Can a block be sandblasted after machine work is done?

[svtfast]

Smart guy me got the machine work done before stripping the block. I found a place yesterday that can do the line boring that I need done but should I get my block sandblaster now or should I wait till after the line boring is done?

What about glass beading too? Any better or worse?

[Tuomas]

Blast it before boring.Pack and seal it as good as possible so that you don't find any blasting material after.

[svtfast]

Couldnt I just wash the block off after the blasting? I think that would be easier than trying to cover up every hole. The tranny housing I just did was a pain in the ass.

[MainstreaM]

Get it hot tanked. It will come out nice and clean without the worry of sand getting in every crack and crevice. If you feel you must blast it, have it soda blasted. The Soda is water soluble so it will come out when you clean the block.

Kane

[mazda terd box]

you do not wanna sand blast it!! most people get it hot tanked and then glass bead'ed

[Turpro]

If you blast it blast before doing the machining and use something that won't harm metal. I'd use a paint stripper before even considering any blasting.

[Skuce]

Soda blasting will work. It strips paint and "light" rust. It's also a light enough media that it doesn't cause dimensional change to the substrate. It does take longer than Aluminum Oxide or Glass Bead....but cleanup is a helluva lot easier.

[neuspeedescort]

hot tanking should be a factor in all boring. it shouldn't just be something they suggest.


NEUMAN

[Shades]

Hot tanking = gets off grease and mud, won't get off rust
Soda blasting = won't get off grease and mud without making more mud, gets off mild rust
Sand blasting = won't get off grease and mud without making more mud, gets off all rust... too abrasive, don't do it
Glass beading = won't get off grease and mud without making more mud, gets off all rust

Basically what I did to mine was hot tank to get off the grease and mud... then when it's dry then you glass bead it, MAKING SURE YOU TAKE OUT ALL BOLTS AND PLUGS!!! When are you done, then you clean it 1000 times cause if one grain of glass gets into your oil... cry.

... and no you should NOT glassbead anything after it is machined.

1. CLEAN
2. MACHINE
3. WASH

[Shades]

Just JET WASHED... basically a giant dishwasher.



HOT TANKED and dried off... blow out all the bolt holes and oil galleries, no water allowed in the glass beader!



GLASS BEADED... very important to wash ALL the glass outta the block, unless you like rebuilding engines.




NOTE: Hit up my thread below in my signature... that's the proper way to building my race engine.

[cat34evr]

How do you wash all of the blast media out of the block? I mean, there are about a million places for grains of sand to hide.

[Shades]

We put it in the jet wash (giant parts washer) and then we pressure washed all the holes with water.

[almighty4wd]

We put it in the jet wash (giant parts washer) and then we pressure washed all the holes with water.

that's what I did to mine. Gets it very clean, but doesn't clean the paint or rust off the block, so it still looks ugly. Shades, how would a steam cleaner/jet wash compare to a hot tank? about the same?

[Turpro]

I knew shades would make his way to this thread. He's like a drug dog only he sniffs out motor building threads lol.

[Shades]

I knew shades would make his way to this thread. He's like a drug dog only he sniffs out motor building threads lol.

{SNIFF... SNIFF SNIFF} HOOOOOOOOOOOOOOOOOOOOOOOWL!... {PEE ON SOMEONE'S TIRES}

that's what I did to mine. Gets it very clean, but doesn't clean the paint or rust off the block, so it still looks ugly. Shades, how would a steam cleaner/jet wash compare to a hot tank? about the same?

Well if you hot tank something you still have all the costic soda all over the block... it's kinda a given to wash the block off, either pressure wash with hot water, or jet wash it. Jet wash a machine shop has to do... pressure wash can be done on your own.