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View Full Version : How To: Roof box repair



gulwng3
06-20-2019, 03:34 PM
I thought I would share my recent experience with a roof box repair. If you haven't experienced this yet, you will sooner or later. A few years ago, I noticed some surface rust at the driver's side top door/roof area. No issues with the door opening or closing - everything appeared solid. Delorean has always been garaged in Illinois since it was sold to the original owner in 1983. I took it to DMCMW to get this repaired. Here's what they found:

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Note: door hinge areas on front and back are still solid so no need to mess with these areas:

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After cutting out the rusted areas on the driver's side, new metal (16 gauge vs. the original 18 gauge) was fabricated, welded in and rust-proofed:

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After completion, you can hardly tell anything was fixed - looks better than new! [Note: original metal is not galvanized, has no paint on the inside, and only a light dusting of black paint on the outside - no wonder it rusts!]

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Since I have a new frame, springs, shocks, etc., we figure the fiberglass tub must be slightly slanted towards the driver's side, which is where the water sits when it gets inside the roof box. Almost zero rust on the passenger's side. Although I was thinking about replacing the whole roof box with a new stainless steel one, I'm glad I went with this cheaper option. It should last another 40 years...

Andy

Timeless
06-20-2019, 03:56 PM
Yikes! We all know how quickly the car was pushed into production and maybe long-term testing would have shown rust issues.

gulwng3
06-20-2019, 04:23 PM
Yikes! We all know how quickly the car was pushed into production and maybe long-term testing would have shown rust issues.

Long-term testing (via us owners) IS showing rust issues... :smile:

Spittybug
06-20-2019, 06:54 PM
I found POR15 to be a great product in this job. Followed by Flexseal on the outside.

Mark D
06-21-2019, 08:56 AM
Followed by Flexseal on the outside.

Plus, when you're done then your car can also be used as a boat!

http://dmctalk.org/attachment.php?attachmentid=60457&d=1561121761

Timeless
06-21-2019, 10:41 AM
Long-term testing (via us owners) IS showing rust issues... :smile:
My bad - I meant to add: long-term testing before production units were sold.

cbateman
05-20-2020, 04:29 PM
I’m currently looking at buying a Delorean that is going to need this type of work. I’d be very interested in hearing how much MidWest charged for this, as I would bring it to them for sure. Just want to have an idea of how much this car is gonna cost me. Thanks!


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mark w
05-21-2020, 12:24 PM
I found POR15 to be a great product in this job. Followed by Flexseal on the outside.

i too thought this would be a good product for the outside. instead of all that messing black silicone

Mark D
05-21-2020, 01:40 PM
I laughed at the flex seal screen door boat thing only to realize that I was the one that posted it a year ago. Thanks past self for the future laugh.

Timeless
03-21-2022, 04:12 PM
Good news is SS boxes are now available.