Question is: Can having a break in your exhause pipe about 2/3 of the way to the tailpipe (in other words, about under the rear seat, and just before the muffler) cause enough cold air (remember we have sub-zeros coming) to harm (as in "burn") the vavles? This is what I was warned about years ago when running open headers occasionally came into the picture.
This is partly OT becase I'm not talking about my Mercedes, I'm talking about a gasser four-cylinder (whose make shall remain unnamed in the interest of quelling any protest). Probably, the cat converter would protect things? Brian
