Rear radius-arm plate Rust = Cache-Misere in French

Technical advice Q&A
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rfs1957
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#1 Rear radius-arm plate Rust = Cache-Misere in French

Post by rfs1957 » Thu May 15, 2014 8:28 am

Advice needed please about how to cure / attack / repair this catalogue of horrors.

Image

Above is LHS the worst one, seen here before scaping and wire-brushing

Along the lines of ?caveat emptor?, here are extracts from the car?s accompanying documentation when I bought it 10 years ago.

From the owner who had the work done :

? thorough renovation ?? to exact ?.. body original specification ?? only lead-loading ?.. all panels shaped and matched by hand ??. perfect fit and gapping ?.?

From the dealer :

? undergone total restoration to the most exacting standards ??.. fully documented ??. mint condition in every aspect ????..?

The copious underseal and paint underneath the car made it look brand-new, and in almost every respect the car has turned out to be true to hype. (Underseal in French is often referred to as "Misery Cover")

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It?s taken me 10 years to find the truth, and the work mentioned was done almost 25 years ago, but now that I?ve found where the ?new? meets the ?old? it?s been a bit of a shock, bearing in mind that the car has been dry-stored since, has almost never seen the rain, and has done about 5.000 miles at most since 1990.

And appears to have been soaked and injected with Waxoyl .......

Image

LHS still, after a bit of wire-brushing

I thought the rear LHS radius-arm mounting looked a bit flakey, and indeed once the under-seal was scraped away you could see that this was where the work had stopped ???..

Image

RHS in better but still pin-hole or two in surrounding metal

There don?t seem to be any horrors elsewhere ? the box sections above, seen with a probe, have surface rust but are soaked in Waxoyl and look strong, and the surrounding metal is appears as-new.

Image

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Changing the whole rear-floor traverse that carries the radius-arm mountings is obviously the only real solution (is it the whole floor in fact ?!) but has anyone attempted an intermediate/temporary repair of an area like this ?

Am tempted to plate/gusset from under the anti-roll-bar mounts (plug-welded) down to the back edge of the radius-arm plates, short-circuiting what is obviously very thin.
Last edited by rfs1957 on Fri May 16, 2014 11:34 am, edited 2 times in total.
Rory
3.8 OTS S1 Opalescent Silver Grey - built May 28th 1962

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tinworm
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#2

Post by tinworm » Thu May 15, 2014 4:13 pm

Hi Rory, having rebuilt more than one of these bodies over the years my advice is do a thorough job. I would tackle this by removing the dished panel behind the seats so you can get a good look at the problem. You may find that rust has eaten into the inner sills inside here and you need to know about it. New repair sections can be fabricated or new rear floor sections can be bought and fitted wholly or partially. Looks to me like someone has repaired this area before - so there could be further damage. I think though that 25 years after the work was done it has lasted pretty well. Rust never sleeps !

regards Barrie
1968 E-type roadster, 1964 E-type fixed head 1995 Ferrari 355 1980 Ferrari 308 1987 V8 90 Landrover 1988 Bedford rascal van 1943 Ford GPW

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#3

Post by rfs1957 » Thu May 15, 2014 8:46 pm

Point taken Barry.

What does a rear-floor repair section look like ? - any link or picture much appreciated, haven't really grasped what the cross-section of the area behind the seats looks like.

I have pictures of the work carried out circa 1990 and everything aft of those cracks was indeed new ........... so those areas are not 25 years old but 52.
Rory
3.8 OTS S1 Opalescent Silver Grey - built May 28th 1962

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#4

Post by paulsco » Thu May 15, 2014 9:08 pm

Hi Rory,

This thread may give you some insight into the construction:

http://www.etypeuk.com/forum/viewtopic. ... highlight=

Paul

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#5

Post by rfs1957 » Fri May 16, 2014 11:30 am

That makes it a lot clearer, Paul, many thanks.

It doesn't suit me to make the complete repair right now, so I'll make temporary reinforcing plates that won't compromise the existing (new) rear box-sections when I come to do the proper and definitive job, with new floor areas at the same time.

Can I get rid of the oh-so-unforgiving Cream colour at the same time ?
Rory
3.8 OTS S1 Opalescent Silver Grey - built May 28th 1962

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malcolm
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#6

Post by malcolm » Fri May 16, 2014 2:11 pm

my series 2 is cream, and although it wasn't really my first choice (probably would have been my last!) it is starting to grow on me. Looks very smart when clean.
Malcolm
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#7

Post by abowie » Fri May 16, 2014 9:20 pm

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Andrew.
881824, 1E21538. 889457. 1961 4.3l Mk2. 1975 XJS. 1962 MGB. 1979 MGB.
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#8

Post by paulsco » Sat May 17, 2014 9:30 am

Rory,

Just an observation; your fuel line going through that bracket without some type of grommet is an accident waiting to happen!
It could chaff and leak fuel.

Paul

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#9

Post by rfs1957 » Sat May 17, 2014 2:52 pm

Bingo ! You've won the prize - I had bet that someone would pick me up on this.

Yes, not my doing honest - isn't it meant to have a proper union here, passing through the bracket - just like the rear-brake hose does on the neighbouring bracket ?
Rory
3.8 OTS S1 Opalescent Silver Grey - built May 28th 1962

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#10

Post by paulsco » Sat May 17, 2014 4:34 pm

This is what mine was like originally:
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Paul

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#11

Post by tinworm » Sat May 17, 2014 5:38 pm

Hi Rory , Paul has the the correct route for the fuel pipe. The bracket attached to the panel shown is on both sides of the car as the brake pipe to the rear axle changes sides for LHD or RHD.

regards Barrie
1968 E-type roadster, 1964 E-type fixed head 1995 Ferrari 355 1980 Ferrari 308 1987 V8 90 Landrover 1988 Bedford rascal van 1943 Ford GPW

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