Honda Bearing color to thickness chart for everyone who loves using OEM bearings - Honda-Tech


Honda Bearing color to thickness chart for everyone who loves using OEM bearings

Reply
 
 
 
Thread Tools Search this Thread
Old 12-25-2003, 10:04 PM   #1
Trial User
Thread Starter
 
earl's Avatar
 
Join Date: Jun 2001
Location: Irvine, CA, usa
Posts: 8,120
Default Honda Bearing color to thickness chart for everyone who loves using OEM bearings

Here is a chart of Honda B series bearing thickness by color. To calculate actual bearing clearance, use the following formula:

BC = IDBT – ODC – (2 x BT)

BC = bearing clearance
IDBT = inside diameter of bearing tunnel (housing bore)
ODC = outside diameter of crank journal
BT = bearing thickness

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”

Rod bearing thickness by color
Blue 1.510-1.507 mm 0.0594”- 0.0593”
Black 1.507-1.504 mm 0.0593”- 0.0592”
Brown 1.504-1.501 mm 0.0592”- 0.0591”
Green 1.501-1.498 mm 0.0591”- 0.0590”
Yellow 1.498-1.495 mm 0.0590”- 0.0589”
Pink 1.495-1.492 mm 0.0589”- 0.0587”
Red 1.492-1.489 mm 0.0587”- 0.0586”

Although most people do not have inside micrometers, bearing micrometers or snap gauges, you can still use this chart when using plastigage to check bearing clearance. If you want to increase or decrease a bearing clearance, you can calculate how much of a color change is necessary by looking at the changes on the chart. Remember you can mix colors for even a more fine-tuning but it would not be wise to jump more than one color. In other words, do not mix a brown and yellow bearing together to equal a green clearance value. Just use the greens together. It is ok to mix a green with a yellow or a green with a brown. When doing your rebuild and replacing bearings with like colors, you still must check your results with plastigage to be sure. Don’t assume anything. Also remember, when swapping to aftermarket rods, throw the color codes away as they will not work anymore. You need to start from scratch to obtain your desired clearance. On the other hand, you really cannot measure accurately to the nearest .0001” without machinist quality tools, so don’t get carried away on that last one ten thousandth of an inch variance.
earl is offline   Reply With Quote
Old 03-18-2006, 02:32 PM   #2
Honda-Tech Member
iTrader: (3)
 
IN VTEC's Avatar
 
Join Date: Jan 2000
Location: Bloomington, IN, USA
Posts: 10,181
Default Re: Honda Bearing color to thickness chart for everyone who loves using OEM bearings (b20vtechatch)

Start with your bore ID.

Bore ID - Main Journal OD - Desired Clearance = Thickness of both bearing halves

Divide "Thickness of both bearing halves" by 2 = Thickness of just one bearing ----> Look it up on Earl's chart with individually listed bearing half thicknesses.

Example (numbers from your scenario):

(Main Bore ID #1) - (Main Journal OD #1) = 2.3240" - 2.1650" = .1590"

.1590" - (Desired Clearance=.0015") = .1590" - .0015" = .1575"

.1575" / 2 = .07875" (Look up this number on the chart to determine the bearing color you need to buy)

----->> Yellow 2.001-1.998 mm 0.0788”- 0.0787”

Keep in mind that, you should still measure the clearance again with the bearing installed using a dial bore gauge and micrometer. A simple calculation is not the final word on oil clearances.....just a starting point.

By the way, why are you only carrying some of the numbers out to the ten-thousandths place? Even if the ten-thouths place is 0, you still need to leave it in there as a place holder to state the level of precision in your measurements.
IN VTEC is offline   Reply With Quote
Old 03-19-2010, 11:22 AM   #3
Piv
Honda-Tech Member
 
Piv's Avatar
 
Join Date: Dec 2005
Posts: 42
Default Re: Honda Bearing color to thickness chart for everyone who loves using OEM bearings

Even if you go for the thicker one on all the journals, you will only go till 0.0020 clearances, when it's recommended having 0.0015 but as you cannot achieve that I'd try to buy thicker bearings and run it as it is

If you have the possibility, you can try another crank
Piv is offline   Reply With Quote
Old 05-27-2010, 11:41 PM   #4
Honda-Tech Member
 
Redwidow's Avatar
 
Join Date: Jun 2003
Location: Mesa, Az, USA
Posts: 591
Default Re: Honda Bearing color to thickness chart for everyone who loves using OEM bearings

Quote:
Originally Posted by DRAGLS View Post
Can someone mic the acl std and race bearings and the acl race bearing with .001" extra clearance. So we can have the specs on those bearings also.
I know this is an old post but didn't see if it was answered I just used my digital mic and it came out to be .079 for my 5M1959-STD Upper bearing. I don't have the HX but i hope I can find them because they should put me in my proper specs...Thanks OP

I just double check it you can find the info here
http://www.aclus.com/content/ACL07%281%29.pdf
Redwidow is offline   Reply With Quote
Old 06-08-2012, 09:38 AM   #5
B*a*n*n*e*d
 
Join Date: Nov 2009
Location: Pensacola, FL
Posts: 1,538
Default Re: Honda Bearing color to thickness chart for everyone who loves using OEM bearings

just to confirm for everyone, i just measured a bunch of new bearings i ordered for my street H series build and these numbers are dead on the same as earls chart.
q16racer is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Honda Bearing color to thickness chart for everyone who loves using OEM bearings earl Forced Induction 23 04-16-2012 09:48 AM
Another bearing clearances help thread.... hondamn1320 All Motor / Naturally Aspirated 35 03-25-2010 02:04 PM
The official H/F piston/rod/crank/block specs and CR thread 11seclude Forced Induction 31 10-30-2005 10:05 AM
Honda Bearing color to thickness chart for everyone who loves using OEM bearings PT#2 earl All Motor / Naturally Aspirated 0 12-25-2003 10:04 PM


Tags
acl, aftermarket, bearing, bearings, chart, clearance, codes, color, colors, honda, motor, oem, original, sizes, tech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 09:50 AM.


 
  • Ask a Question
    Get answers from community experts
What's your question?
Send