Ya it does... but, what about the metal
Coating your exhaust parts is a old thing... as the cermic stuff will plate out.. but, the heat that is given off is not uniform .. thus you will develope cracks in the exhaust system usually around the inside radi... the reason the exhaust system is so paper thin.. is because it gets rid of heat quicker that way.. and keeps it more uniform without stress riser... shure it gets red.. ever see one on a turbo do a run up at night... glows bright orange ... except for the bad cyc.. their it is a dull red... but, the air passing thru the engine will keep the heat down.. if you have a radiation problem from the heat.. then you need to shield the part not the exhaust tube... and coating them with asbestos, fiberglass or cermic is not the answer...
Any shielding should be done so that the exhaust part can expand and contract freely...
And while were on this subject... lets talk a litte about the stanless steel parts... and springs... smile.. one of my more favorite things to discuss...
Mechanics love stanless steel.. yep we do... we make lots of money off of it... when you cant get the bolt out anymore... we get called in to remove the little bugger.... where as steel parts are actually stronger (by 30% more for the same weight) than their counterpart of SS steel... now drop one of the SS parts and how do you get it out... yep you have to go grab it... but, the steel part.. we use a magnet on and retreve it quite easly... Oh and does SS rust... well the grade that they are using.. or selling.. yep it does ... and when you put the wrench on it.. to take the nut off.. and round it off..so that no wrench known to man can remove it... now what... on the steel ones you take a little grinder and your good in a matter of mins... or drill out the bolt section from the head... but, the SS... well thats a different story... it requires that you take a carbide cutter wheel.. and cut the part off.. sometimes damaging the fixed part that you don't want to mess up...
Do SS parts hold up longer.. not from what we have seen... they actually seem to have about the same life... but, they add a new dimension to the other parts that will start to corrode and rust because of their valance level... where they make up a small battery... because of dissimalar metals...
So SS parts should be limited to Safety wire and kotter pins... leave the SS bolts and hardware alone... expecially around the hot sections unless the manufacture says to use them their... stick with the cheeper... less costly (ss cost about twice as much... to put it in other words.. you can buy two steel bolts for the same price as one ss bolt)... and more reliable... (higher strenght is in the steel bolts).
and remember we mechanics just love SS steel parts... because we can make more money off of you... when it comes time to remove it... and believe me.. it will come a time.. smile...
GMAs
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