Help removing nuts at exhaust header

[Bellicose Right Winger]

Try a six-point 13mm socket and heat from a propane torch. Be sure to use copper paste on reassembly.

Paul Shovestul

Any suggestions on removing the 13mm nuts which attach the exhaust to the header? The appear to be copper and are slightly rusted. sprayed on liquid wrench this weekend. The 13 mm socket was too big due to rust removal but 12mm or 1/2" were too small.

Should I try hammering on the 1/2" socket? What about heating the nuts with a tourch first to make removal easier. I'm open to suggestions.

Mike Feeney