Re: Undercoating frame
Posted by NP on October 20, 1998 at 02:18:46:
In Reply to: Undercoating frame posted by Wayne on October 19, 1998 at 15:09:02:
The British military coat all the LR chassis with some type of thick black rubberised or bitumen coating and it certainly seems to protect it from the effects of corrision better than ordinary paint. You want a product that stays flexible once it is dry, you don't want something that sets hard and cracks. It tends to be put on very thick, up to and over 3/16 to a 1/4 inch in places.
I do my Land Rovers with a thick bituminous substance normally used for sticking/sealing around the edges of Ruberoid roofing material. You can either spread in on with a trowel if you really want a thick coating, (I'm sure that is how the military must do it when you see how thick it is applied!) or thin it and spray with an underseal gun. Spraying it on enables you to get a coating on top of the chassis rails with out having to remove the rear body and seat box, the more complete the oating is the better. An ordinary spray gun just will not be able to apply the stuff.
I would normally steam clean the chassis and let it dry out for a few days. before applying the coating
Do the job in the summer or during a period of hot weather, to ensure the chassis is truely dry and to make applying the rubber soloution that much easier.
At the same time I would normally give the inside of the chassis a coating of Waxoyl or similar type product
If you are looking for a pretty finish then this will not do the job, but it will certainly seal the chassis.
I had to fit a new LHS bulkhead outrigger to a SIIA last week for a local fisherman. The last job I had done on it was the RHS fuel tank outriggers about four years ago. They are in as good a contition as if I had only done the job last week and the vehicle is used on the beach and in and around salt water every day of the week.
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