...following on from the listening to my Speedy sound track, from memory the front box is the one that need repacking....this is a case of cutting the box open?

 

.....would anyone have a pics on the internals of the front box,

Just a perforated tube (or should be, they get blocked) I cut a rectangular hole on the carb side, repack with proprietary material. Cut and bend a cover fixed with four rivenuts, sealed with high temp silicon.

Just a perforated tube (or should be, they get blocked) I cut a rectangular hole on the carb side, repack with proprietary material. Cut and bend a cover fixed with four rivenuts, sealed with high temp silicon.

 

cheers

....or you can cut it open along the edges, put a new perforated pipe in place with a few welds, pack the whole thing with hight temp insulation (or steel wool) and weld it up again. As you can tell by the weight of it, there is no need to worry about ultra-thin material, so welding (MIG, MAG or TIG) is easy.