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OIL PATH AMC DISTRIBUTOR GEAR OILING |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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Posted: Jul/25/2018 at 10:58pm |
Something I'm working on, decades of discussions, part pictures, and descriptions,
but think I have yet to see a section view line drawing showing the AMC V8 DISTRIBUTOR DRIVE GEAR OILING OIL FLOW PATH... The apparent "Achilles Heel" of successful aftermarket AMC Part Manufacturing and Fitment... Sure do miss having working 3D AutoCad software... 07-31-18 Drawing Updated R-4 - Add Rear Cam Journal Oil Vent Hole, etc 09-03-18 Dwg Updated R-5 - Show "non-stock" Sprocket Front Groove(s) Oil. Feedback appreciated... Rev-5 Version 09-04-18 1st Version 07-26-18 Line Drawing & picture showing OIL NOTCH in back of TIMING GEAR Here is a very good VIDEO graciously made with considerable effort by 401MATCOUPE which presents a clear visual of the oiling and the "questionable" (non-stock apparently) Grooves in the Front Face of aftermarket Cam Mounted Timing Chain Sprockets. Video also mentions the importance of the Crank Oil Slinger (crank oil shedding). Visible Oil flow volume may indirectly "support" reasoning for Drain Back Modifications that can be done to the inside of the Timing Chain Cover "Ridge" and/or the Front Crank Main Bearing Cap (increased drain back clearance gap): Add - Overall AMC Block Oil Circuit Diagram: Edited by PHAT69AMX - Sep/03/2018 at 7:25pm |
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FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4742 |
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Nice of them to have that method of positive gear lubrication. Many engines just hope that enough oil gets splashed on the gears to keep them happy. AMC thought ahead on this one.
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1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
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Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5122 |
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Nice illustration! Don't forget the oiling grooves in the timing gear that sprays oil between the timing gear and fuel pump eccentric. -Steve-
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amx600rr
Supporter of TheAMCForum Joined: Jan/26/2014 Location: Florida Status: Offline Points: 420 |
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That Looks Great! Only minor point is the "Start point in the Cam Journal is "Up" around the 11 oclock position (when keyway at 12 oclock) when the oil passage in the Timing gear is at 6 oclock You show it at 6 oclock on the cam journal. The flow looks dead on. (And thank you for leaving out the "slinger grooves" that are stealing the oil volume and causing the problem) jerry |
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5476 |
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Yea, these slots that I braze shut. The worst one is right at the transfer slot. |
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Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5122 |
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I modify them as well. I weld them up, have it machined flat then put two shallow grooves in away from the keyway and oiling feed areas. -Steve- |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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Could someone be so kind to post a Picture of the Front Side of a known STOCK 1969 AMC V8 Cam Timing Chain Sprocket / Gear? Thanks for the comments, working on revising the drawing. Considered showing the front Timing Gear "oil slinging grooves" but... wanted to avoid "clutter" and show only Distributor Gear Oiling Path and I fail to remember seeing those Grooves in stock OEM AMC Timing Gears but no longer have old used stock parts on hand for reference or pictures.
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5476 |
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It is the bottom one with no notches and missing nylon teeth. http://theamcforum.com/forum/timing-chain-gears-question_topic67102_page1.html This is the factory heavy duty one that didn't have nylon gears. Edited by SC397 - Jul/27/2018 at 10:14pm |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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Thanks! So Stock OEM had no "slinger slots"... but the Heavy Duty did... hmmm...
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5476 |
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Yes but, they were very small. The after market slots are way too big. The True Roller brand changed and now they have way to big of slots too.
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