Is this normal, I've not looked them up. I do know that they did not work too good in this engine. But I don't know if it was just run with low or no earl!
https://youtu.be/tSMM1gr78Oo
Attachment 477648
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Is this normal, I've not looked them up. I do know that they did not work too good in this engine. But I don't know if it was just run with low or no earl!
https://youtu.be/tSMM1gr78Oo
Attachment 477648
Attachment 477654
Attachment 477655
I'm googling cross references, and I'm not seeing that Ford makes camshaft bearing for Yamaha outboards. Was this an experimental engine Elon Musk was working on for use on Mars! I betcha it was! A very special engine build for sure!
Attachment 477656
Definitely interesting to say the least
Wow, just figured out this schematic/instructions.
Attachment 477660
Totally crazy. Took me two days to figure it out. Some of the crank numbers you use, and other you don't. You use every other one, kinda. And the numbers on the block I could not even find. They were dirty, but didn't look like it was dirty. Anyway, I found them, and I'm blue/blue for all the crank main journals. At least I know that., Now I gotta figure out the rod end journals!
I'm kinda thinking that whoever rebuilt this previously and installed the Ford bearings, did not select the right size. dono
At least for the rod bearings I can see the color that was used previously. The ford bearings that were used on the main journals were not colored.
Attachment 477661Attachment 477662
One did not have a color though.
With Yamaha, the bearing color indicates it's thickness. Don't know about other brands as I've never done this before. I'll still have to read the manual to see how the rod bearings are measured, sue hope it's easier than the mains. I have to go remove the pistons now. ttyl
It has my curiosity up for sure.
OK, so I have Green/Greens on all the rod end bearings, so I'll get grn/grn ones, and then you test everything with the new ones with plastigauge for the rod bearings and the main bearings. Me thinks me gots a plan. I need rings too. What else......
:popcorn
OK, so I have Green/Greens on all the rod end bearings, so I'll get grn/grn ones, and then you test everything with the new ones with plastigauge for the rod bearings and the main bearings. Me thinks me gots a plan. I need rings too. What else......
If I can take a guess the Main Bearings didn't have the proper clearances and why is binded up.
We need more clearance Clarence!Quote:
Originally Posted by Rojo
Attachment 477666
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So the question still remains for me. Are the Ford bearings the right bearings
They physically look correct. They just may be wrong size. I should be able to tell more once I get the new ones.Quote:
Originally Posted by DockShootinJack
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Certainly interesting
Do you have a ring compressor to reinstall the pistons?
Nope, just gots a big hammer! It's on my Christmas list though, fingers crossed!Quote:
Originally Posted by Barnacle Bill
Ball Peen Maintenance…..I love it! :biggrin
Near as I can tell, with my little micrometer, and measuring the existing ford bearing, they are too big. I could be wrong, but they are 6.09's and they should be around 6.04mm. dono if I'm reading things right. Measuring them against new bearing will tell me more. Plus I measuring bad worn bearings, heck they coulda started off at 10mm, dono!
Somebody was doing their homework to get that close
Certainly would explain things, I had this happen to me with a fresh 454. The machine shop gave me .020 under bearings for the crank when it was only ground .010 under. Cooked the Crank, had Great Oil Pressure though.Quote:
Originally Posted by Slab
That would certainly boost the oil pressure
Yeah after rethinking things, I’m not sure of my measurements. Gotta double check tomorrow. Measuring the thickness of a half circle bearing with a flat tipped micrometer is not right. Gotta buy more tools! Yay
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I would use a small ballbearing on the inside them subtract the ballbearing diameter to mic a curved surface.
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Great advice. Will try that.Quote:
Originally Posted by skeeter96
And wow, this video has a ton of great info on bearing wear/failure. Watching it while I have my morning coffee. Love this stuff.
https://youtu.be/sB9dWYhzP6s?si=0PJrqWvyrOLFAREw
:popcorn
https://youtu.be/ySmSo6AOUWY
My latest expert diagnosis as a certified YouTube watcher extraordinaire! I actually emailed this video to the guy from Mahle in the video above. Lets see if I get a response.
Definitely in depth
Is that oil on the casing??? Their appears to be all kinds of Debree where it thinned out while sloshing around. What did the oil look like when drained??? I'm interested in what the person from Mahle has to say as well. Still trying to figure the ford bearings out in a Yamaha outboard...
Oh there's debris, and yes, what you see is oil, and there's some anti-seize consistency like material there. Plus there was lots of glitter in the oil filter as well. I'll have to get a pic of the oil filter, it's looks real pretty now with the oil drained oss it, nice Christmassy glitter!Quote:
Originally Posted by Jamesdean
Lots of metal
Here's the oil filter glitter....
https://youtu.be/2kmrjnTorUo
Personally I think when they hones the cylinders, they forgot to clean out the engine block. dono, just a guess
That is a lot of metal for certain
I spread out the oil filter.
https://youtube.com/shorts/2mrB_K2xUJQ
https://youtu.be/2mrB_K2xUJQ
Hopefully only from those bearings and not from another surprise.
Well if they used Ford bearings for main bearings Lord only knows what other shortcuts were taken. Cracking the Case like you did always gave me confidence in a engine when I did it. You know exactly what you are working with.Quote:
Originally Posted by Slab
If that is from the honing they left lots of abrasives to cause problems
Honing generally doesn't produce material of that size, that's main bearing material IMO.
Very true. Honing waste would not be shiny either
I'm sure you're right about the sparkly stuff. But maybe the honing material took out the main bearings, dono. I'd think wrong bearings would not only scar a channel in the center of the bearing, but the whole bearing. IMHO, debris in the earl took out the bearings, and maybe it started off as bearing material debris (from one bad one, which took out the others). It's kinda like what came first, chicken or the egg.Quote:
Originally Posted by Rojo
Definitely some oddities