is that a finished end product of the rod bearing?

i mean the weadge. or is that a manufacture fail?
it not how in this pic

 

normal

 

but it fit not 100% in the widge

 

i built a few engines like this with different brand bearings. all was fine.
dont worry to much. the internet puts fear in your mind when you build engines.

 

just came across this. not normal, not right bearing, but will "work".

 

What are you talking about "the wedge"

You mean the bearing shell not being centered in the rod?

 

but it doesnt work. the engine had spun bearing after 4000km :-/ the clearence was really good. after bearing damaged the crank must go up to 0,75 oversize :-/ so i say. it doesent work. the crank was fine before install too.

 

hello

 

Hard to tell where the error lies. Still not exactly sure what you are referring to. That's just a locating tang. There is no major significance besides just locating the bearing. If there is going to be damage or the bearing spins it will happen regardless. There could be an error in the rod machining, I would doubt the bearing but I've never used clevites. I'd much rather have it centered in the big end..

Remember there are plenty of other things that can cause bearing damage. Inadequate lubrication, detonation etc.

 

What I've seen when this happens is a gsr bearing being installed into a b16,b18a/b etc setup. So it's narrower thus being off to one side. I've done it before long long ago when I didn't know better and was ok, never did it again...bout 9 years ago.

 

There is a HUGE significance to the locator tang. If there wasn't then there wouldn't be rod to crank side to side clearances to worry about or which side the tangs are on. If the locator tangs aren't properly positioned then there is a chance for the bearing to ride against the crankshaft radius and spin a bearing let alone maintaining position and not be allowed to spin if the engagement isn't correct.

OP - Do NOT run these bearings. Do you see how the edge of the connecting rod is chamfered? It is like this for a reason. Purchase the appropriate bearings for your rod. Depending on the crank I wouldn't be surprised if your connecting rod is hard to spin on the crankshaft using those bearings. Did you spin test each component?

The proper way to run those bearings is to have the connecting rod retanged on the other side. The tang should fit snugly in the rod and cap and need to be pressed with moderate force into position.

 

Yeah um no. Bearing crush is what keeps the keeps them in place. Call clevite and ask them what they think. It's for ease of install only, and many oem have gone to tang-less bearings to cut manufacturing cost. I'm well aware of Hondas practice of installing the tangs facing the exhaust side. Tell me the reason.

 

I didn't say crush didn't have anything to do with it; show me where I said the tang prevents the bearing from spinning. I said exactly what I said - locator tang. As the picture provided shows the bearing is too far to one side. Different cranks have different radius where the journal meets the counter weight. This can cause bearing failure.

As for which side the tang is on, show me where I said it must be on the exhaust side. I was referring to not stacking the tangs over each other - where crush comes into play. You are reading into it much too deep unfortunately. As long as the engine has a symmetrical rod it doesn't matter which side the tangs are on. I think most people just put them back that way due to the fact that Honda engineers are much smarter than most of the people working on their engines.

Not all engines have symmetrical rods and / or crankshafts with a radius on each side of the journal. In this event having the tangs could be an engine saver. With that being said most aftermarket rods are symmetrical anyways. Some would argue that radius loading comes into play but it IS a circle after all and this is why round big ends are of great importance.

Maybe I didn't say it simple enough to understand or spell it out enough. For that I am sorry. I think faster than I type without a doubt. Bearing tangs are to assist in assembly but when they are positioned wrong it can be an issue. Or in your example without a tang at all, one could not center the bearing all too easily during assembly.