SOHC.co.uk Forums > CB500/550

Getting top end vapor blasted. Leave valve guides in?

<< < (2/4) > >>

Sesman:
Hi, Alex.

I stripped the head except for the guides. Plus one on removing the valve spring seating rings. I used wooden dowels and wax to block all channels inside the head and instructed the blaster to treat the outside only. I then dried the head for several days in the airing cupboard and cleaned the head with a high pressure air line. I then socked the head in very hot soapy water, jet washed and repeated the drying and blasting routine.

Plus one on Tiggers advice on the oil channel if the ownership of the head is in question or if you suspect blast media may have entered the gallery.

Just saying what worked for me. If in doubt, clean  and clean again.

alexdecker:
I will give it a couple of thorough cleanings when getting the parts back. I don't have a compressor, so using nylon wire brushes through the oil channels and other places. For drying, I was actually planning throwing it on the oven on low temp and just let it dry that why. Shouldn't be anything wrong with that, right?

Do people usually vapor clean their carburettors? On many pics I've noticed that the usually don't get blasted. Is that not good practice?

Sesman:
Yes, oven is fine. I doubt you will be able to pass fine brushes through the cam bearing oil galleries?

Vapour blasting carbs seems to be trendy, but I prefer to chemically clean using ultrasonics. I guess it depends what state they are in to start with.

Again, it’s all personal preference.

alexdecker:
Mmh. The more I read about vapor blasting, the more hassle it seems to be. I can see how nice everything comes out, but the chance of ruining the engine but not cleaning properly has me a little worried I must admit.

What are the options for going the paint route? I degreased the bottom end recently, and this is what I'm left with. Quite a lot of corrosion, and in those hard to reach places under the oil filter and between fins. Scotch brite and a Dremel? Or is there some more clever solution to it?

murdock:
en vez de perlas de vidrio utiliza  bicarbonato de sodio luego solo agua y jabon , no hace falta secar el bloque en un horno , al fin y al cabo es solo un poco de aluminio , tambien suele usarse creolina para limpiar carburadores y bloques de aluminio


instead of glass beads use baking soda then just soap and water, there is no need to dry the block in an oven, after all it is just a bit of aluminium, creolin is also often used to clean carburettors and aluminium blocks.

Navigation

[0] Message Index

[#] Next page

[*] Previous page