Hello Brickboarders:

It has been several months since I first started up the B18B after it was rebuilt. Many of you guys were really helpful with guiding me on what should come with the rebuild.

The '67 122s with punched out .030 and K cam was an excellent combination! Before rebuild and after was like a night and day. Very zippy.

However...I am concerned about two things. There is almost 3,000 miles now on the engine, but still at idle (850 - 950 rpm) there is quite a bit of smoking which disappears at acceleration (when the engine is fully warmed up). I have already tested the compression. First cylinder is around 183 psi while the rest is around around 186.

I did wonder in the back of my mind if it is because of excessive clearance in the valve guides? I had all of the valves and springs replaced and the seats hardened, but opted to have the guides knurled instead of replacement with the new ones. Thoughts?

Second concern is that when I stop after about 20- 25 minutes of driving, the idle sticks on high ranging from 1100 to 1400 rpm. But if I give the gas pedal a quick tap, the idle drops down to normal (850 - 950). I don't think the SUs were the problem...they were also rebuilt and tuned. I've already tested everything for leaks but found none. I also checked the gas linkage but saw no problems. The vaccuum test showed a fast vibrating needle between 18 and 19 inches.

Any advice? I use 10w 30 oil by the way. The spark plugs looked very good..light brown with very slight light gray.

Any advice? Many thanks!

-DS