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willysman69 12-30-2011 05:21 PM
440 rod bearings
 
I ordered new rod bearings for my 73 440 engine they look different from the ones I took off. There looks to be a oil path on the end of the rod as you look at it. So there is a small notch at the end of the bearings aparently some oil travels throught it to get some oil to the bearing. The new bearings dont have that notch at the end of the bearing. Do I carefully notch the end or what is recommended thanks

TVLynn 12-30-2011 06:06 PM
Pictures ??? If the bearing does not have the locating tang ?? I would send them back. The notch locates the bearing in the rod, without the tang it will spin in the journal. The rod is lubed thru the rod journal on the crank Not thru the rod. The rod may have a small hole to splash oil on the cyl wall if that is what you are referring to

Coronet 500 12-30-2011 07:43 PM
The tang TV is talking about is like a square dent on the end of the bearing where the two halves meet, do you have those? The pathway and notch your talking about is to spray a small amount of oil on the cylinder wall each rotation. I have received bearings like that and hand filed the notch in myself. Be sure they fit with mikes or plastigage before you start filing. If I remember correctly the cross-drilled oil hole from the main journal up to the rod journal lines up with that notch, oil pathway and sprays across to the opposite cylinder to cool and lubricate.

willysman69 12-31-2011 06:59 AM
Originally Posted by Coronet 500 (Post 79877)
The tang TV is talking about is like a square dent on the end of the bearing where the two halves meet, do you have those? The pathway and notch your talking about is to spray a small amount of oil on the cylinder wall each rotation. I have received bearings like that and hand filed the notch in myself. Be sure they fit with mikes or plastigage before you start filing. If I remember correctly the cross-drilled oil hole from the main journal up to the rod journal lines up with that notch, oil pathway and sprays across to the opposite cylinder to cool and lubricate.
Yes that is exactly my situation i have the square tang but not the notch on the other end. Is all 440's like that i wonder how many people put them in with out the notch and what happens cause the main oil comes from the crank. Thanks very much for the information its nice to have an expert who knows what there doing. have a good day.

bremereric 12-31-2011 09:06 AM
2 Attachment(s)
Hole or no hole but both halves have the locating tangs. I get the Clevite H series bearings.

Kokonuts 04-27-2012 07:37 PM
Hi, I'm new here. I'm not a mechanic but want to be one. I'm computer and pos service engineer by profession. I'm trying to repair or rebuild my 4G13 engine. Start reading service manuals and I want to know more details of car engine.

I'm curious on this thread about this Tang in crankshaft bearing. What is it purpose? Was it for oil trap for lubrication or just a marker? Do it need to be Tang hole in-line to each other to trap more oil? My crankshaft bearing tang was not align. Does it the reason that my oil was turn black after few months of usage due to lack of lubrication?

bremereric 04-27-2012 08:45 PM
Originally Posted by Kokonuts (Post 85389)
Hi, I'm new here. I'm not a mechanic but want to be one. I'm computer and pos service engineer by profession. I'm trying to repair or rebuild my 4G13 engine. Start reading service manuals and I want to know more details of car engine.

I'm curious on this thread about this Tang in crankshaft bearing. What is it purpose? Was it for oil trap for lubrication or just a marker? Do it need to be Tang hole in-line to each other to trap more oil? My crankshaft bearing tang was not align. Does it the reason that my oil was turn black after few months of usage due to lack of lubrication?
The tangs are to locate the bearing and keep it from spinning. There are teardrop slits in the connecting rods that squirt oil on the opposing connecting rods.


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