Rust inhibitor paint

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WoodleySaint
TDC Member
Posts: 11
Joined: Sat May 24, 2025 7:26 pm

Rust inhibitor paint

#1 Post by WoodleySaint »

Hi all,

Could anyone advise me as to what rust inhibitor paint I should use and the process I should follow. I'm intending to paint all suspension components, sub frame, fuel and brake lines. Here are a couple of examples of the condition. (The fuel line has been rubbed down.)

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Thanks Mark
1980 Sprint - man Brooklands Green
Richard the old one
TDC Member
Posts: 1218
Joined: Thu Sep 28, 2006 10:06 pm
Location: Bristol

Re: Rust inhibitor paint

#2 Post by Richard the old one »

I have used waxoil on all my Dolomites but my son in law a couple of years ago introduced me to Bilt Hamber Dynax S50 Cavity anti-corrosion wax, which comes with a 60cm flexible injection lance and Dynax UB Underbody Anti-Corrosion Wax. These items are not cheap but the company does give discount for TDC MEMBERS and I have found the injection lance works very well. I did write up an article on rustproofing a Triumph Dolomite a number of years ago for Dolly Mixture but it is too long to copy into this forum but if you provide me with your email address I will attempt to send you a copy.
cliftyhanger
TDC Member
Posts: 2542
Joined: Sun Oct 26, 2008 7:26 am

Re: Rust inhibitor paint

#3 Post by cliftyhanger »

Painting over any rust is unlikely to be successful. You really need to remove all rust and get back to bare shiny metal. Phosphoric acid or similar "rust killers" can be used to convert any remaining rusty bits.
I use Upol etch primer, and I have a tin of industrial black semi-etch black paint that is pretty robust.

On my wifes MX5 I used a needle scaler to remove the rusty chunks, then a wire bush disc on an angle grinder and drill to get as much off as possible. I then sprayed with a think wax (can't remember if it was Dynax S50 or a Dinitrol product) and finally coated with dynax UB which looks like underseal, but is actually a wax coating. Lasts well!
Clive Senior
Brighton
Matt Cotton
TDC Oxfordshire Area Organiser
Posts: 497
Joined: Sun Oct 08, 2006 4:32 pm

Re: Rust inhibitor paint

#4 Post by Matt Cotton »

Hi Mark.

As mentioned, removal of as much rust as possible with a wire brush in a drill, grinder or a power file (very useful) is advised. I used FE-123 rust converter from: https://www.rust.co.uk/ which seems to be quite highly regarded.
I also used their Epoxy Mastic paint on many of the suspension components and my floor pan - again seems well regarded.
Taking components off to clean them up makes life much easier too. You may find a local powder coater will sand blast and powder coat your components for you for a reasonable cost - I haven't personally used one, but many people advocate this method for a good durable finish.

As Richard says, Bilt Hamber also offer great products in aerosol form and their rust converter Hydrate 80 is also good stuff: https://bilthamber.com/product-category/anti-corrosion/ There is a discount code too for TDC members.

Enjoy the de-rusting! Don't forget the goggles!

BW
MC
Matt Cotton

TDC Oxfordshire Area Organiser.
TDC/TSSC group meeting - 3rd Tuesday of the month


1980 1500HL - OPD
1976 Sprint - SWU
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