block cleaning

jbz23 · Post by **jbz23** » Sat May 15, 2021 10:50 pm

Hi all

anybody got a good contact to de rust and clean engine blocks ?

as near to Herefordshire as possible

cheers

mk1 · Post by **mk1** » Sat May 22, 2021 4:57 pm

Phosphoric acid is MUCH better.

about 20% at 20°C works brilliantly. will do a normally mucky block in 24 hours & is anti rust protected when it emerges.

Post by **Richspec** » Sat May 22, 2021 5:56 pm

A friend of mine in Texas is doing his dipped in vinegar? As the land of the free isn't so free when it comes to acid dipping.

mk1 · Post by **mk1** » Sat May 22, 2021 8:11 pm

The problem with using most acids is that unless they are neutralised immediately after dipping, they will rust like hell.

Post by **Fanfaniracing** » Sat May 22, 2021 8:35 pm

https://youtu.be/njtyZzDBHzg

Or like this?

Post by **Exminiman** » Sat May 22, 2021 10:57 pm

Interesting comparison of 5 acids for rust removal, by a Chemist.
Bit of a short experiment, and not much on neutralising....but still
https://youtu.be/5Bkdej_z1HI

redrobbo · Post by **redrobbo** » Sun May 23, 2021 8:42 am

Richspec wrote: ↑Sat May 22, 2021 5:56 pm A friend of mine in Texas is doing his dipped in vinegar? As the land of the free isn't so free when it comes to acid dipping.

Yes he is and it looks to be working, a video he sent me shows the vinegar doing a whirlpool impression so is doing something.

Be interesting to see how it comes out.

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