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By John Mummert - 2 Years Ago
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A little redundant for you hardened veterans around here but, but you never know who it may help. https://youtu.be/aw1-lKWsmAc
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By napaunderground - 2 Years Ago
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I appreciate this as I'm pretty green re: Y-Block stuff... but I'm learning, and now addicted!
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By Ted - 2 Years Ago
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Geoff. Thanks for posting the video. Absolutely nothing redundant about bringing that back up.
Here’s the link to the top end oiling article that was previously published in The Y-Block Magazine. This article reinforces Geoff’s video as well as giving some additional options for oiling modifications.
Y-Block Top End Oiling Woes – Eaton Balancing
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By DANIEL TINDER - 2 Years Ago
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He makes the point re: how enlarging (massaging) the head passage is futile, since the cam/bearing restriction is so small in comparison. But, if that crooked passage is totally plugged it becomes quite relevant then. I suspect it was a combination of bearing wear restriction AND thus increasing sludge buildup do to decreased flow (50s era non-detergent oil & ignored service interval complicity) that created the problem. Much as the original SBC motors were likely just tossed & replaced rather than rebuilt when they soon wore out (no oil filter/thin wall casting), Ford dealership mechanics would often repair Y-Block top-oiling issues by merely installing service replacement head assemblies rather than waste time grinding valves & cleaning out those poorly designed oil passages.
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By napaunderground - 2 Years Ago
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How do those in the know feel about chamfering the oil passage in the head to smooth out the 90* turn in the path?
Before:
After:
it's hard to see the complete change due to my poor lighting/camera ability...
(but before final cleaning)
was this pointless?
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By DANIEL TINDER - 2 Years Ago
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I assume Geoff qualifies as “In the know” (?). Modern multi weight detergent oil changed on schedule would likely make chamfering (massaging) the passage a superfluous effort, compared to insuring an adequate cam groove depth. Probably couldn’t hurt (for those who run out of things to do), though don’t know enough re: the pros & cons to comment personally.
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By napaunderground - 2 Years Ago
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I didn't catch that `massaging` meant chamfering. Words. English. heh. thanks.  It was fun "thinking" I was doing right... and of course, I already installed the cam and lifters - crank, and timing set. :| before I knew to check what the cam grinder did about the groove. 
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By 2721955meteor - 2 Years Ago
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IF TRYING TO SALVAGE A OLDER Y.,OR OLDER REBUILD REMOVE ROCKER ARM AASSEMBSEMBLY,TAKE OUT COR PLUGS,REMOVE ROCKERS,LIKLEY THE ROCKER SHAFTS FARTHER THAN THE SPILL TUBES WILL BE GAULED. WHILE THE ROCKER AASSEMBSEMBLY ARE OFF REMOVE DIST AND RUN THEOIL PUMP WITH A OLDE DIST SHAFT ,MINUS THE GEAR. IF OILCOMES OUT OF THE HOLES IN BOTH HEADS YOU ARE IN GOOD SHAPE. IF YOUR CAM SHAFT IS THE STYL YOU WILL HAVE TO ROLL THE
ENGINE TO GET OIL OUT BOTH LUBE HOLESAS THOS CAMS HAD HOLES TO LIMIT OIL FLOW.
MY OPINIIAN IS THAT IF VALVE SEALES ARE OK ROCKER SHAFT OK RE ASEMBEL ROCKER SHAFTS,DISCARD THE BLEEDTUBES BLOCK OFF THE ROCKER STAND
SO NO OIL COMES OUT THE HOLE.WHILE THE ROCKERS ARE APART TAP THE EN STAND AND ROUND OFTHE END OF THE CAPSCREW SO ITBLOCKS THE HOLE AND
POSITIONS THE ROCKER SHAFTS AND MAKES IT EASEYER TO ASEMBLE
THER ARE LOTS OF DRAINS AT EACH PUSHROD TO INSURE PLENTY OFOIL TO FRONT AND REAR OF ENGINE.
