I’ve been searching for videos to see if it is ok to not have oil holes in the connecting rod/bearings. And then you said oil comes out of the crank shaft and oils the inside of the bearing. And it clicked in my head. Thank you. This video was super helpful
The tang is only for alignment not to keep it from spinning. That is done by the crush. The bearing when installed will stick out alitte on both ends. You must make sure they all stick out the same on both ends and both halves. When you tourqe down the caps it will crush the bearing against the journal.
If you check out vintage engine or obsolete engine parts you can often find .001, .002 undersized. Sometimes someone might have already done that and it's maybe a very good bottom end . Always polish the journals even if you reuse good bearings
If you Nick the Crankshaft with the rod bolt run a very small round file parallel with the rotation of the crank until the nick is gone then polish it, you will have a very small indentation, it will fill up with oil when engine is running and be fine......
great video how ever that notch is just a locating tag to hold it in place when installing the bearings after that the torc on the bolts stops it from spinning hence having the correct torc when doing the conrod cap bolts
Go back to school. It's not a roller bearing in a 2 stroke . There is .002 thou clearance between the rod and the crank. And they do not touch. Grind them off and see them burn up. Put your money where your mouth is.
That tab doesnt stop bearing from spinning. Its the bearing crush resulting from torquing the bolts, pushing the bearings pressing against the bore of the connecting rods that stops it from spinning.
Yep , damn near all spun bearings are a result of it not being held in place firmly enough. If it were fixed in place and the journal makes contact , instead of knocking it loose it would "self-clearance" and probably not hit anymore, at the cost of a few psi of oil pressure instead of another motor.
Exactly right..That is they a new bearing will stick up just a tad. On each half..These need to be aligned right on both halves. So that when you toque them down. Each half will push each other. As they form....
Collective Consciousness Put assembly lube on the faces that face away from the block. In other words where the crank sits and the outside of the thrust face.. yes the back stays dry.
+Josaljo Won It was my first time doing this so I'm learning as I go. Need to torque bolts and tighten in a certain sequence etc...... I only had a problem with one piston with both bearings totally disintegrating into my oil pan causing the rod to knock. I was low on oil and caught it quick. My crankshaft seems to be OK as far as I can tell to the touch. So I replaced the two bearings on the one piston should i grease the face of both of those bearings?
Touch is not good enough, use plastigage to check the clearances and a micrometer to measure the journal, if the journal is out of round it will start to hammer no matter how many new parts you put in it.
Check the id of the rod with no brg as some ford engines came of the production line with oversized rods and mains from new even though the crank was std. came across a few engines with os she’ll backs in my time reconditioning
hello just picked up a nice 350, And the guy i got from took all the rods out with the pistons. They do do have there caps BUT he didnt number each rod where they go. I am putting new pistons on them and its at machine shop. Does it really matter if not numbered? Thanks
I hate to ruin your day, but you will need a new crankshaft or have the journal giving you trouble ground round again. You may be able to match a new bearing to it, as is, but it wont last. The knocking means out of round.
@@toheebkunle9440 It depends on how hard it is knocking, it could be 5 minutes, it could be a week. But the hotter it gets the more out of round it becomes. Disaster is looming around the corner somewhere, that is for sure.
ANAND ARAVIND No problem they are just called connecting rod bearings. Now make sure you use plastigage to measure what size bearing you need. Std. is standard factory specs. .002 under and so on. Thank you
I’ve been searching for videos to see if it is ok to not have oil holes in the connecting rod/bearings. And then you said oil comes out of the crank shaft and oils the inside of the bearing. And it clicked in my head. Thank you. This video was super helpful
The tang is only for alignment not to keep it from spinning. That is done by the crush. The bearing when installed will stick out alitte on both ends. You must make sure they all stick out the same on both ends and both halves. When you tourqe down the caps it will crush the bearing against the journal.
that is right. Thank you.
It does both
@MyPageMikeCaldwell there are more type of bearings than ball bearings
If you check out vintage engine or obsolete engine parts you can often find .001, .002 undersized. Sometimes someone might have already done that and it's maybe a very good bottom end . Always polish the journals even if you reuse good bearings
If you Nick the Crankshaft with the rod bolt run a very small round file parallel with the rotation of the crank until
the nick is gone then polish it, you will have a very small indentation, it will fill up with oil when engine is running and be fine......
Great video. Recently my engine gave out and the mechanic said the needed parts where 2 connecting rods, gasket kit, crankshaft and oil pump.
