Unusual block issueJune 15 2017 at 4:27 PM
Barry R (Login Barry_R)
Never seen this one before.
Block is 1969. Core, so I have no history. Shows signs of a light hit in #8.
See anything Unusual?
|This message has been edited by Barry_R on Jun 15, 2017 4:35 PM|
#4 cam bearing bore?
|June 15 2017, 4:37 PM |
|June 15 2017, 4:42 PM |
Now look at number 5. Remember that this is a 390. Center oiler. The main gets oil from the...
|June 15 2017, 4:43 PM |
Looks like a thinwall sleeve in #4 cylinder.
428 powered Fairmont drag car, Best ET:9.97 @132.56MPH, best 60 ft: 1.29
59 Meteor 2 dr. sedan 332, Ford O Matic
74 F350 ramp truck 390 4speed
1985 Mustang 331 4 speed Best ET10.29at 128.7mph, 1.40 69 foot
|June 15 2017, 5:03 PM |
But how does #5 main get any oil?
#5 main oiling
|June 15 2017, 5:30 PM |
Two possible ways to oil number 5 main. 1. Grooved #5 cam journal and or #5 cam bearing. 2. Rod bearing oil passages connected on that journal ( like a porsche ). Or a factory defective block ?
My best guess
|June 15 2017, 6:24 PM |
is like your comment - factory off line "repair" might have been a grooved rear cam journal. Quick, easy with existing products. Then upon rebuilding it probably failed quickly and was parked on the side for who knows how long.
|June 15 2017, 6:35 PM |
Hey at least you caught it. It could have been bad
Grooved Cam Journal
|June 15 2017, 7:03 PM |
Didn't some FEs come with grooved cam journals?
Yes - but in number two and number four
|June 16 2017, 2:40 AM |
to feed the overhead on sideoilers. I've never seen one grooved in number five.
Seems Far Fetched
|June 16 2017, 3:12 AM |
But could it be possible that there was enough oil bleed from #4 rod journal that it kept #8 lubed and forced some oil down to #5 main?
Re: Seems Far Fetched
|June 16 2017, 8:43 AM |
Most cranks weren't drilled from #4 Rod to #5 Main. Oil for #4 Rod came from #4 main. However, if the crank was drilled that way, it would provide oil to #5 main.
Machining needed. I would bet that #4 CB will be tight too.. n/m
|June 16 2017, 9:35 AM |
|This message has been edited by mikes65 on Jun 16, 2017 9:38 AM|
Take Another Look
|June 16 2017, 10:52 AM |
We are saying the same thing. There are no cranks I know of that intentionally oil that way either. I should have said oil up to #5 main sense the oil would be going against inertia.
|June 17 2017, 4:10 AM |
Yours is easier to fix than mine was. Grind an oil feed groove.
Re: Unusual block issue ... Barry R. ...
|June 17 2017, 6:29 AM |
Is there any evidence of an engine assy date / inspector code or VIN on this cyl block? Or history that the cyl block actually came from a vehicle? Any repair process would have to been developed, verified, then signed off. I doubt no one would of wrote a pink deviation form to repair only one cyl block, too much time and effort involved, over the value.
It's possible this cyl block was scrapped at DEP, then was sold to a Ford Reman for disposition/repair, then somehow was "liberated" from there. Recall the 427 cyl blocks that went to Fred Jones with missing tapped holes, broken taps in the cyl block, oil passages that leaked, etc. ... . Years ago, I set up a program to ship our scrap production torque converters to FAR - Alma Products, who would cut them open and salvage usable "premium" internal components for remanufacturing other converters.
On the bridgeport and some willy time and your golden!!
Is that one of the blocks
|June 18 2017, 9:53 PM |
I brought back last May? They were scrap yard blocks I pulled put of Vehicles.
Richard >>> FERoadster.
Honestly do not know the source
|June 19 2017, 4:03 AM |
It has a "9H7" 1969 date code - really nothing unusual until we found that odd issue. So anything is possible. We know that it was running at one point, and that it got previously rebuilt at least once (overbored). Beyond that is only guesswork.
|This message has been edited by Barry_R on Jun 19, 2017 4:04 AM|
And It Ran
|June 19 2017, 8:53 PM |
Back in the middle 50's I saw a early Cadillac crank that had one journal with no oil hole. How it ran without the hole, God knows. The bearing looked great. Evidently it ran on the splash from the adjacent rod.