i just got done getting all the parts i needed for my engine rebuild and all the machine work is done. among these new parts are brand new honda oem bearings, which the honda dealership and i got by deciphering the numbers and letters from the block and crank. i also asked the machine shop the size of the crankshaft so that i could get the proper bearings. they told me that the crankshaft was standard and that he measured it with a micrometer so i figured i should go with the same factory colors. but upon installing and checking the clearances of these bearings with a plastigauge, i found that there is waaaay to much oil clearance, so i am assuming that the bearings are too big and that i need to go a size thicker.

i need some help though. why isnt my crankshaft the same size as it was? why dont these bearings fit? who is responsible for getting new bearings: me or the machine shop??

 

what color are they?
did the shop measure the crank and ''cap bore''

 

the colors are as follows:

1-brown
2-green
3-brown
4-yellow
5-yellow

i specifically asked the machine shop if it was standard size and he said yes. i figured he measured it with a micrometer and that he was correct. going along with what he said, i ordered the bearings and they dont seat right. sonofabitch.

 

yeah, he prolly didnt measure ****...
to find bearing clearance:

BC = bearing clearance
IDBT = inside diameter of bearing tunnel
ODC = outside diameter of crank journal
BT = bearing thickness

BC = IDBT – ODC – (2 x BT)

Main Bearing thickness by color
Blue 2.013-2.010 mm 0.0793”- 0.0791”
Black 2.010-2.007 mm 0.0791”- 0.0790”
Brown 2.007-2.004 mm 0.0790”- 0.0789”
Green 2.004-2.001 mm 0.0789”- 0.0788”
Yellow 2.001-1.998 mm 0.0788”- 0.0787”
Pink 1.998-1.995 mm 0.0787”- 0.0785”
Red 1.995-1.992 mm 0.0785”- 0.0783”