Engine bearings

[an orange crayon]

im building close to a 400 hp car and it will be daily driven, im just wondering on bearings i know people say acl race but race bearings in a daily driver? seems like that would not be a good idea for longetivity witch is important cause i want my car to last awhile so im trying to do it rite.

 

[BogusSVO]

King, Regular ACL or Clevite.

The race bearings are harder, and do not have the embedablity of the regular bearings.

 

[an orange crayon]

like some ACL Aluglide main and rod i was thinking that or clevite. thank you for answering so many of my questions.

 

[TSIfreek]

The ACL alumiglide would be your best bearing. Like said before I am not a fan of the race bearings eather as they are a harder bearing surface. Anything that sees the street for thousands of miles needs just standard off the mill factory style bearings. Your crankshaft will be much happier. IMO the race bearings are way over used for the wrong applications.

 

[an orange crayon]

sweet ill run the ACL Aluglide then thanks.

 

[BogusSVO]

Check your clearance!

 

[an orange crayon]

on the crank? i just got it magnafluxed and polished. so wont i just need std size?

 

[WES_393]

^ Well, yes. But you should still check the oil clearances.

 

[bewstin]

I run nothing other than King bearings, i live 5 minutes from the #1 Machine Shop in Connecticut and from what they've told me, they prefer King over any other brand. Plus they aren't too pricey

 

[BogusSVO]

Did you have the oil galley balls removed?

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If you have not, You should, so the crud will not end up in your rod bearings.

 

[RoryBarron]

Did you have the oil galley balls removed?

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If you have not, You should, so the crud will not end up in your rod bearings.

When you have them removed should you put anything in after or is it ok to leave it open?

 

[BogusSVO]

You can leave them out, but I doubt you make it out of the driveway. They are in there to keep the oil in the crank.

I tap the holes and install a common set screw for a plug.

 

[an orange crayon]

Do you have any pictures or a write up on that? im confused.

 

[BogusSVO]

Not at this time.

But if you go look at your crank, in the rod throws, you will see some press fit balls, they need to come out.

Take the crank to a welder, and have them tig out.
Then clean the crud behind the ball out.
Then tap for a set screw.
*6 bolt 5/16 x 18
*7 bolt 1/4 x 20
Clean the crank again.
Install set screws with green loc-tite

 

[AC Engineering]

I use cleavite or factory on the street. The clearances depend on the oil you use. I have always used 20w-50 brad pen or valvoline racing syn and run .015 to .018 for mains and .018 to .02 on rods. I have had very good luck with this so far. As for the ACL race I have used them many times on the street with no problems, after aftermarket crank\ wide radius fillet. As long as you have a properly tuned setup, have good maintenance practices, use the right weight oil with the right clearances, and allow your motor to warm up propererly you will be fine. Also as mentioned above, remove the bb and tap the cranks oil ports. Make sure when you install the plug during assembly that you peen the plug after installation. This will assure that it will not fall out or loosen up. Hope this helps