CBR 600F3 1995 - 1998 CBR 600F3 Forum

concerned about this engine marking

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Old 02-05-2011, 07:21 AM
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Question concerned about this engine marking

hi all,whilst doing a strip down on my carbs i noticed these etchings below the cylinder head,
my bike is a 98 f3 with 3500 miles on the clock when i bought it last year
all advise would be greatly appreciated
bike is in A1 condition
should i be concerned?
thanks,safe riding,
Ant.
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Old 02-05-2011, 09:18 AM
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kinda looks like junkyard marks
 
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Old 02-05-2011, 09:23 AM
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no pictures
 
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Old 02-06-2011, 02:29 AM
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those are the identification marks commonly found on parts that have come out of a salvage yard. normally, they use some form of short hand to identify parts once they are pulled from the bike so they dont mix them up. honestly, if the bike performs as advertised, i wouldnt be concerned about it. all it means is that at some point in the bikes life, it got a salvaged head. not the worst thing to ever happen. at least someone cared about this thing enough to replace a pretty expensive part.
 
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Old 02-06-2011, 06:52 AM
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thanks for the reply's, my thoughts as well-bugger,
any thoughts on how easy it is to clock (put a different millage on the clock)these bikes?
thanks,
Ant.
 
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Old 02-06-2011, 11:51 AM
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well as far as what you see on the odo, all it takes is a new set of gauges. if that is a different engine though, youll probably never figure out how many real miles are on it, and im not sure how vehicle titles work in the uk, but it is recorded on the title in the us.
 
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Old 02-12-2011, 05:25 AM
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just received this email back from a Honda dealer here in the U.K-

"Hi Anthony,

The carb markings are definitely made during manufacture, probably by the carb manufacturer.

As for the cylinder head, I would think that it is a batch marking done during the machining stage of the head.

I see no cause for concern in either case.

Best regards

Mark"

opinions? anyone else ever seen markings on their cylinder head?

cheers,

Ant.


 
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Old 02-12-2011, 12:05 PM
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no i have not. those were made either with a hand etcher or a scribe. honda stamps everything during their casting process with a machine, and any self respecting machine shop would never mark up someones part during a machining job. what you have was made by someone that owned the part at one point or another (IE, junkyard). dont always trust honda dealers, some of the dumbest techs and parts guys work for the dealers... you want an answer you can trust, find a high performance shop and ask them.
 
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Old 02-14-2011, 03:29 AM
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cheers jeason15,i will have a search around for a respectable tuning garage around my way and get their opinion,im with you,i just dont understand why a new head would have these markings scratched into them,surely a salvage part.
But another member on here has had a new engine casing shipped over to America from japan that did have very similar markings etched into it by hand though
 


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