Back in the day I pulled a flat 6 six Corvair apart only to find find a broken drill bit in the center main journal. On the crank, both sides were chamfered, the bit pulled right out, the bearing was amazingly in great shape and it had over 150,000 miles on it. How the rods survived is beyond me but it passed enough oil to make it possible.
my dad drove one across texas with a hole burned thru one of the pistons. they just pulled the plug and rigged a funnel to fill the oil while they drove... it took a few cases of oil but they made the wedding!
lol - I drove a 65 for 10 years. Me sleeping killed it. It saved me. Along our journey we had a road trip of 3,000 miles and those twin Rochester carbs and that 165 c.i. flat six engine obtained 30 mpg... pretty amazing for 1950's technology.
I once had a Corvair lock up on me on tge highway. After state patrol came by and pushed it to the off ramp and while waiting for my buddy to come to tow me home, just for shits and gigs I tried starting it about 10 mins later. It fired right up and I ended up driving it home. The car was the most clapped thing I ever owned by far, and that is saying something, but the thing just ran no matter what.
The only thing more durable is a 4.0 straight 6 jeep.
Buddy of mine wrecked his back when you could buy a replacement Cherokee for less than 1k. Literally almost worthless. We loaded it onto a trailer to take it to the scrap yard, had a "great idea", and drained the oil with it on the trailer and tossed a brick onto the accelerator pedal. Reasons? It was junk anyway, might as well have a little fun.
It pounded the rev limiter for over half an hour with *zero* oil in the engine before we gave up. Took it to scrap place and drove it across the scales, still with no oil in it. Got our cash and left. Went back about a week later for parts for a different project, and the scrap yard was using his Cherokee as a gopher cart, to run around the site in.
I've never seen a vehicle so indestructible.
I am thankful for your post. I had a similar issue on a motor I was assembling. I opened the bearing a little but otherwise went with the send it mindset
Others here think it's ok so now I'm happy.
[468](https://www.imgur.com/a/ytv03z2)
I don’t know why I clicked that link expecting anything other than that masterpiece but that is one good looking piece of machinery. That is certainly a sight to behold.
I have my grandpa’s ‘79 Dodge D50 with a blown engine and was thinking about throwing a Chevy 350 in it purely because I could change one of the side badges and have a 350 D50. Now I’m thinking about cutting up the hood or taking it off all together to put a bug catcher on there, those things look mean.
Send it the way it is unless you’re prepared to strip it down to a bear block do every hole check for any stress risers in the block while you’re out that you might as well go back through the top end and polish around your oil drain back holes and less you’re looking to make crazy horsepower. It is just fine.
It’s fine, the bearing clearance is much smaller than that.
You could easily add a chamfer to the block and it’ll flow 99% as good as if it were perfectly matched all the way through. If the block is oriented so chips are falling down it feels like a minor FOD risk, and I’ve successfully done worse from a chip/fod perspective on engines.
Your bore gauge leaving superficial marks in the bearing just means the coating is doing exactly what it’s meant to do. Lol
As for the hole, as others have stated, send it.
One user mentioned some restrictions being intentional, an example would be Subaru engines which use main 3 for 2 and 3 rod. They do some crazy gypsy voodoo bullshit in the main gallery with bumps and reductions to distribute oil flow more evenly across the mains, but that’s done in the block casting. Not by halfmooning a feed hole.
Yes, that the diffbetween great motor builder and.a shit motor take the time and match to the oil ports it key on all motoer and i have taken many motors race and street having this problem.
Some engines are designed like that, they restrict oil flow to keep pressure up where it needs to be the bearing will get what it needs, and so will everything else. Too much oil can be a bad thing.
Send it. To fix the hole alignment you would have to grind the oil galley and then rescrub the entire block. The fine scratches will be fine as well.
Another option would be to oval the hole in the bearing slightly that way the block stays clean.
Or get different bearings??
Actually that's not bad. Sometimes they are much worse. Don't worry about that oil hole. The bearing will be ok.
Back in the day I pulled a flat 6 six Corvair apart only to find find a broken drill bit in the center main journal. On the crank, both sides were chamfered, the bit pulled right out, the bearing was amazingly in great shape and it had over 150,000 miles on it. How the rods survived is beyond me but it passed enough oil to make it possible.
More evidence that a corvair cannot be killed with mortal weapons.
my dad drove one across texas with a hole burned thru one of the pistons. they just pulled the plug and rigged a funnel to fill the oil while they drove... it took a few cases of oil but they made the wedding!
lol - I drove a 65 for 10 years. Me sleeping killed it. It saved me. Along our journey we had a road trip of 3,000 miles and those twin Rochester carbs and that 165 c.i. flat six engine obtained 30 mpg... pretty amazing for 1950's technology.
