Bearing tangs

[Truckedup]

There are several threads here about con rod bearing tangs from the past saying they are only for assembly location and serve no other puropse.
So is this still the thnking? I have a situation requiring tang removal, Thanks

[Dave Koehler]

Yes, for left to right location. Ok to remove if needed.

[Warp Speed]

Tangs are only good for location during assembly and don't stop the bearing from spinning, right up until they actually stop the bearing from spinning! Lol
If this is anything above a stock, non worked application, I would put tang grooves in instead of removing them from the bearings.
This will probably start a classic ST debate! Lol

[mag2555]

You lit the fuse!
If in any running motor the left to right limiting power of the tangs are being utilized, then you already have very big problems soon to befall you!

[PackardV8]

If cutting new bearing tang notches make you feel better, then do it.

Straight from the mouth of the Clevite engineer, "Tang notches are there so the hung-over guy can position them with his eyes closed. Bearings designed this century don't have tangs because they're assembled by robots."

[af2]

I have had the tangs removed when I spun a rod bearing... Does that say something?

[Dave Koehler]

It do. Lots of heat, loss of crush = spinner

[modok]

5 years ago I would have said tangs are stupid.
Still think so on rods, but I have changed my mind on main bearings.
It may be wise to have some locating feature on main bearings to assure the oiling holes cannot drift out of alignment.
Maybe tangs, or a stepped hollow dowel at the oil feed, or a stepped dowel next to the oil feed, something like that.

[PackardV8]

5 years ago I would have said tangs are stupid.
Still think so on rods, but I have changed my mind on main bearings.
It may be wise to have some locating feature on main bearings to assure the oiling holes cannot drift out of alignment.
Maybe tangs, or a stepped hollow dowel at the oil feed, or a stepped dowel next to the oil feed, something like that.

Again, according to the Clevite engineer, when crush is correct, there is no way the bearing will shift.

Surprised no one has mentioned aluminum connecting rods are a whole different deal.

jack vines

[modok]

So you check the crush of every bearing shell?
Good idea to trust your suppliers, but eventually you will trust no-one. Everybody makes mistakes sometimes, even the BIG companies.

[Walter R. Malik]

Some of today's newer production engines do not even have bearing tangs and rely on correct crush to keep them from spinning.
If the crush is not correct, the tang could help.

[Walter R. Malik]

5 years ago I would have said tangs are stupid.
Still think so on rods, but I have changed my mind on main bearings.
It may be wise to have some locating feature on main bearings to assure the oiling holes cannot drift out of alignment.
Maybe tangs, or a stepped hollow dowel at the oil feed, or a stepped dowel next to the oil feed, something like that.

Some LS engines I have done use single tangs on the main bearings however, the caps or the block have receiver notches on both sides on the main bore.

[PackardV8]

Some of today's newer production engines do not even have bearing tangs and rely on correct crush to keep them from spinning.
If the crush is not correct, the tang could help.

Walter, you and I agree on most things engine related, but again, the Clevite engineer said the tang has no real strength; if the crush is not correct, the tang is just chaff in the wind.

[rebelrouser]

YES, I have heard the same tangs are not needed, newer engines no longer have them. As of yet I have not built an engine without bearing tangs. And while I can read and try not to be an old fart stuck in the past, it would make me very nervous to assemble an engine without tangs to hold bearings in proper alignment. I guess it is kind of like cars that drive themselves. I know they work, but I just would not be comfortable in not hanging on to the wheel at 70mph, on a busy interstate.

[PackardV8]

Yer sorta like a 747 captain who doesn't trust and won't fly in a helicopter; he knows they mostly fly, but they don't fly right.