VAPOR BLASTING.

[ziggy stardust]

And this.

Z

[ziggy stardust]

And finally this.

Z

[reed]

It took a lot of hard work to clean mine and Richard crankcases on the Bridgestone GTR.
So to have someone doing this service close will save me a lot of time.
Thanks.
Steve.   

 

[reed]

Today i was working on a set of( carbs 755A) 1975 Honda GL1000.
And to clean the carbs i use a ultrasonic cleaner so i just cleaned
One side so you can see the difference and this is all done with water.
Thanks.
Steve.

[scrambler]

Here is something off the vaporblasting.biz site that was linked earlier.

------------------------
You can save money on vaporblasting by sending in only your sand-cast and textured parts starting with the cylinder heads, cylinders, and crankcases. The die-cast parts or painted or polished sidecovers will never vaporblast as perfectly as parts with a sand-cast texture.  You can clean these yourself and save money.     
----------------------

So maybe most of the really pretty pictures you see are sand cast parts. Actually looking at a few of them it appears that way. The parts you see on Rice Relics are die cast. Still nice results though.

[moonpup]

Thanks for pointing that out scrambler, but now for my "newb" question of the day......how do you tell the difference between sand cast vs. die cast? Are certain parts always one or the other? And lastly, what parts on our bridgestones (if any) are sand cast?  

[scrambler]

Sand cast parts usually have a sandy or textured surface to them. Not always though depending on how they may have been finished. Some die cast parts may also have a texture cast into them.
I'm not 100% sure but I don't think any of the parts on a 350 would have been sand cast.

[redimport]

Hi,

One tell tale sign is to look at the core side of the part, usally the inside surface. Tooled / injected cast parts you will see ejector pin marks. Round pins that are used to eject the part from the mold. On sand cast parts there is no need for these as a wax part is placed into sand - mold is then heated to melt the wax and to seal the sand. After poring in the casting material and then cooled, the sand mold is just broken open. You can also see that the actually casting is a bit rougher than ejection cast parts. Usially wall sections are also a bit thicker.

The only part I have seen so far from a Bridgestone that is sand cast is the SR-175 carb covers. I am assuming that maybe the SR-100 right side cover is also sand cast.

later .. ray

[BS Mechanic]

The cylinders are sand cast.

[scrambler]

Some of the cylinders are sand cast and some are die cast. Depends on the model.

[reed]

Vapor blasting.
I have had sand cast parts and die cast parts vapor blasted with good results.
When i get the cases back i will take pictures outside so you can see the finish.
Thanks.
Steve.

[reed]

Honda GL 1000 1975 carbs all done and ready to go back on the motorcycle.
Thanks.
Steve.

[moonpup]

Good job as always Steve!

BTW..... here's a youtube video from Rice Relics.

http://www.youtube.com/watch?v=-jRkKrbR160&feature=youtu.be#

[scrambler]

that's nice, I might just have to send some stuff out.

[reed]

I met Johnathan Wise( Rice Relics). at my workshop today.
To look at some more engine parts to be Vapor blasted.
And i am going to put together a GTR display engine for
Shows etc, right now he is working on crankcases for me and we
Will have pictures next week,Johnathan phone number is
704 530 1009 when you see his work you will not be disappointed.
Thanks.
Steve.

[reed]

Picture of one of the old cylinders to be vapor blasted etc.
Thanks.
Steve.

[reed]

Picture of cylinder after its been vapor blasted.
Thanks.
Steve.

[reed]

Picture of the cylinder head that's been vapor blasted( note this was a old head off my GTR.)
Thanks.
Steve.
 

[reed]

Picture of one of the hubs this is the first clean.
Thanks.
Steve.

[reed]

Picture of the first clean on the crankcase etc.
Thanks.
Steve.