Engine

[Eveready1100]

Jan, you're pretty close to the mark, mate.
Over here, we have these thingy's that we call Tyre valves. Tire is the US way of spelling it.
Not a bad shot for a computer translator

[classiXS]

Hello Lumox 

3 years ago a m8 of mine decided to get his V-Max engine blasted with glass-beads, but didn`t want to take a perfectly running engine apart, so he came up with this solution.
The wooden covers over intake/outlets were sealed with silicone-gasket, and the rubberhose you can see sticking out between the heads is a tirevalve connected to the breatherhole of the engine, that way being able to keep pressure (he had 3 bar internally) inside the engine while getting it blasted.
The green stripes on the engine is rubbertape, mounted to avoid the polished parts of the engine to get blasted, thereby saving some polishing afterwards.
The engine runs flawlessly, and has done so with no sideeffects to be noticed ever since the blasting.



Regards Jan

PS. This been said, the 101% safe way will have to be the strip-down, since there can`t be any remains inside something which hasn`t an inside. 
PS. Don`t know if "tirevalve" really is a word, but it`s what i could come up with if i translated directly from danish to english, hope its understandable 

[lumox]

Thanks for those who replied. I'm going with the Soda Blasting. Mobile unit will come to me for $350. For me that's money well spent and less time for me to strip the paint off and polish. Lets hope it comes up as well as they say.

[Fred]

Mate,

STRIP IT

if you don't, the chances are that you will probably have to post op anyway, let alone the hours to make all the bungs and plates to TRY and seal it.

Think of this as a great opportunity to check the heart of the beast and maybe even chuck in a Wisco 1179 or 1198 kit.

[steptoe]

you'd be a game man,

 anything with that much pressure being blown at a motor is going to find a way in,
 unless you went to the trouble of making metal plates and sealed them to go over exh and int ports,
made a sealed bung for the oil seperator,
 and kept the left and right side covers on after removing the internals of each end, so seals weren't affected,,
let alone the external sealing edge of the gaskets being hammered

then some how cleaning the plug threads as you unwind them so you can put new ones in, without getting particles directly into rings

but even then you'd be taking a chance,,    IMHO

[beemeerr11]

Look at getting it Soda Blasted, much better outcome

Lou

[Jonesy]

Lumox,
Be Extremely careful doing this, Take the time to make up very well sealed blanking plates for the inlet and exhaust ports, Mask the site glass to avoid frosting, and seal off breather(s) with extreme care.

I've done one but it was stripped down and re-assembled w/out internals. I ended up getting a lot of blasting material out of it when I pulled it apart again, and I thought I'd blanked all the holes off  pretty well.

Seal it up as though you were going to throw it in the lake.

Did I mention to be careful and thorough.

[lumox]

Has anyone sandblasted an engine without stripping it down?
Engine is out of the frame and I don't want to strip it down as I'm one of those that ends up with left over bolts.