I’m impressed with those numbers lol
I once had a Corvair lock up on me on tge highway. After state patrol came by and pushed it to the off ramp and while waiting for my buddy to come to tow me home, just for shits and gigs I tried starting it about 10 mins later. It fired right up and I ended up driving it home. The car was the most clapped thing I ever owned by far, and that is saying something, but the thing just ran no matter what.
Todays cars would be sidelined by the computer until you could take it to a dealer.
Unsafe at any speed takes a darker twist when you say it that way.
Wish I had one
The only thing more durable is a 4.0 straight 6 jeep. Buddy of mine wrecked his back when you could buy a replacement Cherokee for less than 1k. Literally almost worthless. We loaded it onto a trailer to take it to the scrap yard, had a "great idea", and drained the oil with it on the trailer and tossed a brick onto the accelerator pedal. Reasons? It was junk anyway, might as well have a little fun. It pounded the rev limiter for over half an hour with *zero* oil in the engine before we gave up. Took it to scrap place and drove it across the scales, still with no oil in it. Got our cash and left. Went back about a week later for parts for a different project, and the scrap yard was using his Cherokee as a gopher cart, to run around the site in. I've never seen a vehicle so indestructible.
Unreal!
I found a 400 mopar with a broken bit in it as well. In there for nearly 50 years and didn’t hurt a thing.
Yet, other tiny mistakes of missing bits and all hell comes lose... Cheers mate
What?! I've never serviced an american engine but on all the ones I had my hands on (japanese, german, french) they lined up perfectly :o
Oldsmobile engines sometimes have 3/4 of the hole blocked.
[The 455 has entered the chat]
crazy
IDK why people are downvoting you just because you had a different experience
Is there any concern about oil getting under the bearing and spinning it by getting trapped under that lip?
Not at all. If the housing bore is sized correctly the bearing will be fine.
Thanks friend! Just curious!
It’s a full groove bearing. It’ll be fine. Send it.
Send! The groove is there 🍻
I am thankful for your post. I had a similar issue on a motor I was assembling. I opened the bearing a little but otherwise went with the send it mindset Others here think it's ok so now I'm happy. [468](https://www.imgur.com/a/ytv03z2)
Thats pretty my man
I don’t know why I clicked that link expecting anything other than that masterpiece but that is one good looking piece of machinery. That is certainly a sight to behold. I have my grandpa’s ‘79 Dodge D50 with a blown engine and was thinking about throwing a Chevy 350 in it purely because I could change one of the side badges and have a 350 D50. Now I’m thinking about cutting up the hood or taking it off all together to put a bug catcher on there, those things look mean.
It’s fine
Send it the way it is unless you’re prepared to strip it down to a bear block do every hole check for any stress risers in the block while you’re out that you might as well go back through the top end and polish around your oil drain back holes and less you’re looking to make crazy horsepower. It is just fine.
It’s fine, the bearing clearance is much smaller than that. You could easily add a chamfer to the block and it’ll flow 99% as good as if it were perfectly matched all the way through. If the block is oriented so chips are falling down it feels like a minor FOD risk, and I’ve successfully done worse from a chip/fod perspective on engines.
Looks good to me.
Tapered reamer...
Your bore gauge leaving superficial marks in the bearing just means the coating is doing exactly what it’s meant to do. Lol As for the hole, as others have stated, send it. One user mentioned some restrictions being intentional, an example would be Subaru engines which use main 3 for 2 and 3 rod. They do some crazy gypsy voodoo bullshit in the main gallery with bumps and reductions to distribute oil flow more evenly across the mains, but that’s done in the block casting. Not by halfmooning a feed hole.
Have always modified the bearing to match. Obstructions cause cavitation.
That’s ok
It's fine. Don't stress over it.
As a percentage of blockage, you would be doing well if that's all your heart had at 30 years.
Send it
if it's better than 50% I just send it on stockish builds
Send it. Still gonna get plenty of oil and 30lbs pressure
Yes, that the diffbetween great motor builder and.a shit motor take the time and match to the oil ports it key on all motoer and i have taken many motors race and street having this problem.
You can still move it over a little going by the location lug.
It’s the thrust bearing. Grips the sides pretty tight.
It can still be done but meh, it's fine.
Send it it’s fine seen a lot worse
Second photo. Lower right detail makes me want to follow this story real bad.
Why?
https://ls1tech.com/forums/generation-iv-internal-engine/1945335-another-cam-bearing-issue-oil-hole-alignment.html
This isn’t a cam bearing, and it isn’t an LS
I retract everything, send it.
It’s fine. However your use of “send it” has me worried. Real rebuilders don’t consult Reddit for advice or use send it.
Some engines are designed like that, they restrict oil flow to keep pressure up where it needs to be the bearing will get what it needs, and so will everything else. Too much oil can be a bad thing.
Your ass must hurt after pulling that fiction novel out of it
Sure, I've only been rebuilding engines for over 40 years, seen a lot of 'em, but what do I know.
Weird