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#1
09-10-2023, 03:21 AM
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M117/116 cam follower lightening jig
After seeing how long it would take to remove the material from 16 followers with my mill alone, besides how rough on the end mill it would be, I decided knocking off the majority with the band saw was a better idea. I made this little holder from a piece of bedframe. The mill was handy to square things up but it could be made with a grinder if you are capable or crazy enough to start going to town on your followers. These were junk parts for testing. I'm seeing 86 grams difference. I think for the good ones I will make a little cap from some thin stainless to go over the valve end and protect it from rubbing on the side of the saw blade. Once it's set into the holder I just grabbed the square lifter end with a pair of vice grips. I'll do a pass on each side on the mill to even them all up. I think I can grab 4 at a time in the vice. I'm pulling the followers to do the timing chain and guides in a 560sl engine going in my 450slc so I thought I may as well do the AMG mod while they're out. It's going to get spun to the moon constantly so it can't hurt.
      Sent from my SM-G991U using Tapatalk
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WARNING!!! VINTAGE MERCEDES MAY MULTIPLY UNCONTROLABLY!!! I have tons of Sl/Slc parts w108 w111 w126 and more. E-mail me with needs BirchsgarageMB@gmail.com 
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#2
09-12-2023, 12:20 AM
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I wonder why the extra material is there-seems to serve no purpose. Same on the connecting rod big end. There is a large pad that is way too big to serve the purpose of weigh matching.
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 Tony HW111 280SE 3.5 Coupe Manual transmission Past cars: Porsche 914 2.0 '64 Jaguar XKE Roadster '57 Oval Window VW '71 Toyota Hilux Pickup Truck-Dad bought new '73 Toyota Celica GT
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#3
09-12-2023, 01:01 AM
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Nifty!
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 90 300TE 4-M Turbo 103, T3/T04E 50 trim T04B cover .60 AR Stage 3 turbine .63 AR A2W I/C, 40 LB/HR MS2E, 60-2 Direct Coil Control 3" Exh, AEM W/B O2 Underdrive Alt. and P/S Pulleys, Vented Rear Discs, .034 Booster. 3.07 diffs 1st Gear Start 90 300CE 104.980 Milled & ported head, 10.3:1 compression 197° intake cam w/20° advancer Tuned CIS ECU 4° ignition advance PCS TCM2000, built 722.6 600W networked suction fan Sportline sway bars V8 rear subframe, Quaife ATB 3.06 diff
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#4
09-12-2023, 10:27 AM
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Quote:
Those "wings" are guide surfaces for the springs that are used with the cam followers on engines that have mechanical valve adjustment: Early (pre-'76) M116/117, & M110. Engines that have hydraulic lash compensation do not use the springs; hence the guides are orphans.
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#5
09-13-2023, 04:15 AM
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Yeah I thought that may be the case. That or for machining fixturing.
Sent from my SM-G991U using Tapatalk
__________________
WARNING!!! VINTAGE MERCEDES MAY MULTIPLY UNCONTROLABLY!!! I have tons of Sl/Slc parts w108 w111 w126 and more. E-mail me with needs BirchsgarageMB@gmail.com
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#6
09-13-2023, 04:18 AM
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I did weigh the valve end with the ball end supported and saw 61grams at the valve . Thats pretty significant. Stupid pic is blurry but only the tip is touching the scale.
 Sent from my SM-G991U using Tapatalk
__________________
WARNING!!! VINTAGE MERCEDES MAY MULTIPLY UNCONTROLABLY!!! I have tons of Sl/Slc parts w108 w111 w126 and more. E-mail me with needs BirchsgarageMB@gmail.com
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