The Stovebolt Site Forums The Shop Area Engine Shop New exhaust, new smoke

We got a new exhaust system put on the '54 3600 ('55 235, 4spd) today. Nice and quiet, now.

However, I noticed that I now have bluish/white smoke coming out of the exhaust at hot idle in the driveway. It's not terrible, but it's noticeable. I've run this motor quite a bit over the last several weeks with just the exhaust manifold and never noticed any smoke. Is there anything that adding a new exhaust could've caused here, or is it just that the smoke is more condensed in the tailpipe than it was from the manifold so it's more noticeable?

I believe you answered your own question !

Joe

Depending on the type of pipe used, I think it could have had a protective coating that may now be burning off. Either way, hopefully its nothing to worry about.

Now, don't do this at home...
But I had a Honda spree scooter when I was in university, I noticed the same thing. In order to prolong the fun, I used to fill up the muffler a little bit, well okay allot with non flammable parts washing solvent. Man, the trail of smoke, it was as awesome as pouring Marvel mystery oil down a carb.

My brother's friend's grandpa, who was also famous for his horseradish sauce, always maintained that if a little oil could preserve the muffler, then coating the inside with grease would be helpful. In fact, he used to cut a square access hatch in his muffler, so he could put new grease in every once and a while. For some reason the grease would "get used up" after a while. You could see him coming across the prairie for miles.

Good times.

Must be something about Horseradish. My grandfather used to eat it straight out of the jar and he did crazy thing like the muffler grease.

Yeah, we just thought of that one, too. I'm going to run it again tomorrow for a while and see what happens. If it eventually stops, we'll have our answer.