top end rattle - Club700XX - Honda TRX700XX Forum
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post #1 of 12 Old 07-12-2012, 11:01 AM Thread Starter
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top end rattle

the top end of my 700 makes a rattling sound at different gears and idles. anyone else have the same problem or know the cause/fix?

08 700xx black & silver
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post #2 of 12 Old 07-12-2012, 03:02 PM

 
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check the valve clearance.

#1 2008 Honda Trx700xx HMF Performance Exhaust, PCV, Stroked 710cc, 10.5:1 Wiseco Piston, Frt Elka Stage 4's, Fox Podium X rear's, EHS Lid, L8ton 11/16" sway bar, DG 6 Pack Rack, PRM Desert II Bumper & Front Skids.
#2 2008 Trx700xx AMR Reaper, Ehs Big 3, P/P head, Xcalibur Cam, Hard Welded Rockers, +1 In/Ex Valves, +3 Throttle body, 11:1 CP Piston, Elka Stage 3 Legacy Shocks, L8ton 11/16th Sway Bar, PRM Front Skids, Desert II Bumper & Rear Utility Rack.


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post #3 of 12 Old 07-15-2012, 09:39 PM
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I had that problem it was a simple fix, check the two bolts on the head pipe heat guard. If not that could be valves. You could try holding a long screw driver handle up to your ear and place the tip on the head near the valve inspection caps with the motor running it will amplify the sound.
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post #4 of 12 Old 07-16-2012, 06:09 PM
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Agreed on the valves. If it gets louder as you accelerate then most likely its the valves. If it is then they are easy to adjust. But as stated above it could be as simple as something loose. Good luck


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post #5 of 12 Old 07-16-2012, 10:18 PM Thread Starter
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i was thinking it was the valves but ive never messed with em before. what do i need to do to adjust them?

08 700xx black & silver
-barkers exhaust
-alba programmer
-uni filter
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post #6 of 12 Old 07-16-2012, 10:53 PM
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service Manuel,metric tools,metric feeler gauges and some patience anyone chime in if i left anything out

2011 Honda CBR 250r:full two brothers exhaust,red underglos
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post #7 of 12 Old 07-17-2012, 02:17 PM

 
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Quote:
Originally Posted by 700xxchris View Post
service Manuel,metric tools,metric feeler gauges and some patience anyone chime in if i left anything out
Plenty of cold ones, cause it's been hot...

#1 2008 Honda Trx700xx HMF Performance Exhaust, PCV, Stroked 710cc, 10.5:1 Wiseco Piston, Frt Elka Stage 4's, Fox Podium X rear's, EHS Lid, L8ton 11/16" sway bar, DG 6 Pack Rack, PRM Desert II Bumper & Front Skids.
#2 2008 Trx700xx AMR Reaper, Ehs Big 3, P/P head, Xcalibur Cam, Hard Welded Rockers, +1 In/Ex Valves, +3 Throttle body, 11:1 CP Piston, Elka Stage 3 Legacy Shocks, L8ton 11/16th Sway Bar, PRM Front Skids, Desert II Bumper & Rear Utility Rack.


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post #8 of 12 Old 07-17-2012, 07:28 PM
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thank m quick i knew i was forgetting the most important part

2011 Honda CBR 250r:full two brothers exhaust,red underglos
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post #9 of 12 Old 08-18-2012, 09:18 PM
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I have the same problem. It only rattles while accelerating so im guessing its the heat guard,. I put my foot on it while i drive to test it out and the noise goes away. I tightened it but it still seems to come back every once in a while. Should i just take the heat guard off? much help would be appreciated. Thanks
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post #10 of 12 Old 08-19-2012, 08:22 AM
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I had a similar issue when I bought my 700. At first the heat shield rattled but it kept coming back as I continued working on it and just running/revving letting it idle. When I looked into the parts that were missing on mine in the exhaust picture there is an exhaust gasket between the muffler and head pipe. I bought, went to replace it and the old one was paper thin, barely even noticeable it was so thin and the new one was a BIOTCH to get on but the rattle is all gone.

I had to pry the opening on the muffler open more in order for it to fit on and then clamped the muffler opening to put it closer back to the size it was prior to prying it open.

http://www.powersportsplus.com/parts...LER/parts.html

#11 - Part# 18392-MK4-000

Hope that helps at least I know it fixed my rattling noise.

Dan

2008 Honda Trx700xx
2007 Yamaha Wolverine 450 4x4
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