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Hi

Found a box of these in a recent purchase - quite upsetting!

Quite a few of them are aeg 530 (ST 649 i think) and im certain all of them are/where never used - he had wrapped them in a thin plastic covering

Any ideas on (if I can remove the rust via whatever means) will more importantly will they still be ok to use?

Im in no way an engineer or have an engineering experience!

Your advice kindly appreciated

Paul

A professional machine shop could linish them. As long as there is no pitting they'll come up like new. You could do it yourself with very fine wet and dry paper, but if there us any wear on them its probably better to have them done professionally so that they can measure them and tell if they are any good.

Tim

If there's a tiny amount of rust & it hasn't pitted too badly you can probably get away with it. But in my opinion most of the ones illustrated are scrappy dappy doo.

I'd have them dipped or bead blasted to remove all the rust. Then you'll easily see if they are pitted or not. If they are, and are not regrinds. then they could be useful cores....
Not what you wanted to hear I guess

Good point, thought about cores & then forgot again.To remove the rust soak them in HCL brick / concrete cleaner for about 20 minutes. Then transfer them into a fairly dilute caustic soda bath. Then dry thoroughly & oil.This will remove all vestiges of rust so they canh be assessed more easily.

Update spoke with local engineering company and they can polish them with a machine at £10 a hit

I have 3 others in bmc/leyland boxes so 13 in total

I think i will try Marks idea on the worst one first to see what results i get

Thanks

P

Mark

Vestiges! you have had your weetabix today!

P

Vapour blast them, do not acid them as it will soften the surface hardening, assess the contact area for
consistancy of contact, IE the follower will always be rideing on lets say 80% supported surface area, (that can be an area thats scattered with small pits but still can be bridged at 80%) then they will be ok.
Look at the pitting as an oil entrapment which helps lube the remaining 80%. not the best cams but we can use them.

Took another look at your pics and it looks like someone as cleaned/blasted/acid'ed these already before, if so they may already have been damaged beyond salvage.I may be wrong but just check it out before you spend your money.

Hi Paul,
What a shame a bit of wd 40 or grease would have prevented this.
If you want to send or bring them to me them to me and pay for the return postage.
I will vapour blast them free of charge and then you can evaluate them more easily.
It only removes the rust !!
Trevor in Taunton Somerset

Trevor

Have pm'd you

Really appreciate the offer - just another reason why i love this forum, genuine decent people thank you all for you advice

Paul

Could you show us all the results too!

This is exactly the sort of thing the users of this board are all experiencing, I have a few cams like that too!

Cheers!

Will post pic when done

Cheers all