grit for qjet blasting?

what are you using, what have you used, what works what dont?

I am looking into a benchtop blaster for Qjets and small parts.

thanks!

 

I soak carbs in Berryman. I never blast them, but some people might.

I bought a bench top blaster at harbour freight and it has worked out fine for what we do, and it was really cheap.

 

The LAST thing a carburetor needs is sand 'n' grit blown into it. I just can't imagine how hard it would be to get all that grit back OUT of those tiny passages. Blasting cast iron throttle bodies "might" be OK; I'd expect aluminum and zinc castings to be eroded by the blasting media.

Chemical dip in my garage. I'm told that modern carb dip is not as potent as it once was. My stuff is getting to be ten years old; it seems to work well enough.

 

x3. Chemistry is the only way to go.

Devon

 

Thanks for the input.

you guys must be finding much better cores than me I will say that.

I dip my cores aplenty. Sometimes there is stuff that just wont come off without some labor (mostly exterior), and I think a blaster will do the trick better than anything I have tried yet.

I am going to try glass beads in 60-100 grit.

I will have to pay attention to getting all the "stuff" out of the passages, you are right.

The blaster will be great for a lot of other stuff too.

thanks again

 

Are you cold or hot dipping???

That berrys is suppose to work much better if you set it in an electric hot plate. Just be safe about it.

 

Also them sonic jewlery cleaners with berrys in it works great too, they also heat and vib.

 

in cliff ruggles book he says to put screws in the screw holes to keep grit out of the threads. i'm not real experanced at rebuilding but i have used HOT water and scrubbing with a brush with some degreasing dish soap. this has worked good enough for my needs. i spray carb cleaner through the air/fuel passages then compressed air.

 

cold.

 

Walnut shells would be a good thing for carb blasting (the most harmless) like Shurkey said I don't think you want sand.
Also you can use oven cleaners to clean them up; some of them are pretty strong, don't leave parts in the stuff too long or you might get rid of more than just grime :error:
Any place that sells blasting abrasives should have the walnut shells.

 

My suggestion is soda blasting. I have seen it at work. Not on carburetors, though. It is water soluble.

I don't think I would hesitate to use the soda. Eastwood has a soda blasting kit for sandblasters.

 

How about blasting and THEN soaking to clean any residue from the blasting?

 

I just tried out some 60-100 grit glass beads, and it did just great. Even a little slow if anything, though that may be an airflow thing.

Anyhow, the hard stuff comes off easy, the glass beads dont remove much material, and they are fine enough to really not even leave much of a "blasted" appearance.

Now to try to get all that stuff out of the carb LoL.

When I wear out this sand I just might try soda or walnut shells.

Thanks everyone for your input.