F4 Main bearings! Rattle on deacceleration
Administrator and MVN, March 2012/Oct 2013 ROTM
Joined: Sep 2011
Posts: 12,193
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From: socal 949/951
hey i saw couple of sites where it mentions 003 is superseded by J21.
here are the sites
https://www.motorcyclespareparts.eu/...px?pagesize=20
(91021mbwj21) Brg,needle 30x41x Honda - 91021MBW003 91021-MBW-003
here are the sites
https://www.motorcyclespareparts.eu/...px?pagesize=20
(91021mbwj21) Brg,needle 30x41x Honda - 91021MBW003 91021-MBW-003
Member
Joined: Jan 2013
Posts: 96
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From: Bristol, UK
Hey,
Have you decided it's the bearings?
When you pull the rocker cover have a look over the cam shafts and followers for signs of scoring. My motor made a distinctive rattle on decelaration and that was the cause. Replaced the cylinder head assembly with used parts and now the noise has gone!
Have you decided it's the bearings?
When you pull the rocker cover have a look over the cam shafts and followers for signs of scoring. My motor made a distinctive rattle on decelaration and that was the cause. Replaced the cylinder head assembly with used parts and now the noise has gone!
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Senior Member
Joined: Mar 2013
Posts: 121
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Yes so far sticking on the bearings! Replacing the head in India is totally out of question and haven't opened the head yet. Gathering the parts now and once everything is in hand will open up.
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