Re: Intake manifold crack in heat riser

Posted by Fred Puhn On 2010/8/31 9:49:28

JB weld uses epoxy for the adhesive that holds everything together. I have used it successfully on several engine applications, but never on an uncooled exhaust system. The temperature in that manifold area most likely exceeds the 500 degree limit. If it was water cooled such as on the block or head JB weld would probably work. I suggest cast iron welding and then surfacing both manifolds to correct any warpage.