IF YOU HAVE A FRESH REBUILD AND USE DECENT OIL,CHANG OIL NOW AND THEN NO NEED TO GO THREW ALL THE ABOVE
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By Daniel Jessup - 2 Years Ago
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John,
Thank you, and your son, for producing these videos. We would all like to see the Y Block get positive press, but unfortunately some of the YouTube videos and channels with the highest view counts are either lackluster in their information or are like this one here: https://www.youtube.com/watch?v=JI_TBe1qss4. I cannot imagine someone producing a video with the intent of labeling the Ford Y Block as one of the worst engines every produced, but there it is. And the thing has over 88,000 views. Social media can be a circus at times, and I've seen a LOT of mis-information, lies, and downright negative press for the Y on these types of platforms.
Appreciate your development of quality Y parts as well my friend, carry on.
Hot Rod Reverend
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By Florida_Phil - 2 Years Ago
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Great video. Before I installed my current Isky cam, we measure the center cam grove depth at .018". This was new out of the box. On the advice of this forum, we machined the center groove to .030" deep. We did not widen the groove. With the engine assembled on the stand, we used a speed wrench to turn the oil pump by hand. A good stream of oil flowed into both heads. So much so that I was somewhat worried that there would be too much oil. The rockers were assembled with new unmodified drain tubes in the stock location. This turned out to be perfect for this engine. I have put about 3,000 miles of this engine so far and top end oiling has been excellent. The plugs are perfect and there is no excess oil where it's not suppose to be. Thanks for the great advice.
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By paul2748 - 2 Years Ago
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I heard that ISKY was one of the worst regarding the cam groove despite being told. John Mummert says he always checks the groove in the cams he sells and machines the groove if necessary. I asked him about this when I bought a cam from him.
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By Ted - 2 Years Ago
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Daniel Jessup (11/21/2022)
John,
Thank you, and your son, for producing these videos. We would all like to see the Y Block get positive press, but unfortunately some of the YouTube videos and channels with the highest view counts are either lackluster in their information or are like this one here: https://www.youtube.com/watch?v=JI_TBe1qss4. I cannot imagine someone producing a video with the intent of labeling the Ford Y Block as one of the worst engines every produced, but there it is. And the thing has over 88,000 views. Social media can be a circus at times, and I've seen a LOT of mis-information, lies, and downright negative press for the Y on these types of platforms.
Appreciate your development of quality Y parts as well my friend, carry on.
Hot Rod Reverend
Unfortunately, almost anyone becomes an expert when posting their opinions on the Net. It’s an interesting read though when going through the comments. A majority of the comments are actually favorable towards the Ford Y.
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By Ted - 2 Years Ago
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paul2748 (11/21/2022)
I heard that ISKY was one of the worst regarding the cam groove despite being told. John Mummert says he always checks the groove in the cams he sells and machines the groove if necessary. I asked him about this when I bought a cam from him.
A misconception is that the various cam companies make all their cams from scratch. The various cam companies instead purchase cam blanks from a casting supplier and then simply grind the lobes to their own specifications. The machining of the journals and the hardening has already been performed by the cam core supplier prior to being shipped to the various cam companies.
CWC is a major cam blank manufacturer and it’s CWC that is machining the center groove for the Ford Y camshaft on the shallow side. Most flat tappet camshafts I get here at the shop originate as CWC castings regardless of the camshaft company that’s providing the finished product.
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By darrell - 2 Years Ago
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i never stop searching the web for y block videos.ive seen the one your talking about.after all this time i still see comments here and there about spun cam bearing.
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By napaunderground - 2 Years Ago
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I came across this today. Interesting to say the least. https://www.youtube.com/watch?v=XB_Q9qpvnL0
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By charliemccraney - 2 Years Ago
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Oh, no, not that video again!
Those oiling mods are a waste of time and that whole video should be disregarded. It is an example of what happens when a person who doesn't know Y-blocks builds a Y-block.
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By paul2748 - 2 Years Ago
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And to showcase how bad this build is, he used a 55/56 distributor with a late model carb
charliemccraney (11/23/2022)
Oh, no, not that video again! Those oiling mods are a waste of time and that whole video should be disregarded. It is an example of what happens when a person who doesn't know Y-blocks builds a Y-block.
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By napaunderground - 2 Years Ago
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Yeah, my Y-Block experience is limited... but my many years of other automotive experience intended `interesting` to be interpreted as "seems dangerous and like a bad idea"
That contraption with it's plugs and extra thingies and such seems like a lot of extra failure points, not to mention an extra external leak potential.
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