Valve Clearence Question - Mercedes-Benz Forum
 
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post #1 of 4 (permalink) Old 05-25-2019, 10:02 AM Thread Starter
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Question Valve Clearence Question

What is an acceptable clearance for the valves? I had my cams ground and replaced the rocker arms and when I check the clearance with the go no go gauge, the bottom of the notch on the gauge lines up directly with the top of the tool. Is this acceptable or do I have to replace the compensation elements?
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post #2 of 4 (permalink) Old 05-26-2019, 04:42 AM
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If you're talking about an early 380sl (81, 82) there is no clearance... only preload. If the bottom of the notch is even with the top of the gauge (insufficient preload) then it would appear you need a thicker Thrust Washer. They are sized in .35mm increments so take the Thrust Washer out and measure it's thickness (at it's smallest point) then order the next larger size. Their price at $20+ bucks a piece will make you weep.

Good luck.

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post #3 of 4 (permalink) Old 05-26-2019, 12:16 PM Thread Starter
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Originally Posted by Jyuma View Post
If you're talking about an early 380sl (81, 82) there is no clearance... only preload. If the bottom of the notch is even with the top of the gauge (insufficient preload) then it would appear you need a thicker Thrust Washer. They are sized in .35mm increments so take the Thrust Washer out and measure it's thickness (at it's smallest point) then order the next larger size. Their price at $20+ bucks a piece will make you weep.

Good luck.
I'm swapping out my single row timing chain engine for a 117, out of an 85 500SEC. I've never worked on this type of valve train so this is all new to me. I priced them at Autohaus AZ. Around $22.00 each. Ouch! I'll see if I can get a better price at my dealer.
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post #4 of 4 (permalink) Old 05-26-2019, 02:47 PM
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Size may matter but Look in the Supporting Vendor section of the forum. This one offers a code for shipping and $18.50 price on at least one size. https://www.mboemparts.com/oem-parts...her-1170530053
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