kendall Posted June 18, 2017 Report Share Posted June 18, 2017 I am about to braze two fittings on an Offenhauser aluminum intake using Bernzomatic AL-3 rods @ 371 centigrade. The aluminum attachments are temporarily screwed into the intake mani. with steel screws and a bed of hi temp gasket silicone. What are any ramifications of applying heat? Would tig welding at even higher temps. be safer for the mani. or worse? Thanks Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted June 18, 2017 Report Share Posted June 18, 2017 are you comfortable using those rods? I would think there would be little worry about strength as these are not going to be structural mounts. Not sure of your temp arrangement, I gather these are plates being attached to the manifold. Could it not have just as easily been drilled and tapped to start with. Tig would be my choice but I agree, not everyone has a tig at home. Quote Link to comment Share on other sites More sharing options...
jeffsunzeri Posted June 19, 2017 Report Share Posted June 19, 2017 17 hours ago, kendall said: I am about to braze two fittings on an Offenhauser aluminum intake using Bernzomatic AL-3 rods @ 371 centigrade. The aluminum attachments are temporarily screwed into the intake mani. with steel screws and a bed of hi temp gasket silicone. What are any ramifications of applying heat? Would tig welding at even higher temps. be safer for the mani. or worse? Thanks The silicone will infiltrate the joint creating inclusions that will ruin the joint, regardless of process. Quote Link to comment Share on other sites More sharing options...
Silverdome Posted June 19, 2017 Report Share Posted June 19, 2017 24 minutes ago, jeffsunzeri said: The silicone will infiltrate the joint creating inclusions that will ruin the joint, regardless of process. X2, remove that silicone. Quote Link to comment Share on other sites More sharing options...
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