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Project CB350F
Laverda Dave:
That's a seriously impressive turnaround time. I've been quoted THREE months by the vapour blaster I was going to use. Are you going to paint them, if you leave them bare they will corrode, ask me how I know this ::). When I restored the blue 400/4 I had the cases vapour blasted. Apparently, so I've been told, the vapour blasting process leaves a finish on the casting that protects against corrosion. I can confirm in the three years I had the 400 after the restoration the cases showed absolutely no signs of any corrosion anywhere.
magpie114:
I know I was pleasantly shocked. Its a small company and I might have caught them in a quiet period but he seemed very interested in what I was doing. Good point about corrosion, I'm hoping to sort out soda blasting and painting fairly soon.
magpie114:
Quite a few unfinished jobs at the moment, forks and shocks are ready to assemble when I get the various bits returned from the chrome platers, probably not until end of January. Cases to paint, but I’m waiting for a warmish spell as its very cold in the garage at the moment. I’ve decided to make a start on the carbs which were filthy but underneath the oil and dirt looked reasonably ok.
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Removing the float bowls revealed lots of varnish. I decided to work on the carbs in pairs and take it slowly as I’m not familiar with them. One carb (#4) came apart easily but #3 throttle slide was stuck solid and was eventually freed using lots of carb cleaner over a couple of days. Jets cleaned up ok in the ultrasonic bath. The float bowls took a bit of work to remove the last traces of varnish.
I started on #1 and #2 yesterday and both are really gummed up, throttle slides and and floats were stuck fast on both. Lots of varnish in both bowls. Interestingly, #1 was the most gummed up, decreasing progressively to #4 which was the least - probably due to how the bike was stored.
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The floats freed up after a few minutes with carb cleaner but the rest will take a little more time. The float pins are stuck fast.
A number of parts will go to the platers for zinc plating this week and I’m hoping I can get them back before the holidays.
magpie114:
Well the chrome plating came back to my surprise after a little over 2 weeks. I used Ashfords and the results look good. The springs aren't perfect on the insides but I fully expected that. I didn't realise that they subbed work out until I found an old thread on here. The zinc plater I've used has recommended Quality Chrome in Hull.
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The carbs have cleaned up well despite the heavy varnish/tar deposits. I've retained the pilot jet, needle jet and needle but had to the replace main jet float needle + seat and fuel/airscrew with Keyster parts. I found a crack in one of the floats while setting the level so I'll have to wait until after the holidays to order a replacement and complete the assembly. Given its age I'm not going to try repairing it with epoxy.
I got one nos rear damper and paired it with the better of the two originals which has cleaned up well. I've loosely assembled the frame for the time being to save space but will need to take it apart again when I'm ready to install the engine. I'll be doing that on my own so I intend to lay the engine on its side and lower the frame over it. Unfortunately the bracket for the clocks has been powder coated in gloss black - I forgot to ask for it in satin black.
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The fork stanchions were derusted using Evaporust, I'm really surprised they are only partially chrome plated. Will assemble them after the Christmas period...can't see me getting much garage time until then.
Johnny4428:
Lovely working there. Look at that shiny bits! Great to see it coming together too.
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