Broken heater box.

I have a problem with choosing right stuff to repair crack in heater box. I will be greatfull for any pointers.

Peace,
Kacper.

 

Post a few pictures of the crack / part and you will likely get a load of advice on properly repairing the part.

 

The Cracks.



Peace,
Kacper.

 

Honestly, I'd just get another one unless not available. Post a bigger picture &/or application.

 

I have another one, thing is I don't want to change anything on original one. I am customizing it a little so wanted to use this salvaged one.

Peace,
Kacper.

 

That looks ugly and it will must likely not look right after fixing it.Just get a good used matching one from somebody on this board.If you cannot find it,then go and fix it.Bruno.

 

I know it will show but it's on the lower side so out of sight. I am just kind of a guy who likes to fix stuff, so I am wandering what did they made those boxes off. When I know material I can try and improvise. Is it epoxy resin with a black dye and linen strains?

Peace,
Kacper.

 

I'm quite sure the box is fiberglass with polyester resin. Buy a fiberglass repair kit to repair / fill the hole. Just de-grease and lightly sand around the area - KEEP it SMALL - You can back up the hole with tape to form the shape - either on the inside or the out side of the box. When the resin kicks remove the tape and finish up . I think you can buy color additives to hide the repair a bit.
With the crack you may want to use epoxy, however, the fiberglass resin will work, too. Carefully clean the cracks and "Vee" them out with a Dremel tool or just a sharp razor blade. Fill the cracks with the goop and let it kick. Clean up with some sand paper and shoot a little clear on top.
These repairs should be fairly simple. You may need to "rebuild the area around the bolt hole, as, it looks compromised. You can use scissors to make fine fiberglass strands to add into the resin for more strength - the resin alone doesn't have much strength.

 

Do what Matt said

 

Thanks for all the tips, I know now in which direction i need to move.

Peace,
Kacper.

 

Be careful sanding as the dust could contain asbestos.

 

what year and where are you located.

 

1966 and I am across the Pond in Poland so faaar away. You got some solution?

Peace,
Kacper.

 

I had a part for 68-72 but shipping to Poland is not a option. Even with a name like Rospotynski.

 

I have a reshipping company in Lake in the Hills Illinois, I only use them for all my overwater shipments.
Also 68 and 72 parts are from completely different generations of Riviera unless you are thinking about A-body.

Peace,
Kacper.

 

Do send away a sample piece for asbestos testing before grinding any. They did not find any asbestos in my casing from 1970 so I went ahead.
In your case I think you can get away by using fiberglass body filler.

My damage was a lot larger and close to the engi e so I laminated it using a high temp resistant epoxy. Maybe it would have been more effective and economical to get another AC box. Took loads of time to do my repair. But it was fun to learn to work with epoxy