Blast cabinet on cast aluminum?

[gearheads78]

Looking for advice from those of you that have experience with this. I have several items like a cast intake and some brackets that I want to look new as cast. What have you found to be the best media for this? Thanks

[67King]

I would think walnut shells. They are very effective in cleaning up cylinder head ports on newer cars with direct injection. Done it 3 times to my car, with no sign of any damage to teh aluminum.

[btmatt]

second crushed walnut shells. I blasted some corvette valve covers many moons ago and came out great

[JustJohn]

Walnut shells are also what they use to clean carbon deposits off aluminum GDI cylinder heads, while still in the car.

[WallaceMFG]

We've used crushed glass in our cabinet with good results. You can get it cheap at Harbor Freight.

[BonzoHansen]

I used black beauty on cast intake and gm serp brackets. Came out fine.

[minendrews68]

I like the results if glass bead media.