low baritone exhaust problem

Haven't posted in a couple of years, but I ran into an issue this last month that I needed to tell.

On the way to work a month or so ago my 240z all of a sudden started bogging. The exhaust had gone from high pitch to a low baritone. I had to gas the hell out of it to get home, stalling several times along the way. Once I got home I did the usual checking for gas and spark. All good. Literally for weeks I looked for a cause. Because its my daily driver, I had to rent a car, three a matter of fact. I ran out of time and money so i got drastic and had the head rebuilt, 150 bucks.

I put the rebuilt head on, only to get the same result. So I removed the head and put it back on, double checking all the procedures. Still the same result. At that point I started playing with timing.

Tonight I finally figured it out after 3 rental cars, 500 bucks, and a pissed off girlfriend later (giving me rides). Carb needle fell off the bottom of the piston :stupid:

Im not mad though, this last month I got back to workin on the car and remembering how much I loved it and why I have the z after all this time.

So if you get the baritone exhaust, might give it a look