sand blasting block
 

What about sandblasting a engine block? Im going to use walnut shells so it dont pit, is harbor freight a place to buy? Thanks

Re: sand blasting block
 

I used oven cleaner on mine,made it look new! :thumbup:

Re: sand blasting block
 

I had trouble sourcing walnut shells in my old town but was able to find glass beads.
They worked great on snowmobile blocks and heads, just turn down the air pressure
so as not to shatter them.

Re: sand blasting block
 

No sand too abrasive. I also used glass beads although it left a slightly pitted surface. Be sure to mask off the cylinder well and blow ALL the passages out. I washed mine in soapy water and rinsed well also. I do like the oven cleaner idea.

Re: sand blasting block
 

Re: sand blasting block
 

If I were going to paint it I would use the fine sand, it would make the paint stick better. It does not remove much material unless you hammer it over and over while blasting.

Yeah, only do the outside!

Even that cheap spray can engine degreaser will take dirt and oil off, especially if you rinse it with a pressure washer closely.

Can you buy the button holes anywhere? I was at a place that used those. They can take the paint off coat by coat if they want. Did a lot of vettes and boats there.

Re: sand blasting block
 

If you've ever been on a tour of the Harley Davidson plant in York PA, you would have seen that they use walnut shells to strip rejected painted parts.

Re: sand blasting block
 

sounds dumb what are button holes? I never did much paint stripping, thanks

Re: sand blasting block
 

Pretty much plastic beads, like the holes out of buttons that is about what size they are. GM used to warranty paint problems and recommended you only use that process to remove the factory paint. It was the only way to leave the factory primer (alpo?) on there. They did not want that primer removed, not even for body damage. We did work for a GM dealer at the time. I don't know if they still do that, but we had to send out vehicles to get the whole thing stripped that way when the entire car was to be repainted.

Re: sand blasting block
 

i blasted my block today with glass beads it came out great , just a little pited, i dont think even the new ones are real smooth , im sure there casted up, some engine paint on it and it will be like new, thanks.