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Quote from: rumb on Yesterday at 08:44 AMDid mechanic put brake grease on back of pads?
Quote from: ramiro on 08 September 2024, 02:20 AMI actually found out on which cars it was installed , it was for the early Europe Engines that had 8.8 compression ,on those engines they had trouble with headgaskets so Mercedes later reduced the compression to 8.6 and then 8.4 in europe , and wrote in the workshop manual that this valve should be fitted to the engines with 8.8 compression to prevent headgasket failures.This compression story is an interesting point that seems to be lreally off the radar. My car is a 1976 Euro build (pretty early) and lacks that valve. During the rebuild process after my bent rod episode, I discovered that the engine had previously been rebuilt. The new pistons either 8.6 or 8.4, can't recall now. Doing all that certainly cost somebody a lot of $$$. Maybe the car blew a gasket and they fixed the root cause (8.? Anyway, it's interesting that everybody cites the euro 8.8 compression, but nobody seems to know that that most euro 6.9s aren't 8.8 at all. Cheers,
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