You can either have them 'wired' for zincing if only a few parts or if a few Kg they put them in a tumbler all together. Tumbling is cheaper if you have a load to do.
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