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OIL PATH AMC DISTRIBUTOR GEAR OILING

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Hurst390 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2019 at 4:26am
I've never blown up an AMC going around corners with a wet sump pan.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote White70JavelinSST Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2019 at 11:29am
Originally posted by Hurst390 Hurst390 wrote:

I've never blown up an AMC going around corners with a wet sump pan.


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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Post Options Post Options   Thanks (0) Thanks(0)   Quote BassBoat Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2019 at 1:48pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2019 at 5:23pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bwamx Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2019 at 7:23pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Nov/01/2019 at 4:50am
Originally posted by bwamx bwamx wrote:

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. 
Yes 1 rear on each head and one on right front
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Nov/01/2019 at 12:34pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote amc67rogue Quote  Post ReplyReply Direct Link To This Post Posted: Nov/01/2019 at 2:25pm
  ( 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.
Keith Coggins 67Rogue X code
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RobinPDX Quote  Post ReplyReply Direct Link To This Post Posted: Jan/19/2021 at 4:52pm
Originally posted by PHAT69AMX PHAT69AMX wrote:

The "other side of the coin"...
Guess while we're at it, this also impacts Distributor Drive Gears.
Correct interface between Distributor Shaft and Oil Pump Gear Shaft...
Wish I still had some known factory original parts to measure...
Wonder if Matt at BullTear has any original AMC Engineering Drawings of this area?
An AMC rebuild will replace Oil Pump Gears and often the Distributor.
Resulting in the mating of two new aftermarket non-stock items with possibilities
of incorrect dimensions and/or fit or interference in the below circled areas.
Compounded even further when the Timing Chain Cover is replaced. 
Square Corners can run up against radius of machining preventing proper engagement.
Causing Oil Pump, Distributor, and Distributor Drive Gear problems... And...
this interface is "hidden" once the Distributor Drive Gear is installed on the shaft!
All new parts must be on-hand and trial assembled well before doing final assembly.
Your all's thoughts? 

Very excellent point to verify on the whole topic of cam gear oiling  / TC Mod correction issues!






Edited by RobinPDX - Jan/19/2021 at 4:54pm
Rob Wiley
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