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Honda TRX Discussions for the Honda TRX, 90, 250, 300, 400, 450, 700

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Old 10-31-2012, 10:28 PM   #1 (permalink)
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400ex performance tricks

number 1---CLEAN EVERYTHING..I always install new lock nut on clutch basket,,,,install 450r timming chain,,it's bigger,fits perfect...
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Old 10-31-2012, 10:35 PM   #2 (permalink)
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decking the cylinder,,at tdc ..i mill the top of deck at 0..runs cooler and better performance.. i always heli-coil the three 6mm holes by the timming chain...
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Old 10-31-2012, 10:39 PM   #3 (permalink)
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head porting ,,i just blend the bowls under the valves,,don't change their shape,just clean them up..back cut the valves for more flow...
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Old 10-31-2012, 10:42 PM   #4 (permalink)
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plugs, look good
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Old 10-31-2012, 10:47 PM   #5 (permalink)
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swingarm bearings ,,take them apart at least twice a year and clean and grease them..i seen them so bad .they had to cut them and pound them out...
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Old 10-31-2012, 10:51 PM   #6 (permalink)
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clean and file the groves off clutch basket...clutch will work smoother....i know i need to shave her butt,it's alittle hairy
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Old 10-31-2012, 10:53 PM   #7 (permalink)
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install grease fittings,,
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Old 10-31-2012, 11:28 PM   #8 (permalink)
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did you make those grease fittings? or is there a part. thanks
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Old 11-01-2012, 05:12 PM   #9 (permalink)
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That is a good write up.What do you plain the cylinder with?Do you have your own mill or do you just send it to the machine shop?
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Old 11-01-2012, 06:07 PM   #10 (permalink)
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wow good write-up!
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