Holes appearing

[andyf]

What started today as a replacement carpet job has come to a stop because I have found a split in the floorpan on the drivers side, about 2-3 inches long. It is behind the seat and appears to be approximately where the front of the rear suspension arm is mounted. It`s particularly annoying as I was sure the car was solid.

It does not appear too bad, as I say it is a split that is surrounded by some surface rust. The passenger side is OK but there is surface rust in the same place so I will tackle this at the same time.

Any tips or anything I should look out for, particularly considering where it is? Any advice greatly appreciated.

Andy.


1980 persian aqua DHC

[Underdog]

A common area for rust to appear. Unfortunately it is also a critical spot as the frame rail and suspension pickup are there. Mine had a little there probably like what you describe. One of the rust covertering primers and some seam sealer may halt it. On this second rebuild I did this.



Perhaps a little overkill but with the bigger V8, I wanted to be sure the suspension pickup will stay put.

72 MGB BRG
80 TR8 Persian Aqua
If women don't find you handsome, they should at least find you handy.

[Beans]

Whenever I get the chance I weld in a piece of sheet meteal to replace the large steel grommet. Done that on two cars now (both more then 10 years ago) and no problems in that area since ...

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<font color="blue"><i>1981 TR7 FHC Sprint (better known as 't Kreng)
1981 TR7 DHC (not very well known yet, but back on the road)
Also a 1980 TR7 DHC, 1980 TR7 DHC FI, 1981 TR7 FHC
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[andyf]

Thanks for the replies. Rust converter and decent plates it is then, although I will cut out around the area by the split to be safe.
Thank you both.


1980 persian aqua DHC

[saabfast]

I found that mine had gone on both sides in a similar way when I got it. I used a knotted wire brush in the angle grinder to rip out all the rust (they are a bit vicious but remove the rubbish and get back to steel very quickly) leaving a slot about 4" long x 1/4" wide.

A strip of steel was then cut (about 1" x 5" IRRC), shaped slightly and tapped into the crevice where the bulkhead meets the floorpan so that it lapped over the slot. I then welded all round the inside and did the same underneath all around the slot as I felt that a double welded lap would be stronger than a but weld (I am no welding expert).

A thick layer of galvafroid and seam sealer, plus underseal underneath has hopefully cured it for good.

Alan
Saab 9000 Stg 1
'81 TR7 DHC