http://www.honda-tech.com/zerothread?id=715490

 

ok now the same but for D series... thnaks tho

 

like it says use the formulas and use plasti gauge

 

I have acl's main and rod bearings and I was wondering what would I need to do to getthem to work? The crank and ros I have don't have any old bearings so I don't know what is what.

 

Only the stock oem honda replacements are pre-gapped

 

My friend and I just did a B18B with ACL's and everything spec'd out perfect, infact we broke the engine in last night doing a bunch of pulls to 7.5k and going through some heat cycles.

When specing out the bearings honda wanted the tightest clearance possible in their service limits, if your bearing is at the end of the service limit that is not a bad thing at all, Honda never designed for their engines to be seeing 7-8K every day, they designed them to run quiet, as long as youre getting proper oil pressure you will be fine as long as youre within spec, I always try to aim for the middle range clearance when doing bearings, and if your bearings are fine there should be no reason to upgrade them, I reused my bearings on my B16 and the engine runs great, it already did some 8k pulls and I havent heard any problems from it yet.

 

If you don't have a set of precision measurement devices (ie: calipers, micrometer, etc) You're going to have to install the bearings and plastigauge them before you apply any assembly lube. Then you will check these clearances with the appropriate limits(these can be found in a Helms manual). If they're out of spec you'll have to buy sized bearings (OEM). Hope this helps.

 

ideally the journals should be cleaned with acetone to remove any dirt/oil/grease/varnish before checking clearances.

 

Indeed. These are things you really don't want to skip, even if this is homemadeturbo..