[alfa] Alfa Engine Noise(s) - No Lack of Performance

[Russpaine1@xxxxxx]

> In a fault diagnosis(highwoodalfa.com link) you use worn valve gear as a 
> term in the section on engine noise. My 1750 GTV has top end(I think vs. bottom 
> end) noise(a knock or clunk not a higher pitched ping) which has stumped 
> local mechanics after doing the obvious steps with checking clearances and 
> replacing followers. The engine was rebuilt 10,000 miles ago (and this noise 
> occurred almost immediately) Noticeable at idle and slightly moreso when cold and 
> it may be masked at higher rpm by overall engine noise. It sounds like it is 
> isolated to one cylinder area and hard to determine but I think it is closer 
> to 3 and 4 vs 1 and 2 cylinders. There is no performance impact - it runs 
> fine throughout the rpm range! 
Now, just 2 days ago, I was going to drive the car and noticed a secondary or 
residual rattle like noise which could be related to the original knock. I 
did not drive the car. I need to check compression. I need to remove the valve 
cover and look for obvious loose item. Related rotating parts, such as water 
pump seem fine. Beyond that, not sure of next steps. Of course, I would like to 
avoid a major teardown.

> Any suggestions? Swap cams? Swap cam followers? I see broken piston ring as 
> a noise cause. Would this also have a performance impact?
> 
Thanks,
Russ 
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