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OIL PATH AMC DISTRIBUTOR GEAR OILING |
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RobinPDX
AMC Apprentice Joined: Dec/07/2020 Location: Oregon Status: Offline Points: 191 |
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Posted: Jan/19/2021 at 4:52pm |
Edited by RobinPDX - Jan/19/2021 at 4:54pm |
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Rob Wiley
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amc67rogue
AMC Addicted Joined: Nov/05/2008 Location: Phx. AZ. Status: Offline Points: 1578 |
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( Full Groove front most cam bearing and or journal !) All front cam bearings had a grove in them The early camshafts ( 66 early 68 ) did not have a grove in the front cam journal. The first couple yrs. they had a lube problem with the Cam and Dist. gears. There was a Field Fix from the dealers to tee a oil line from the pressure switch to the front cover to get more lube to the gears. All 68 and up cams had a grove in the front journal. NOW 50 plus yrs. later there is a mix of flat tappet cams that do not have the front journal grove. All of the roller cams I've seen DO NOT have the grove.
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Keith Coggins 67Rogue X code
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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This is just a drawing I know, and rotated into position in PowerPoint to create this image,
but it gives some general idea of the amount of slope in the stock cyl head oil drain back holes and just how shallow, or just how little slope, there actually is in those drainback passages. I'm fairly confident this is correct, 45 deg block deck surface, cyl head drawing oriented as-if on block. Edited by PHAT69AMX - Nov/01/2019 at 12:36pm |
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Hurst390
AMC Addicted Joined: Apr/20/2008 Location: secret Status: Offline Points: 5818 |
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SC/Hurst Rambler
11.62 120 100% Street Legal |
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bwamx
AMC Apprentice Joined: Mar/27/2012 Location: CT Status: Offline Points: 143 |
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Are those oil drain back lines from the valve covers
On the drivers side of the oil pan? We use to run those along with a Similar home made oil pan on a IMSA hornet before going to a sump system.
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Hurst390
AMC Addicted Joined: Apr/20/2008 Location: secret Status: Offline Points: 5818 |
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SC/Hurst Rambler
11.62 120 100% Street Legal |
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BassBoat
AMC Addicted Joined: Aug/29/2008 Status: Offline Points: 1719 |
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Hurst390 do you run a pan with more volume, something like the Canton road race/street oil pan, or if you have something you made can you describe it?
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4866 |
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Penske racing blew up Traco built AMC engines back in 1970. Tha was before Traco figured it out and SCCA allowed dry sump oiling.
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70 Javelin SST, second owner, purchased 1972
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Hurst390
AMC Addicted Joined: Apr/20/2008 Location: secret Status: Offline Points: 5818 |
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I've never blown up an AMC going around corners with a wet sump pan.
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SC/Hurst Rambler
11.62 120 100% Street Legal |
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Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5122 |
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I did this type of testing a few years ago when I was chasing an oil pressure problem. Running the oil pump with a drill won't flow as much as if the engine were running for a couple of reasons. One reason is the oil is cold and thick when using a drill. Another is since things aren't moving feed holes aren't moving around and being lined up with the pressurized oil feeds during rotation. For my testing I looked at the drainback paths in the heads as well as how much was flowing past the crank bearings. Got video of running engine valvetrain oiling and drill driven pump valvetrain and crank bearings. Instead of restricting the oil feed in the block I used restrictive pushrods. Easier to change if need be. -Steve- |
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