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Discussion Starter #1
ok, im gonna tear down my perfectly running 04 soon to do new crank bearings. Can someone put together a parts list for me? Im assuming rigfht side case gasket and right side bearing. Should i do the left too? I dont want to rebuild the whole bottom end, but i dont want to ruin my engine by not changing the bearing. Also, what is the difference in the "new" bearing as compared to the old one?
 

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Discussion Starter #2
ive got two years of racing on it and knock on wood, no problems. Is this just luck? Or did honda use two different bearings, one that was good adn one that failed?
 

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Replace the crankshaft balancer bearing while your in there... thats what went in mine.... mine as well be safe.


Ry
 

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This is what I am replacing. 2004

91003-HP1-671 1 BEARING (25X56X15) $ 25.44 $ 18.61
90004-GHB-680 3 BOLT, FLANGE (6X28) $ 6.48 $ 4.92
11394-HP1-670 1 GASKET, R. COVER $ 19.14 $ 12.54
91256-383-721 1 O-RING (17.8X2.4) $ 1.65 $ 1.26
91022-MT7-003 1 BEARING (30X35X26) $ 17.62 $ 13.37
15433-HP1-671 1 SEAL, RING $ 1.76 $ 1.34
11395-HP1-670 1 GASKET, L. COVER $ 9.77 $ 6.4
91203-HP1-671 1 OIL SEAL (12X22X5) $ 3.49 $ 2.65
11191-HP1-670 1 GASKET, CRANKCASE $ 14.91 $ 11.32
18601-MBW-003 1 VALVE, REED $ 11.47 $ 8.71
91001-HP1-671 1 BEARING (6306) $ 17.35 $ 13.17
91006-HA0-003 2 BEARING (9MM) $ 19.1 $ 14.5
91008-HP1-671 1 BEARING $ 43.96 $ 32.16
91022-KA4-740 1 BEARING (33X38X8) $ 11.95 $ 9.07
91201-HP1-671 1 OIL SEAL (33X47X7) $ 9.25 $ 7.02
91202-HP1-671 1 OIL SEAL (30X44X7) $ 9.25 $ 7.02
91203-KA4-771 1 OIL SEAL (14X22X5) $ 2.64 $ 2
91203-MEB-671 1 OIL SEAL (20X33X5) $ 3.2 $ 2.43
13000-HP1-670 1 CRANKSHAFT $ 316.73 $ 209.07
91002-HP1-671 1 BEARING (17X42X13) $ 7.84 $ 5.95
91004-MEB-671 1 BEARING (20X32X14) $ 6.49 $ 4.93
91003-KJ1-003 1 BEARING, RADIAL BALL $ 14.56 $ 11.05
91005-HP1-671 1 BEARING (17X40X12) $ 7.84 $ 5.95
91006-HP1-671 1 BEARING (24X56X22.1) $ 30.07 $ 22
91201-ML3-873 1 O-RING (23.75MM) $ 2.47 $ 1.88
91207-ML3-871 1 OIL SEAL (31X40X7) $ 7.13 $ 5.41
91004-KY4-900 1 BEARING (6905U) $ 15.35 $ 11.65
91204-KF0-003 1 OIL SEAL (20X28X5) $ 4.53 $ 3.44
19300-HP1-671 1 THERMOSTAT ASSY. $ 34 $ 24.87
15331-958-000 1 ROTOR, OIL PUMP $ 21.95 $ 16.05
15332-958-000 1 ROTOR, OIL PUMP $ 18.82 $ 14.28
 

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No you have to split them, and if I am going that far I am doing the list while I am there.
 

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Discussion Starter #7
why the new crank? Unless its already damaged?
 

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I just figure if i'm in it I am going all the way.
 

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Discussion Starter #9
do i need to replace the crank? Can i just replace the bearings and use my original crank?
 

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Discussion Starter #10
also, was there a service bulletin from honda for the dealers on what to replace in the bottom end on the 04 and 05 models?
 

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Discussion Starter #11
why wasnt there any problems with the crf dirtbikes, only the quads?
 

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i dunno but i dont know if there a special way to install some of the parts or it was just a manufacture flaw on the bearing and that is why they cahnged them and redesigned em. i wonder how many people had problems without touching there engines?





-lumi
 

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This is what I am replacing. 2004

91003-HP1-671 1 BEARING (25X56X15) $ 25.44 $ 18.61
90004-GHB-680 3 BOLT, FLANGE (6X28) $ 6.48 $ 4.92
11394-HP1-670 1 GASKET, R. COVER $ 19.14 $ 12.54
91256-383-721 1 O-RING (17.8X2.4) $ 1.65 $ 1.26
91022-MT7-003 1 BEARING (30X35X26) $ 17.62 $ 13.37
15433-HP1-671 1 SEAL, RING $ 1.76 $ 1.34
11395-HP1-670 1 GASKET, L. COVER $ 9.77 $ 6.4
91203-HP1-671 1 OIL SEAL (12X22X5) $ 3.49 $ 2.65
11191-HP1-670 1 GASKET, CRANKCASE $ 14.91 $ 11.32
18601-MBW-003 1 VALVE, REED $ 11.47 $ 8.71
91001-HP1-671 1 BEARING (6306) $ 17.35 $ 13.17
91006-HA0-003 2 BEARING (9MM) $ 19.1 $ 14.5
91008-HP1-671 1 BEARING $ 43.96 $ 32.16
91022-KA4-740 1 BEARING (33X38X8) $ 11.95 $ 9.07
91201-HP1-671 1 OIL SEAL (33X47X7) $ 9.25 $ 7.02
91202-HP1-671 1 OIL SEAL (30X44X7) $ 9.25 $ 7.02
91203-KA4-771 1 OIL SEAL (14X22X5) $ 2.64 $ 2
91203-MEB-671 1 OIL SEAL (20X33X5) $ 3.2 $ 2.43
13000-HP1-670 1 CRANKSHAFT $ 316.73 $ 209.07
91002-HP1-671 1 BEARING (17X42X13) $ 7.84 $ 5.95
91004-MEB-671 1 BEARING (20X32X14) $ 6.49 $ 4.93
91003-KJ1-003 1 BEARING, RADIAL BALL $ 14.56 $ 11.05
91005-HP1-671 1 BEARING (17X40X12) $ 7.84 $ 5.95
91006-HP1-671 1 BEARING (24X56X22.1) $ 30.07 $ 22
91201-ML3-873 1 O-RING (23.75MM) $ 2.47 $ 1.88
91207-ML3-871 1 OIL SEAL (31X40X7) $ 7.13 $ 5.41
91004-KY4-900 1 BEARING (6905U) $ 15.35 $ 11.65
91204-KF0-003 1 OIL SEAL (20X28X5) $ 4.53 $ 3.44
19300-HP1-671 1 THERMOSTAT ASSY. $ 34 $ 24.87
15331-958-000 1 ROTOR, OIL PUMP $ 21.95 $ 16.05
15332-958-000 1 ROTOR, OIL PUMP $ 18.82 $ 14.28
Why does everything have 2 prices?
 
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