Help with bearing size k24/eagle rods
09-15-2012, 12:28 PM
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Help with bearing size k24/eagle rods
This is a topic that many of us noobs have trouble with..
Ok so here's my issue.. This is my first time assembling a bottom end, so bear with me please..
It's a k24a4, stock crank, Eagle H-beam rods, Wiseco Pistons (everything was balanced). Now, i'm trying to order my rod bearings.. I would prefer to use OEM Honda bearings, but as it seems there isn't a thick enough bearing..
Rod measurements:
cyl1 -- 51.4mm/2.027"
cyl2 -- 51.4mm/2.027"
cyl3 -- 51.4mm/2.027"
cyl4 -- 51.4mm/2.026"
Crank Journal measurements:
cyl1 -- 47.9mm/1.889"
cyl2 -- 48.0mm/1.889"
cyl3 -- 48.0mm/1.891
cyl4 -- 47.9mm/1.888
Rod minus Journal = X, then I divided this by 2 (bearing come in 1/2's)
cyl1 -- 3.5mm/0.138" divided by two= 1.75mm/0.069"
cyl2 -- 3.4mm/0.138" divided by two= 1.7mm/0.069"
cyl3 -- 3.4mm/0.136" divided by two= 1.7mm/0.068"
cyl4 -- 3.5mm/0.138" divided by two= 1.75mm/0.069"
Here is Honda's bearing sizes...
Rod bearing-to-journal Oil Clearance (Honda service manual specs accord)
Standard (new) 0.032mm-0.066mm/0.0013"-0.0026"
Service Limit 0.077mm/0.0030"
Rod bearing-to-journal oil clearance (Eagle's spec that came with my rods)
0.0381mm-0.0889mm/ .0015"-0.0035"
Now heres where I run into my problem, if I ran a blue bearing 1.510mm/0.0594", its still not thick enough..
Clearance of journal & rod minus thickness of bearing
1.75mm minus 1.510mm = 0.24mm
0.069" minus 0.0594" = 0.0096"
Has anyone ran into this issue with these rods? I am doing something wrong?
Any and all help is appreciated
Ok so here's my issue.. This is my first time assembling a bottom end, so bear with me please..
It's a k24a4, stock crank, Eagle H-beam rods, Wiseco Pistons (everything was balanced). Now, i'm trying to order my rod bearings.. I would prefer to use OEM Honda bearings, but as it seems there isn't a thick enough bearing..
Rod measurements:
cyl1 -- 51.4mm/2.027"
cyl2 -- 51.4mm/2.027"
cyl3 -- 51.4mm/2.027"
cyl4 -- 51.4mm/2.026"
Crank Journal measurements:
cyl1 -- 47.9mm/1.889"
cyl2 -- 48.0mm/1.889"
cyl3 -- 48.0mm/1.891
cyl4 -- 47.9mm/1.888
Rod minus Journal = X, then I divided this by 2 (bearing come in 1/2's)
cyl1 -- 3.5mm/0.138" divided by two= 1.75mm/0.069"
cyl2 -- 3.4mm/0.138" divided by two= 1.7mm/0.069"
cyl3 -- 3.4mm/0.136" divided by two= 1.7mm/0.068"
cyl4 -- 3.5mm/0.138" divided by two= 1.75mm/0.069"
Here is Honda's bearing sizes...
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”
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”
Rod bearing-to-journal Oil Clearance (Honda service manual specs accord)
Standard (new) 0.032mm-0.066mm/0.0013"-0.0026"
Service Limit 0.077mm/0.0030"
Rod bearing-to-journal oil clearance (Eagle's spec that came with my rods)
0.0381mm-0.0889mm/ .0015"-0.0035"
Now heres where I run into my problem, if I ran a blue bearing 1.510mm/0.0594", its still not thick enough..
Clearance of journal & rod minus thickness of bearing
1.75mm minus 1.510mm = 0.24mm
0.069" minus 0.0594" = 0.0096"
Has anyone ran into this issue with these rods? I am doing something wrong?
Any and all help is appreciated
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