Well, I'm a certified moron and this is my first rebuild, to boot...yet I felt comfortable putting in the rear main seal in my 390. So yeah, I swear by the book.

 

rapidruss,

thanx for the info its 9am for me here in cali, iam gonna call the machine shop and get their input as well.

also a great ty to all to replied to my question.

 

LOL..Might be kinda hard to get anyone on a holiday? But like i said, for a Non Hi-perf application there know reson to do any special oil mods!! JMO!!

RJ

 

Today was a holiday? Hmmm every day's a holiday for me till I get back to work. Maybe that's why the kids were home today?? I just thought they were slacking off.

JK...

G.

 

Yeah someone here in the south said it was MiLK day? WTF???

RJ

 

yes today is MLK day, but the machine shop is open today, and they said its ok if the bearing hole and oil hole in block dont exactly match up, they said ford did this to restrict some oil flow, for my application.

 

Now that sounds like a bunch of road apples on
oil hole alignment or lack of. What's he smoking?
Even if it's a lawnmower motor I would align the oil holes.

Russ; remember MLK saw the light, it was muzzle flash.

 

f250'67, you may want to consider finding a new machinist. The one you have is A) lying to you, or B) doesn't know what he is talking about. Yes, there is a misalignment there. And Ford knows about it now, and knew about it when the engine was made new. What most of us are refering to when we talk about the misaligned holes has to be the way it is because of where the main bulkheads are. In the early sixties, there was a ford service bulletin with drill bit sizes for the minimum allowable area for oil flow when the engines were serviced if what ever work required the crank to come out. So, yes, Ford built them that way and they knew about and thought it was okay. And for most engines, for 10s of thousands of miles, it was and is okay. But to claim that Ford did it on purpose to restrict oil to the mains shows a complete lack on basic understanding of how oil flow works in an engine. Itwas a production line thing. The best way to go would have been to use a die grinder with a tapered bit to 'lean' the holes over in sort of an oval shape so all the oil can go into the bearing freely. But that would have taken just a bit more time and money to do. Since 99 out of 100 engines did just fine without any help, the speed demands of the production line meant this was not done. You can do it yourself and it is easy and really shouldn't take you more than 10 minutes. You'll spend more time washing the block to make sure there are no shavings anywhere than to do the actual work. I have done this to dozens of blocks at my work and we have NEVER had any trouble with oiling on any of them. It seems like awfully cheap insurance to me. There is a place where the IS an intentional restriction on many blocks.....does your guy know where ? Has he enlarged the passage from the pump to the filter pad ? How about from the filter pad to the main gallery ? Interestingly, my 427 had all these oil tweaks already done from Ford. My supposition is that Ford was more concerned with the durability of the well know performance engines than it was with grocery getter engines. Do you want your engine built to 'stock' specs or would you rather spend a few minutes to ensure durability ? It is YOUR engine, you can choose what to do based on facts, rather factory cost cutting shortcuts or misinformation. DinosaurFan, @ work on lunch

 

Good info Dino. Thanks

 

Well Dino, I have too respectively dis-agree with you on this one.... If indeed ford knew about this problem...and was inclined not to fix it..Because it would do harm to there engines..It would have been changed in a heart beat! Pulling a couple Molds out of production a day and fixing the problem would not have backed up production..Jesus ..they made these blocks for 20 + years..and they ALL were once on warraunty!

Look back then at the Quality of the Oil..No where near what Oil we have out there today! The Oil was restricted to the top.. Because of all the moving parts in the Valvetrain that needed Oiling , rather than the crank and mains in which ride on a cushion of oil as long as pressure is there..

In the Valvetrain you have too Oil the rocker shafts.. the rockers, the rocker tips. the Valve springs, you have to cool the Guides, Valves... None of which float in a film of Oil... JMO..

RJ

 

Just a quick note Dino...If everyone including ford knows that the Oil holes are mis-located....Then why Didnt the Bearing manufactures make bearing that are offset to align with the holes for Hi-Perf applications?

I'am Not trying to get in a pissing match with you, because I do respect your opinion... This Problem has been addressed many times before..and you can ask 100 people..and get 100 different answers...

RJ

 

Russ, I'm too tired ( too old ?! ) to get in a pissing match, I might lose ! CRS does terrible things to ones memory. Surely, however, we can have a freindly discussion on the issue, can't we ? I'll go on the presumption we're all freinds here. I have never seen any bearings with the oil hole offset, but some of them do have a much larger hole. King, Vandervell, FM and Clevite all seem to have slightly differant size holes. I don't recall who has the largest. Do you disagree with my whole thought on the issue or just a specific point ? DinosaurFan, on work's discarded old 'puter

 

LOL, No Dino Like you were just talking about it..and I dont need a pissing match either ..God knows I go thru some of that with some of the Kids.. But Like you said..There are 2 sides to the coin...and just from my years with ford..(not many) I will admit that.. In doing Hi-Perf builds.. It really hasnt made any since to Do any Oil mods to a daily driver... But with that said..the new stroker as 3 other CJ and 5 390's in the last 3 years that I had built for street strip..I did the mods to them..

But Like we both agree apon..unless you were an engineer in FOMOCO...or a QC inspector..we really dont know...and we could beat this dead horse til the cows come home..and we both could see different views... I have had it in my mind that what I understood as pressure Oiling was what I saw in the resriction in the FE's... But some agree and some dont..

Hey as long as we all enjoy the life and hobby and dont get towed home from the Hwy or the track WTF..LOL.. Just bench racing!! Agreed?

RJ

 

Well you have both helped me out . As i have two 272 Y blocks with spun center mains. I can't remember how many engines I have rebuilt from the 50's through the 90's. As I have owned and operated two repair shops at the same time through the 80's and early 90's. And yes I thought that the off set hole was to build oil presser to the top end. When I tear my next y block down that is still runing with the center main still working. I will use this info to deside what I should do to improve oil to the center main. Thanks for the debate.

 

Hey Richard....what acreage selling for nowdays up there??

RJ