I have been reading information from this site for several months, and I thought I would finally introduce myself. Last spring I purchased a 1972 Plymouth Scamp with a 225 slant 6. I believe the engine to be original to the car with only 35K miles. I have a great friend who has been a mechanic for 40 years who comes helps/teaches me. We have serviced the brakes, done an oil/filters change, adjusted the valves, swapped in a pertronix ignitor II unit and coil, changed to NGK plugs (without washers), tuned the carb (although he still thinks it is running rich and we may try to swap the jet one smaller). At this point I'm getting 18+ mpg and the engine runs smoothly. With the help of this board I used the recommended Mopar spray and the manifold heat control valve is working properly.
I have a metalic sounding rattle at higher rpms that sounds like a heat shield or something similar. That is the only unknown at this time.
I have two last items to address:
1) The brake master cylinder leaks from under the cap in the front (the rear brake chamber). I've been trying to stop the leak, but will probably just replace the master cylinder (manual drums). I live in the country and do not drive in traffic so no plans to swap in disks at this time.
2) I'm going to replace exhaust system, only because I want the glass pack sound. Based on what I've read I'm going to run 2.25 pipe from stock manifold all the way back.
This is my first slant, but not my first mopar straight 6. I have a '57 Dodge D100 with a flat head 6 that I love, see this link if interested.
http://sites.google.com/site/steves57dodge/
I took the truck build too far in that I don't drive it as much as I should because I want to keep it "show" condition. I bought the Scamp to drive, and I drive it to work 2-3 days per week. I'm having a ball with it. Power steering and lower rear end gears make it a lot more comfortable than the truck!
