Wow, just, wow!
So, the past couple of nights after work I have been tearing into the Biscayne. Mainly cleaning things up, painting up the engine bay and overall trying to make it look better under there. While doing this, I knew I had an exhaust leak issue to address so off comes the y-pipe and the manifolds. I sprayed down the y-pipe to manifold bolts with some PB and WD40 before I left for work because it was VERY rusty under there. What do I find when I get home? I didn't even need it! The bolts were finger tight on the y-pipe, AND the manifolds!! I found 3 bolts (both sides combined) that I actually had to use a ratchet on. Not only were the manifolds on finger tight, there were NO gaskets between the head and manifold!! The y-pipe had the gaskets on the passenger side and a shredded donut gasket on the drivers side. No wonder I had a leak. Hope I don't have a burnt exhaust valve in there somewhere (the motor runs good so I doubt it). Another thing I found, when I pulled out the 2 rear driver intake manifold bolts (they were holding a spark plug wire loom holder), they smelt HORRIBLE!!!! Like REALLY nasty. I can't figure out what the smell is honestly. I don't seem to have any fuel leaks/intake leaks anywhere. The engine runs/idles fine, so I'm kinda curious. I also found that my exhaust heat riser on the passenger side has 2 small cracks in it (right above the hole for the butterfly shaft to pass through) and seems warped. Any ideas for this one without replacing it? Don't want to slap it back together and have another exhaust leak. I should probably just buy a new one but would hate to spend the money on something that will just be coming off soon. Just thought I'd rant a little bit. I can't believe how loose everything was, now it makes me worry about other stuff.