Join Date: Nov 2010
Location: United Arab Emirates
They are noisy engines, and get noisier as they grow older.
Inlet clearances can only be set with shims, it cannot be done with an adjuster. Exhaust clearances can be adjusted by simple adjustments. This makes maintenance of the inlet side, a right royal PAIN. You need to measure clearances, then remove cams and measure the existing shims and calculate what new shims you need to install. Then you need to FIND those shims......
To complicate matters, the cams are notoriously soft and wear very badly in a lot of cases, so you might want to have a look at those while you are at it....that creates a NEW set of problems because if you need new cams, you have to fit the new ones, and go through the measurement procedures I described earlier, and then remove everything again when you have calculated the new shim sizes.....and then fit them.
Ask me how I know all of this ....and I am in the UAE, very far away from anything Alfa related.....
If you are in Canada, I expect that you need an oil that is thin enough in the cold, but will offer decent viscosity at operating temps. I cannot offer advice on that as I am running 10W60 Castrol Edge Sport in mine...I am not at all concerned about the cold running performance, but retaining decent viscosity in summer is my priority. I also believe (my opinion) that older engines, with tolerances that have opened over the years, require a little thicker oil to keep going longer.
I hope you get the thing sorted, but I am told that others have had them rattling along for years with no problems, just keep an eye on the cam wear and the belts.....