Jake's Story

Home Page: Jim Williamson
Feilding, manawatu, New Zealand

Total Posts: 19

Undersealed Out

Jim Williamson — Posted on The MG Experience
Monday January 11, 2016 3:00 AM

We've been on a mission to strip off the old (factory) underseal, mainly to reassure ourselves there are no hidden dramas about to jump out & suprise us.
I've tried a few different methods, but probably 70% chipped of with a selection of old dull wood chisels. We did some with a heat gun & scraper, but found the sticky residue even harder to deal with. After weeks & weeks of chipping (!!) away, i would guess 90% of the underseal is off.

Next is to figure how best to tackle the rusty spots we've found.
A little rust on top of the drivers side sill (rocker). Not rusted through, but needs tidying
A spot on the floor adjacent, through the floor but not through the sill
Some rust where the front guards fasten below the windscreen
1 small hole on the top seam of the RH rear guard
First signs of rust through the sill at the bottom of the RH dog leg

Compared with some other examples we're delighted with how good things look so far.
We'll be digging in to the dog leg a bit further soon

IMG 2228-001

IMG 2229-001

IMG 2231-001

IMG 2237-001

Member Comments on Journal Entry: Undersealed Out ↵

2016-01-16 02:50:59 # 31555

Comment by alan mccutcheon

Hi JimOn the other side of the world and with an outside temperature of -6 degrees I have have been wrestling with the same task and likewise two old wood chisels removed 90% of my underseal. Glad to hear that you didn't find any nasties. The underside of my 1958 Magnette had been completely plastered in Shutz by the previous owner, I have found a lot of surface rust but no perforations. The rust I have removed with a combination pf MBX, wire wheel,, Makita power file and Fein mutimaster sander.For what it is worth, having poured over 12 years worth of Practical Classics best on test rustproofing product results, I have come up with the following protocol:Any areas of surface rust stabilised with Rustbuster FE 123Sound metal and stabilised rust painted with 2-3 coats of Epoxy Mastic 121Wheel arches spayed with 3M Body ShutzAll other areas (already painted with 121) sprayed with Dinitrol 4941Box sections and hard to reach areas sprayed with Noxudol 700.Will probably seem a bit over the top but the British clim

2016-01-16 03:06:46 # 31557

Comment by Jim Williamson

Hi Alan, thanks for the info. It doesn't look like the rustbuster product is available in NZ, i'll have to look for something similar. Only too familiar with the weather, and what happens to cars in the UK, we started out in Cheshire. Saw the light nearly 10 years ago, sneaked off to 'the other side of the world'Spent a little time in Northern Ireland, regular trips to the NW200, Ulster & some of the smaller road races

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