Cam Cover Discovery - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 5 (permalink) Old 04-20-2007, 06:12 PM Thread Starter
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Cam Cover Discovery

When we replaced the old cam cover on my '93 Spider Veloce we discovered two areas that had been ground out by someone before us (at the factory?).

It appeared that two points (Photo #2) on the engine would have hit the old cam cover (Photo #1) if it had not have been ground out.

We put the new cam cover on and marked the areas (lipstick) on the new cam cover in the same spots that were ground out on the old cam cover. We discovered that the new cam cover would also hit the same two point two points as the old cam cover unless we ground down new cam cover, also.

We ground the new cover until the "marking" media (lipstick) showed that they would no longer hit the two areas. Has anyone seen anything like this before? It didn't look like the engine made the marks on the old cam cover, but more like someone ground the cam cover before it was installed. I have no engine work identified in the fairly detailed history of my 13k miles car.

P.S. I don't know why I included the stock Harley-Davidson cam shown in Photo #2 (out of my twin cam Harley before I upgraded to a 95 inch kit and a 411 cam)--we were comparing sizes and I forgot to remove it before the photo was taken. It is no longer in the car (heh).
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post #2 of 5 (permalink) Old 04-20-2007, 06:17 PM
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Never see'd that b4, but never actually looked either.

I'll be checking lash in a couple weeks and hopefully I remember to look and get back to this thread on that.




Darren
'84 manufacture ~ '85 MY Spider Graduate

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post #3 of 5 (permalink) Old 04-20-2007, 06:22 PM Thread Starter
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Tifosi, il_formaggio couldn't remember that on his cover when he had it off, either. Very mysterious, wouldn't you say?

These Italian cars keep us on our toes, eh?

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post #4 of 5 (permalink) Old 04-20-2007, 06:30 PM
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No real mystery, or at least not in the sense of how it got there.

My best guess would be there was an anomoly in the casting of the cover proper (conversely, since it's only on one side and at one end, someone may have been a bit to deep in thier vino when they set up the decking machine to put the gasket surface on), and any number of them came off the line like that since it's not likely they'd just trash them, but would instead have Guido the roustabout sit there all day with a pile of covers and the tools to clearance them in those areas. (see also :busywork)

Now just how many are out there is the big question, and is it relative to a specific manufacture date by month or year.




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post #5 of 5 (permalink) Old 04-21-2007, 06:37 AM
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Obviously adapted for a "High Lift" cam.

Currently Owned:
1957 Giulietta Spider (Maria - Home from the painter!!)
1988 Quadrifoglio (Tony)
1987 BMW 653CSI (Gustav)
2002 VW Passat Wagon V6
2012 VW Tiguan SEL 4-Motion

Gone, But Not Forgotten:
1966 Giulia Sprint GT
1994 164LS 5-Speed

Working on:
1959 Giulietta Spider - Restoration
1967 Fiat Dino Coupe - Restoration
1967 Duetto - Freshening
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