To replace Crank or not? - Honda TRX Forums: Honda TRX 450R Forum
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post #1 of 9 (permalink) Old 07-04-2019, 11:17 AM Thread Starter
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To replace Crank or not?

Question of the day? I’m tearing down my 2005 trx450r to redo the top end (not sure if I’m doing 480 with 13:1 or stock with 13:1.). I don’t know any history on this bike at all I’ve had it for about 6 months but haven’t rode it hardly at all. Now the question I checked the crank it has no up and down play and the side to side play measures .015 and all the gaskets look pretty new. Would you run it or replace the crank?
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post #2 of 9 (permalink) Old 07-04-2019, 07:56 PM
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With no metal in the oil filter then no I wouldn't even consider replacing the crank
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post #3 of 9 (permalink) Old 07-05-2019, 08:56 AM
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Quote:
Originally Posted by Poorboy04 View Post
Question of the day? Iím tearing down my 2005 trx450r to redo the top end. Would you run it or replace the crank?
Are you the original owner of the bike?
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post #4 of 9 (permalink) Old 07-05-2019, 11:29 AM
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I wouldn’t replace the crank if your oil filter looks good as stated above. As far as the stock bore or 480, the build I am running now is an 05 480 13:1 on oem crank and it runs great. It made high 50’s on the dyno with other supporting mods.
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post #5 of 9 (permalink) Old 07-05-2019, 03:14 PM Thread Starter
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No I’m not and don’t know the history of the bike
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post #6 of 9 (permalink) Old 07-05-2019, 11:04 PM
Making HP ainít free. . .
 
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Well, you could look at the serial number on your engine, if it’s 8043347 or earlier then it would not have come from the factory with the updated crank. 8043348 and after did. If you have an earlier serial number and it has the collar on the crank then you know it’s been updated or replaced at some point. If it’s after that serial number then it would’ve come with the update and there’s really no way to know other than evidence of a rebuild like bolts that look like they’ve been loosened or certain accessories that aren’t put on like they were from the factory which would indicate the motor has been pulled. Ultimately it comes down to your peace of mind if you replace it, and obviously the cash to do it.
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post #7 of 9 (permalink) Old 07-06-2019, 09:15 AM
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That’s good info. Hoser. That would be worth looking at.
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post #8 of 9 (permalink) Old 07-09-2019, 09:33 PM Thread Starter
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That is very good information. Thank you very much.
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post #9 of 9 (permalink) Old 07-10-2019, 12:47 AM
Making HP ainít free. . .
 
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You're welcome, that's what this community is all about!
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