Interesting thread...

I always run my ALDA backed out full CCW. I discovered that it had 1.2 mm of shims under it, and I went out to a full 3.0mm of shims, each .75mm of shim seems to be about the same as 1 full turn CCW on the screw.

I also monitor boost and EGT and running 12-14 psi and 3.0mm of shims under the ALDA seems to give the very best performance, especially at 4400 ft/asl where I live.

One thing I noticed yesterday while going through my box of Benz junk...I have an ALDA that you can blow through, but will quickly seem to 'seat' some sort of valve inside. I am wornering if this is normal, or should the ALDA be like blowing into a vacuum advance' 100% resistance????

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Where'd you get the shims? I broke my ALDA by trying to back it off too far...now I have a good used one but I don't want to risk adjusting the screw, not knowing where it currently is in the adjustment range. The car can't get out of its own way if I install it set as-is, so clearly I need a pretty significant shim thickness.

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1981 Mercedes 300TD, 1994 Honda Civic Del Sol
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