That will require lots of machine work.
great video how ever that notch is just a locating tag to hold it in place when installing the bearings after that the torc on the bolts stops it from spinning hence having the correct torc when doing the conrod cap bolts
Go back to school. It's not a roller bearing in a 2 stroke . There is .002 thou clearance between the rod and the crank. And they do not touch. Grind them off and see them burn up. Put your money where your mouth is.
That tab doesnt stop bearing from spinning. Its the bearing crush resulting from torquing the bolts, pushing the bearings pressing against the bore of the connecting rods that stops it from spinning.
Yep , damn near all spun bearings are a result of it not being held in place firmly enough. If it were fixed in place and the journal makes contact , instead of knocking it loose it would "self-clearance" and probably not hit anymore, at the cost of a few psi of oil pressure instead of another motor.
That is correct; the tab just *locates* the shell ; there are PLENTY of engines (i´m in portugal,europe) with NO tabs in the bearing shells.
Yup why do ppl think that. That tiny nub can't stop shit
Exactly right..That is they a new bearing will stick up just a tad. On each half..These need to be aligned right on both halves. So that when you toque them down. Each half will push each other. As they form....
Is the pressure that stops rotation
Thanks brother for that education 🎉❤
Some metal is not indicate STD, but I do see some digit so how can I identify sure metal to be standard?
when I replace a bearing do i grease the front the touches the crankshaft? I'm assuming the back stays dry?
Collective Consciousness Put assembly lube on the faces that face away from the block. In other words where the crank sits and the outside of the thrust face.. yes the back stays dry.
+Josaljo Won It was my first time doing this so I'm learning as I go. Need to torque bolts and tighten in a certain sequence etc...... I only had a problem with one piston with both bearings totally disintegrating into my oil pan causing the rod to knock. I was low on oil and caught it quick. My crankshaft seems to be OK as far as I can tell to the touch. So I replaced the two bearings on the one piston should i grease the face of both of those bearings?
Touch is not good enough, use plastigage to check the clearances and a micrometer to measure the journal, if the journal is out of round it will start to hammer no matter how many new parts you put in it.
+Josaljo Won is there a video on how to check the crank and what tools I need. Like the micrometer or plastigauge?
+Josaljo Won I forgot to mention I'm doing the work through the oil pan and the crank shaft is not out of the motor. Can it be checked this way?
Check the id of the rod with no brg as some ford engines came of the production line with oversized rods and mains from new even though the crank was std. came across a few engines with os she’ll backs in my time reconditioning
Can bearing cause my engine not to turn?
It is possible
But unlikely
hello just picked up a nice 350, And the guy i got from took all the rods out with the pistons. They do do have there caps BUT he didnt number each rod where they go. I am putting new pistons on them and its at machine shop. Does it really matter if not numbered? Thanks
It matters very much but the machine shop should align bore everything and you should be good.
@@josaljo1 thanks!
What's that material made of?
The bearings are like an alloy, softer than the steel. Copper and Lead I believe you might want to check on that.
@@josaljo1 Bronze ( copper + Tin) and steel alloy (MS)
@@dp-01 you are right, i could not think of tin last night. Thank you.
sir if the engine has a knocking sound do i need to replace the con rod bearing with d same size? or i need oversize? thanks.
I hate to ruin your day, but you will need a new crankshaft or have the journal giving you trouble ground round again. You may be able to match a new bearing to it, as is, but it wont last. The knocking means out of round.
Sir what happen if the con rod cap i s fix wrong
The motor will start hammering untiil it comes apart. It will be destroyed.
OK Sir pls how long will it take before it destroy because I couple one recently have run it like 15 minutes
@@toheebkunle9440 It depends on how hard it is knocking, it could be 5 minutes, it could be a week. But the hotter it gets the more out of round it becomes. Disaster is looming around the corner somewhere, that is for sure.
I hate to break it to you but the tang don't stop the bearing from spinning
what's the name of this connecting rod bearing?
Sorry my friend I dont understand your question.
@@josaljo1 My friend I just want to know whether these bearings are called connecting rod bearing or does it have a specific name...
ANAND ARAVIND No problem they are just called connecting rod bearings. Now make sure you use plastigage to measure what size bearing you need. Std. is standard factory specs. .002 under and so on. Thank you
@@josaljo1 Thank you very much.
@@anandaravind6342 connecting rod bearings, or just rod bearings! And the bearings for the main caps are called...u guessed it main bearings!!!
ive put a over size bearing in a crank that was real wore fixed it
You don't hit the rod bearing surface. You use a wooden dowel on the back side of the piston...You never want to hit any part of the rod end....
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The tang does absolutely NOT stop a bearing from being spun !!!!!!!!!!! The correct crush does
God
that motor could have gone another 100 k no problem..