What Engine Bearings To Buy ? Nissan?acl?something Else ?

[robots]

Hi!

I'm looking to buy some bearings for my engines(rb20/rb25). Judging from other people engine specs people usually get ACL or King H/L bearings.

I went to ACL website and to my confusion they only have std/0.20/0.50 bearing sizes. How the hell should you buy them for a standard motor ?

Nissan has this grade system, you check all the marks, compare them to the manual and get the correct bearings. What about ACL then?

Does it mean they are inferior ? Or I don't understand something.

Looking forward to the replies.

Thanks!

[NYTSKY]

You could buy ACL,King or Nismo bearings. All are good.

In reference to the size,when you get your crank done they will be able to tell you what size bearing to get,most cases you just need the standard size but if your crank is in bad shape and they needed to remove some material they might suggest a different size bearing.

[robots]

Who they ?)))

Sorry.

Also why are nissan bearings graded and all other aftermarket ones are just 3 sizes?

Isn't it better to go with nissan ones, no?

[NYTSKY]

Who are who????

Nismo would be the best.

Both ACL and King are also good.

If it makes any difference im using ACL race series in my build.

[robots]

So you've checked your crank with the manual specs. If its all within normal - u get std bearings, right?

Edited May 7, 2008 by robots

[NYTSKY]

Consult with your engine builder.But if everything measures ok then yes.

[robots]

Damn me trying to be an engine builder (((

[NYTSKY]

You can try all you like.But when you blow your engine up from poor assembly or wrong clearances,think maybe you should get someone who knows what they are doing.

[Swiper the Fox]

ACL race series come in STD 1thou extra. If your crank is worn from STD your engine builder can linish the crank to suit these for correct clearance. If too worn or damaged for 1thou it will need to be ground 10thou and the 1st undersize bearings used.

ACL part numbers for 1thou under are

6B2960HX for big ends (conrod bearings)

7M2428HX for mains

easy!

Edited May 7, 2008 by DiRTgarage

[robots]

So if my crank is not worn and all within nissan specs, I just order std without these HX for some more oil clearance, right?

[NYTSKY]

ACL race series come in STD 1thou extra. If your crank is worn from STD your engine builder can linish the crank to suit these for correct clearance. If too worn or damaged for 1thou it will need to be ground 10thou and the 1st undersize bearings used.

ACL part numbers for 1thou under are

6B2960HX for big ends (conrod bearings)

7M2428HX for mains

easy!

Did you get my bearings Paul

[Swiper the Fox]

So if my crank is not worn and all within nissan specs, I just order std without these HX for some more oil clearance, right?

if your crank is not worn you use...

6B2960H for big ends

and

7M2428H for mains

bearings with an X at the end will give 1 thou LESS clearance than these.

Yes Dave got bearings mate.

Edited May 7, 2008 by DiRTgarage

[robots]

Got it !

Thanks!