Un reachable rust

Discuss anything Morris Minor related.
Forum rules
By using this site, you agree to our rules. Please see: Terms of Use
Post Reply
Nourish
Minor Fan
Posts: 139
Joined: Wed Dec 17, 2014 5:42 pm
MMOC Member: No

Un reachable rust

Post by Nourish »

I am at the moment replacing the rusty end of the N/S bulkhead Cross member. There is light surface rust towards the middle of the cross member that I can't reach. Should I just leave it or spray rust converter in there?
Cheers
philthehill
Minor Maniac
Posts: 10769
Joined: Thu Jul 19, 2012 12:05 pm
Location: Hampshire
MMOC Member: Yes

Re: Un reachable rust

Post by philthehill »

You can spray rust convertor in to the cross member but is the rust convertor you intend to use a long term or short term convertor? In that I mean does the rust convertor need to be over sprayed (with paint) to seal and be effective. Some convertors allow the metal to go rusty after a while if not sealed.

Nourish
Minor Fan
Posts: 139
Joined: Wed Dec 17, 2014 5:42 pm
MMOC Member: No

Re: Un reachable rust

Post by Nourish »

Ah - I'm using Phosphoric Acid.
don58van
Minor Addict
Posts: 759
Joined: Sun Feb 01, 2009 6:24 am
Location: New South Wales, Australia
MMOC Member: Yes

Re: Un reachable rust

Post by don58van »

Phosphoric is good and very widely used as a rust converter.

However, it might be worth looking at one of the products that has a sealer in its formulation.

Don
kennatt
Minor Legend
Posts: 2625
Joined: Fri Feb 02, 2007 9:11 pm
MMOC Member: No

Re: Un reachable rust

Post by kennatt »

use the acid and then spray waxoil into the section,its about as good a result as you can expect for long term protection,I believe you need to wash the acid off after it has converted the rust to clear the painted area since the residue effects the paint /sealer bonding.
Nourish
Minor Fan
Posts: 139
Joined: Wed Dec 17, 2014 5:42 pm
MMOC Member: No

Re: Un reachable rust

Post by Nourish »

Mmmmmmm - that's a hard one, If I spray the acid in to where I can't reach - how do I clean it off?
Is there a substitute for Waxoil that doesn't smell as this is where the heater takes its fresh air?
les
Minor Maniac
Posts: 8739
Joined: Tue Feb 12, 2002 12:00 am
Location: kent
MMOC Member: Yes

Re: Un reachable rust

Post by les »

Maybe wire wool attached to a stick would move some surface rust, vacuum out the residue, then start the treatment you decide on.

ian.mcdougall
Minor Legend
Posts: 3287
Joined: Tue May 20, 2008 9:24 pm
Location: Co.Mayo Ireland
MMOC Member: Yes

Re: Un reachable rust

Post by ian.mcdougall »

How good a welder are you ,could you un-stitch cross-member ,deal with rust ,epoxy prime and weld back together ?

panky
Minor Legend
Posts: 1994
Joined: Wed Aug 20, 2014 4:12 pm
Location: Cheshire
MMOC Member: No

Re: Un reachable rust

Post by panky »

I use Bilt Hamber Deox gel for the bits I can't take off and soak in the citric acid bucket.
The nearside wing on Ted the traveller is only a few years old but rust was starting to take hold in the crevice between the wing and stiffener.

Here's the area after applying a good dose of Deox and left over night

Image

And after a wash off with soapy water

Image

I did get a little bit of flash rust appear when I dried it off with a heat gun but a quick rub with a scotch bright and a squirt of etch primer sorted it out.
It's excellent stuff if you follow the instructions closely and not expensive.
Image
Post Reply