bluing exhaust pipe

[masterjack50]

I Recently Purchased A 1990 Electra Glide Ultra Classis With Anew Engine That Has Been Bored And Camed. I Have Noticed Strong Bluing Of The Metal Where The Two Header Pipes Join The Single Pipe And Muffler. I Am Concerned That There Is High Heat Build Up. Should I Be Concerned Masterjack 50

[Blackdog 15]

what kind of pipes do you have & do you have heat shields on them ?

[JBONE]

there's always slight blue.....even some heat shields can develope bluing...there's really nothing to do because of the heat distribution!....some guys (who don't like heat shields) rechrome the pipes every year.

[Dave63]

Originally Posted by masterjack50

I Have Noticed Strong Bluing Of The Metal Where The Two Header Pipes Join The Single Pipe And Muffler.

Normal.

That joint is about as aero-friendly as a billboard in a windstorm. The flow characteristics suck, as the rear headpipe dumps hard into the front pipe, and there's little angle to transition it.

It's not only normal, but a common place that those pipes crack and break, due to heat and vibration.

Not to mention, the pipes are single walled mild steel, and it takes very little heat to discolor them, hence 483 heat shields that cover the exhaust.

[Jacket4256]

Originally Posted by Dave63

It's not only normal, but a common place that those pipes crack and break, due to heat and vibration.

amen to that brother damn header pipes

[Blackdog 15]

yup..................