Best way to prep engine for repaint - engine complete

martinz1000r · #1 PostAuthor: **martinz1000r** » Wed Feb 01, 2012 3:13 pm

Need to restore the finish on my Z900 engine. It's out the frame but I dont really want to strip it down as it runs and is oil tight and I know based on history if I start mucking about it wont be!

It's current black paint is peeling and exposed alloy starting to fur. If it were in bits I would have vapour blasted but what options for quick and easy way to get a surface ready for paint on a whole engine?

#2 PostAuthor: **paul doran** » Wed Feb 01, 2012 4:24 pm

Martin I would opt for Soda Blasting as it is harmless to internal parts
I am about to Soda blast a Z1 engine and I am going to do it as a complete lump

redzee · #3 PostAuthor: **redzee** » Wed Feb 01, 2012 9:45 pm

paul doran wrote:Martin I would opt for Soda Blasting as it is harmless to internal parts
I am about to Soda blast a Z1 engine and I am going to do it as a complete lump

Evening Guys,
I have exactly the same dilemma. Can anyone suggest where I might find this service in the West Midlands area?
Cheers

GUYZED · #4 PostAuthor: **GUYZED** » Wed Feb 01, 2012 11:33 pm

Martin...have a look a my Z650 rebuild (Z650 RESURRECTION) 1st and 2nd pages.

malmojoe · #5 PostAuthor: **malmojoe** » Thu Feb 02, 2012 12:20 pm

"ECOSTRIP" SODIUM BICARBONATE 25KG - Â£18
http://www.ebay.co.uk/itm/360302919418?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

blasting gun Â£13
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250981441697

you could do it outside, or if you've got an air fed mask, buy a cheap small tent with a groundsheet, get in, zip it up and shove the hover through the door.

martinz1000r · #6 PostAuthor: **martinz1000r** » Thu Feb 02, 2012 2:31 pm

nice idea. postage on the bicarb of soda pretty expensive but bound to be a more local supplier

KWACKERZ1 · #7 PostAuthor: **KWACKERZ1** » Fri Feb 03, 2012 10:40 am

Redzee

Sutton soda blasters near the belfy, Andy has just done some wheels for me its very gentle on the ally and just takes the paint off.

http://www.suttonsodablasting.co.uk/

Jim Goose · #8 PostAuthor: **Jim Goose** » Fri Feb 03, 2012 1:57 pm

paul doran wrote:Martin I would opt for Soda Blasting as it is harmless to internal parts
I am about to Soda blast a Z1 engine and I am going to do it as a complete lump

Paul
You going to do this yourself?
I like malmojoe DIY Idea.
Pleae post some photo's of before and after.
Very interested in seing the end result!!

I made a home made one as per the attached youtube video. You need a lot of pressure behind the gun.
Small compressor won't do it.

http://www.youtube.com/watch?v=YI_Bnl6l-OY

#9 PostAuthor: **paul doran** » Fri Feb 03, 2012 3:04 pm

Jim yes I bought a soda blasting Gun and I have a blast cabinet and I bought a lot of media Yesterday

Jim Goose · #10 PostAuthor: **Jim Goose** » Fri Feb 03, 2012 3:30 pm

paul doran wrote:Jim yes I bought a soda blasting Gun and I have a blast cabinet and I bought a lot of media Yesterday

mmm.... Might be a money making venture for you!!

knut · #11 PostAuthor: **knut** » Fri Feb 03, 2012 10:59 pm

looking forward to seeing the results paul,
there,s a guy down here doing it now but i think
he,s expensive,
i,ve plenty of bits here if you want to experiment on them :cheek

redzee · #12 PostAuthor: **redzee** » Sat Feb 04, 2012 10:08 am

KWACKERZ1 wrote:Redzee

Sutton soda blasters near the belfy, Andy has just done some wheels for me its very gentle on the ally and just takes the paint off.

http://www.suttonsodablasting.co.uk/

Cheers KWACKERZ1

debben1 · #13 PostAuthor: **debben1** » Sat Feb 04, 2012 10:43 am

We just had some experience with soda blasting engine parts (stripped down) and it does take a lot of cleaning afterwards, its not so easily disolvable as I was led to believe and after several washes and blasting with air cycles I still have had a problem with traces of the soda reacting with the paint, I managed to get a result by scotch briting the internal and external surfaces and drying with a hot air gun then washing of in a tank and allowing to dry over a few days, not sure we will use this process any more so it looks like its back to determined scrubbing with scotch brite and washing blowing and drying, any traces of grease or dirt under the paint will prevent the paint staying on.

malmojoe · #14 PostAuthor: **malmojoe** » Sat Feb 04, 2012 10:57 am

I have read somewhere, that many 'soda blast media' is cut with anti cakeing agents such as aluminum oxide and this stuff leaves a residue. The reason they do this is because soda blasting requires very dry air, the slightest moisture starts to dissolve it.
Pure food grade sodium bicarbonate is 100% soluable in water and should easily wash off completely. I ordered some of this from a guy in Devon on Amazon, but it never arrived, he never answered my mails, and eventually I got my money back.
I'm guessing the stuff in the link I posted above, is industrial blast media and may therefore has additives.

#15 PostAuthor: **Ginger Bear** » Thu Feb 09, 2012 10:09 am

Mmmmmmm, just ordered a bag of 'Ecostrip' & have just read the last couple of posts. :oops:

I'll report back in due coarse, but I'm now feeling a bit more sceptical about it. :??

Best way to prep engine for repaint - engine complete

Best way to prep engine for repaint - engine complete

soda.

Re: soda.

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