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Old 10-12-2007, 09:31 PM
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KAdams4458 KAdams4458 is offline
Mmm! Diesel!
 
Join Date: Apr 2007
Location: Snohomish, WA
Posts: 1,420
Quote:
Originally Posted by patbob View Post
Am I missing something? With scores like that, how can you even set the valve clearances? Won't the clearance that the valve sees to the cam always be something greater than the clearance you measure because of the groove depth? Am I safe in assuming that might matter?
Yeah, it makes setting the valves rather difficult. I fudged around with them a while, and eventually gave up and just left them on the loose side, and a serious improvement resulted. Then I spent a couple of months hunting for a good camshaft locally. I finally lucked out one day at a self-service yard, and came up with the updated camshaft, towers, rockers, shafts, and stem nuts from a very nice looking '80 or '81 for about $35.

As for valve adjustment on my old cam in particular... Let me put it this way: If I were to slip a thin feeler gauge between the cam and rocker when the cam was pressing on it, I'd have a v-shaped groove in the gauge. That's how bad this cam is. It's more like a bead roller than a camshaft at this point.
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'77 300D Euro Delivery
OM617 turbo / 4-speed swap
404 Milanbraun Metallic / 134 Dattel MB-Tex

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