Hello all! I am home from college for the summer, and have been doing a lot to my Cutlass. I started by adding an electric vacuum pump, to supplement the engine's vacuum. It was originally a GM vacuum pump. I plumbed it into my vacuum can with a T to the engine. I also wired it to the brake switch, as the pump would constantly studder when it was wired to switched ignition. I don't think it produced quite enough vacuum to fill the tank, or my vacuum system has a very slight leak. I also added electric fans, which I've had laying around for a while. I grabbed them from a mid 90's dodge intrepid out of the junkyard. Made some brackets, and got a $30 adjustable fan controller from amazon. Keeps the engine nice and cool, I'm happy so far.
I also finally mounted the rear seat speaker pods I made almost two years ago. I'm just waiting on a set of Rockford Fosgate component speakers to fill them. There are some things I wish I did differently on these, but hey they will work for now.
This week, cut up my Jeg's exhaust kit even more and added an H-pipe. I'm not sure I can tell a difference via butt dyno, but it sure sounds a lot better, much deeper and hollow sounding.
Last but not least, I've been playing with my carb and ignition tune, trying to get it even closer. I think I have the part throttle and idle tunes down, now I just need a jet kit to lean the secondaries out a little. I've changed the power valve, adjusted the idle mixture, and took 3 degrees of base timing out. Seems to run a lot better. I took the plugs out this week to put a fresh set in, and was pretty happy with the old set I took out.
I'm hoping to get it back on the dyno this summer, to see if all the changes I've made have increased power and torque. One thing I think is next on the list is a pcv catch can. Every time I shut the car down it diesels. Even on non-ethonal premium gas. I've tried playing with the timing, idle mixture, and idle speed to no avail. So I think the engine is vapor locking from crankcase vapors filling the cylinders. I think a pcv catch can will work, instead of recirculating them back into the engine. I'm getting excited to head back to the drag strip this weekend. I'm hoping to at least be able to make a full pass, now that I have a rebuilt transmission and 3.73 gears!