Out with the old, in with the older, SS exchangers replacing '75 crapola Options

[rjames]

Finally got the old exchangers off. What a gigantic PITA. I figured they'd fall right off after removing the exhaust stud bolts, but noooooooo. It took about 1 hour of coaxing per side (and a ton of cursing) before they let go.

Here's the old: (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/barf.gif)

[jk76.914]

I annealed my copper rings per this article-

http://www.ratwell.com/technical/Exhaust.html

It's only a one beer job. It may not be necessary, but it can't hurt. And they are definitely softer after. You can feel it if you twist them gently.

Also, be sure and support the back end, but don't tighten the fasteners to the muffler until it's on and torqued at the exhaust ports. On mine, the exhaust was about 1/4" too low relative to the hanger at the back of the transmission. So I took the hanger off and dragged the holes. Maybe I'm the only one that has ever happened to, but to bend it up to align the holes would leave the studs at the head stressed.

Those HEs were a nice snag. They look like the last version with stainless flanges at the muffler. The earlier ones were all stainless except for those flanges....

That's a Bursch muffler and collector. They're pretty good, but sometimes the muffler makes rattly noises like an internal baffle is loose....

Good luck,
Jim