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Originally Posted by Robert Dentico
Originally Posted by Boomer
Bead blasting will take the casting skin off and the first time you touch it with a greasy finger it will leave a grease print. I prefer vapor blasting, not as agressive.


Bill B...

I'll wear rubber gloves... wink

This head has an odd paint on it, will paint remover do the same thing to the surface...? Any way to seal the bead blasted surface...?

If not, I'll be careful...

Thanks,
rd__


I don’t like abrasive on any engine castings, but have never tried vapour blasting. The best results I have ever seen was using an industrial aircraft paint stripper. Not the Aircraft paint stripper available at the parts stores… especially the one which says “not for stripping aircraft”. The right stuff can be hard to find. I wouldn’t use anything with caustic soda. There is a local Vincent twin that used to be a matching numbers bike until a previous owner took the cases to a rad shop and they left the cases in over night.

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All good points, folks. I have talked to a local fellow that does vapor blasting, he gave me a good education on the subject regarding the finish as you all have.

Luckily the head(s) will fit in the larger ultrasonic cleaner, I will treat that with the citric acid, blast the head, give it a good bath, blow it out, maybe a second bath and then take it over to have the vapor blasting done.

Thanks all, much appreciate the input.

Rob

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"They told me I was gonna have to work for a livin' but all I wanna do is Ride" - Jackson Browne

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The final rinse…..


[Linked Image from live.staticflickr.com]0F0DEAB7-9C56-4BA4-A22C-8B9AB0984BD4 by First Last, on Flickr

Last edited by Cyborg; 03/22/23 2:42 am.
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Your either single or sneaky. I'm single. I use the oven to dry M/C parts.


1968 T120R
1972 T120RV
Any advice given is without a warranty expressed or implied.
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Oddly enough I’m ( still) married to a wonderful women who I refer to as my human credential. I’m not sure what they are, but I must have some redeeming qualities if she married me.

I only put things in there for the final cleaning, but it does stink sometimes if I’ve used stripper at some point. They do get rinsed off with a pressure washer before they go in the dishwasher. I do try and keep it to a minimum. Usually only heads and cases.
When detergent is used, it can alter (darkens) the surface so use caution. I find that desirable sometimes….gives the aluminum an aged look, but it’s a bit of a crap shoot depending on the detergent you use.
She’s heading off this morning to visit her mother for 6 days….. I will be completely unsupervised.

Ps… I did buy a $10.00 oven off VerageSale for the garage in order to maintain the marital bliss.

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