New GS1100 G Restoration Project. Rebuilding my Dad's bike

[Big T]

Great progress

But, that corrosion may need more than vapor blasting. I had to bead blast, then vapor blast some parts to get rid of the corrosion

[londonboards]

Engine Strip Down (1544 days since I started)

So the engine has to be completely stripped to be blasted and cleaned up. Some thing I didn't really want to do but since I have started it, I'm glad I'm doing it; it is so bad it's the only way to go.







Crank came out nicely. Pistons were very sooty for such a low mileage machine.





But skirts pretty much unmarked.



Then the head needed to be stripped:





Now I have all the cases, head and barrels (and a bunch of other bits) ready for blasting.

[londonboards]

Day 2,324 - The Return of Vapour Blasted Parts

OK it has been a while.

But here are the vapour blasted engine parts. Still need some sanding where the corrosion took hold but it's progress.











And a reminder of what it used to look like:

[Charlie G]

Nice to see you working and posting again.

[londonboards]

Yeah Charlie, I'm 6 years in on this one. Just got diverted by the GSXs and then I ended up with a Dyno! I've on done 300 miles on a bike this year (unless you count the 1,200 dyno runs I've made).

JAG came over for Christmas and she bump started the project again. All credit to her.

[Nessism]

Those parts look nice of course but hope the blind oil galley passages in the head were plugged up before blasting. I made the mistake of not plugging them on one blast job and it took me a long time before I was confident there was no longer grit in the passages. It might have been easier to just drill out the plugs and then use a brush.

[londonboards]

Those parts look nice of course but hope the blind oil galley passages in the head were plugged up before blasting. I made the mistake of not plugging them on one blast job and it took me a long time before I was confident there was no longer grit in the passages. It might have been easier to just drill out the plugs and then use a brush.

No they weren't unfortunately. Yes, now you have mentioned it, who knows what's lurking in there.

Do you mean in these passages?

[londonboards]

Oh I've just had a look. There is piles of media down there.

This is going to be a big job. Might just get those plugs drilled out.

[alke46]

I also made that same mistake and wow, what a PITA getting all that media out. Good thing these engines are bullet proof. Only time will tell if I didn't get it all out, but so far, so good.

[Nessism]

No they weren't unfortunately. Yes, now you have mentioned it, who knows what's lurking in there.

Do you mean in these passages?

YES!!!

It shouldn't be hard to drill out the plugs and thread the passages for plugs. Or you could turn some plugs if you have a lathe. Failing that I'd get some brake cleaner down those passages because residual oil will hold onto the grit. You need to degrease really well before the grit can be washed out. Maybe try bending the shooter straw on the brake cleaner and see if you can get it up into the passages? It can be done, it just takes time and care.

[londonboards]

Vapour Blasting Horror

Can't believe the stuff that's come out of my oil passageways after vapour blasting.

So I decided to drill out all the plugs in the cylinder head to expose the evil. Especially the dead end passageways.













A mate of mine, spun up some replacement plugs and I sent the engine to be painted.