Hey guys. Quick question. So anyone have any exp with king bearings?? I got them instead of acl since they were backordered, from nates advice and i call my shop today and they HIGHLY suggested using acl as kings arent good. Any info? Thanks

 

Different engine builders have different preferences, ask 4-5 different shops you may get 4-5 different answers.

King's have been popular with the ford guys for a while, my local machine shop prefers Clevite, forum shops here prefer ACL it seems. As long as you go with the recomended bearing for your application you should be fine.

 

I usually use either clevites or acl but I know people who have used king in there dsm's with no issues.

 

I've never heard of anyone building evo motors using king. Only acl or clevite. Do you really want to risk a motor because you are being a little impatient.

 

Well on maps site. When u look at there shortblocks it says if there out of acl they will automatically use kings instead! I just dono if i trust them

 

King makes good bearings, acl and clevite are a lot more inconsistant.

 

Ya i hope they hold up. I got the xp's

 

What are your golas for the engine?

If 300-400 HP the kings will be fine.

Going to 600hp... You may want to wait for the ACL

 

Ha ill be 750+

 

Supposedly kings are all sti builders use. Kimg guarantees there clearance of. 0002 for there rod bearings. I might give em a shot

 

I've not used these bearings and cannot comment to that fact, but I would not advise using anything other than their tri-metal XP series. That appears to be their functional equivalent to ACL Race, Clevite 77, etc.

 

Never heard of them before. I don't build motors so what do I know. Good luck either way

 

I was reading somewhere on here that the king bearings use a softer alloy and have a higher chance for any particles to imbed into the bearing rather then ruin your crank journals but don't quote me on that.

 

A softer wear surface is a quality inherent to OE babbit or aluminum backed bi-metal type bearings, which are designed to spare the crank journals when subjected to improper service intervals and dirty oil.

Tri-metal bearings intended specifically for extreme duty applications featured hardened steel backing that resists flex when subjected to high loading, as well as harder wear surfaces that are less tolerant of dirt and foreign particles.

King's XP tri-metal series is representative of the latter. They appear to have a better reputation than ACL where sizing consistency is concerned, and that is important.

 

Don't know what you're smoking.

ACL was all over the place. Between .0027- .0032 on my rod clearances.

King XP series was right on the money at .0025 across the board without swapping halves or any of that malarky.

I like my King XP's over the ACL. Material wise they are fairly similar. Tolerance wise, the king XP's are fantastically better.

My mains were all perfect as well. I sent back the ACL mains.

-Alex