amount of pipe over lap one exhaust to seal joint.

[waynieZ]

I'm having my headers coated and I need to figure how far from the end of the collector to stop the coating. There is only about 1/2" of room from the floor to the top of the collector so I doubt I coud get room for a V Band with clamp, so I'm going to use a slip joint and band clamp.
I had even thought of elongating the holes in the header flange in the back to try to drop the back of the header a little just to get some extra clearance. So my question is how much do I need to leave un coated so I can get a good seal from slipping the pipe over the collector? Which will have to stay un coated.

[dontlifttoshift]

Why do you have to leave it uncoated for the slip fit to seal? Coat the whole thing and it will be fine.

Regarding floor clearance: Don't slot the mounting holes to get more room, you are just asking for leaks. You would be surprised what you can accomplish with a long enough bar.

[waynieZ]

The bar was my second idea but I could picture wrecking something.

[71RS/SS396]

X2 on just coating the whole header.

[clill]

Or use a Rosebud torch tip, heat the headers and bend them down for a little more clearance but the band clamp as is should work.

[waynieZ]

Thanks guys, I saw some Holley stainless Torco band clamps that do a butt connection so I'm going to coat the complete header and try them.
Thanks again.