looking for ideas to cure cosmetic issue

[grumpyvette]

my brother-in-laws corvette has newly installed dougs headers and they look and run great, but down here in Florida theres a good deal of moisture in the air, and as a result if you park a corvette outside over night, like he has done several times he has found that on starting the car, the slip joint between the header collectors and side pipes leaks a bit of exhaust and as theres a bit of condensation the result is a fine spray of rust colored moisture for the first few seconds until the headers heat up.
now this wipes off very easily and the headers themselves are not rusting, inspection shows the muffler insert is the source.
what I,m looking for is a way to eliminate the discoloration seeping from the slip fit connection without doing something that will prevent the fairly easy removal of the side pipe for easy replacement of the insert muffler
ANY IDEAS GENTLEMEN?

 

[Indycars]

High temperature anti-sieze compound.

It will both fill the voids to make a better seal and also make it
easier to remove the the extension from the collector when it
comes time years from now.

 

[87vette81big]

There is a high temperature exhaust system sealer for rigid mount joint connections.
ACOUSTIC SEAL made by Walker Exhaust.
I use it for daily drivers on all bell type and flange headpipe connections.
ACOUSTIC SEAL is sold at your local Napa auto parts store.
Its a very high viscosity petrolieum based sealer. Once applied and normal

Exhaust temps present, ACOUSTIC SEAL cures rapid. Moisture and corrosion protection permanent fortified.
Also small exhaust leaks and pinholes are sealed.
Future exhaust joint connection dissasembly easily acomplished with normal hand tools.

 

[87vette81big]

There is a high temperature exhaust system sealer for rigid mount joint connections.
ACOUSTIC SEAL made by Walker Exhaust.
I use it for daily drivers on all bell type and flange headpipe connections.
ACOUSTIC SEAL is sold at your local Napa auto parts store.
Its a very high viscosity petrolieum based sealer. Once applied and normal

Exhaust temps present, ACOUSTIC SEAL cures rapid. Moisture and corrosion protection permanent fortified.
Also small exhaust leaks and pinholes are sealed.
Future exhaust joint connection dissasembly easily acomplished with normal hand tools.

 

[grumpyvette]

thank you gentlemen Ill pass the info on! Im sure he will be pleased

 

[grumpyvette]

I made a few phone calls to friends with corvettes that have side pipe exhaust and asked, if they had similar issues and if they did have, what did they do about it and had they found a solution,I wanted to know what they use or if they even had that problem,
when I find a good answer to a problem I like to post it so everyone benefits
I never had that issue with my 1968 big block corvette that ran side pipes, but after asking around it seems to be a fairly common issue.
The result was that several people mentioned this product below as being very effective, you simply smear the inside of the side pipe and the outside of the collector with a thin coat and slide them together, theres only a couple thousands clearance and the silicone fills and seals the joint

http://www.ebay.com/itm/Xtraseal-Gasket ... eb&vxp=mtr

 

[grumpyvette]

the earlier you catch and treat surface rust , forming on headers chrome surface the better the results will be, and a wax , oil or silicone spray regularly applied to reduce oxygen contacting the surface micro pores in the surface the better, an abrasive nylon brush used to lightly polisgh the surface after wiping it withj a slurry mix of vinegar and chrome polish helps bring back the chrome surface shine if caught early and often.

http://www.harborfreight.com/4-150-grit-nylon-abrasive-wheel-60326.html
easily polished up with a good 1/2' drill and abrasive brush, some vinegar and chrome polish

if its a bit more than a haze rust on the surface, flitz works well on a damp rage soaked in vinegar
http://www.summitracing.com/parts/ftz-bu03515