Flushing outboard with aluminium cleaner

[juggernaut]

Can I ask where you got it from Jug? hard to find in Aus.

Heres a link to their MSDS http://www.apexengineeringproducts.c...SDS_030115.pdf

Says its about 5-9% hydrochloric acid by weight. I have heard once you do the flush it can make your outboard more prone to a faster build up of salt. But a 20y old engine who really cares I guess.

I got from here in Perth - here's a link to the Oz website. I note the MSDS does show acid but recommends but not necessary to wear gloves so obviously very weak solution.

http://www.rydlyme.com.au



Further info

http://www.rydlyme.com.au/Content/product-info

[juggernaut]

Without trying to be funny, I reckon if you got a bucket of water and a couple of handfuls of sand and circulated it through your motor for a couple of hours, it would probably clean things too, add to that, a drop of acid to really get a good go at the nice clean aluminium and who knows what the result could be.

I don't think the media is enough to abrade away the surface as whatever the chosen circulation pump is unlikely to exert enough pressure. Rather I think it is to carry away the diluted residue.

[juggernaut]

How it's done on a diesel with some before and after pics

http://clubsearay.com/showthread.php...hlight=Rydlyme

i plan to run it through my mercruisers later this year. If I had to clean them manually I'd be pulling 8 coolers off the 2 motors/transmissions.

[maru222]

Pulling heads off this coming weekend. Go in and have a look what's going on Will try and post picture if I can Thanks for all your inputs


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[SHOOTER1]

Flushing an outboard with acid? What could possibly go wrong😕

[maru222]

Pulled heads off. All bolts released perfect. The inside looks great after 23 years. Small amounts of salt build up. Only one speck of corrosion which was only in the paint coating Acid washed everything we could. Honey coloured coating develops on inside and retards heat transfer. Acid helped to remove. Reassembled and will test on Maroochydore river. So if you see a 21 ft southwind going 5000 rpm on river. That's us. Safety first of course

[maru222]

Test run went perfect. 5000/5100 rpm for 25 mins. All good. Heat gun says 55c at heads. And no alarms


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