Shot peened how do get them beads out?

[g4ebguy90]

Ive had this problem on my block and head, them little beads.. Whats the best way to get them out of the threads. Im just having a little trouble. My last attempt was a tap, magnetic stick, and finally air gun. Any other better way i cant think of...

i put oil on the tap but it seemed to make it worse

 

[2GFWDbeast]

http://www.metalimprovement.com//pr... Green Book - 9th edition - Complete Book.pdf You might find what your looking for in here.

 

[g4ebguy90]

, well i read some of it, and yeh didnt find out how to remove it, but i did learn about the process and why its done

 

[twicks69]

What specific material did you use for media blasting? I am assuming you meant this, and not shot-peening as there is no use for shot-peening a block or cast aluminum cylinder head.

Did you use glass bead, white or aluminum oxide, silicon carbide, or another material?

More than likely, you will be using several different sized bristle brushes along with alot of brake-cleaner, an air gun (short or long tip nozzle) and an air compressor with alot of time spent cleaning out all the passages.

Be sure to thoroughly clean all your oil galleys, coolant jacket, oil squirters (if you are running them), etc.

 

[3kgt2nv]

soak it in a parts washer for a little then get a can of brake clean and a tooth brush out. if it was glass beads they will wreck your head and cylinders if you dont get them out. best way would be to hot tank them.

 

[twicks69]

Agreed.

 

[Justin_l_]

Hot tank will be the most time effective way to clean media out of the block.

 

[g4ebguy90]

i was told the block would rust with hot tank.... and yea apprently it is media blast......... kinda seems like the same thing. If i remember right, they were very very tiny ball bearing looking things, Silver and seemed quite dense.

whats the diff, between media blasting and shot peen?

 

[3kgt2nv]

media blasting is for surface cleaning.

Shot peening is a cold working process used to produce a compressive residual stress layer and modify mechanical properties of metals. It entails impacting a surface with shot (round metallic, glass or ceramic particles) with force sufficient to create plastic deformation.

hot tanking will cause the block to rust if you dont reoil the cylinders after because it boils everything out of the block including the oil and grease.

 

[g4ebguy90]

ive already had it baked...... if that amounts to anything.... i think ill just keep cleaning the threads.... ill talk to my teacher about hot tank to get those beads out.... its just the dam threads like 1 for the main girdle and for the head bolts.

 

[3kgt2nv]

There are a lot more than you think. they are like roaches. If you see one there are hundreds.

Baking just dries everything out and is normally used in conjunction whit another cleaning method.