06-02-2020, 04:00 PM | #1 |
Join Date: May 2020
Posts: 9
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Valve clearance
Getting ready to do a valve check on a tbr7 and a hawk 250! What clearances do you guys recommend for intake/exhaust? Thanks!
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06-02-2020, 06:02 PM | #2 |
Join Date: Aug 2019
Posts: 472
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.004 intake, .005 exhaust.
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06-02-2020, 06:08 PM | #3 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Too large of a spec for a cg motor. Most call for .002-.004 inches, or .05-.10mm
I personally run my valves at .06mm intake and .08mm (.0025in and .003in) exhaust. You can also simply run both valves at .06mm or .07mm and be just fine. I run my exhaust spec wider due to its increased state of tune.
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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06-02-2020, 06:20 PM | #4 |
Join Date: Aug 2019
Posts: 472
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I thought I was running on spec. Guess I'll redo them.
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06-02-2020, 07:23 PM | #5 |
Join Date: Dec 2016
Location: Argentina
Posts: 756
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Let me guess you saw Motocheez video?
Anyway is not the end of the world you are just slightly off. If you check Honda specs the max 0.10mm and you are somewhere near the 0.12mm So you are off if only 0.02mm in inches you are off by 0.0007 in |
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06-02-2020, 08:24 PM | #7 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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I always have been.
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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06-02-2020, 09:03 PM | #8 | |
Join Date: Aug 2019
Posts: 472
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Quote:
I saw Motocheez long before this site. I had already bought my Magician before I even knew about this site. |
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06-02-2020, 10:28 PM | #9 |
Join Date: Aug 2019
Location: Central Ohio
Posts: 297
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I know, Dan. I wasn't pointing anyone out specifically. I was just trying to reinforce that it is awesome to see more and more posts on the forum where users are noting what measurement system they are referring to.
Just trying to add a little encouragement when it comes to valve lash specs as it seems a little bit of a constant translation for guys that haven't been down that road before. |
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06-02-2020, 10:56 PM | #10 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Quote:
I just want to find the incorrect info and remove it from existence
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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06-03-2020, 11:38 AM | #12 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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You should notice a much quieter top end now. More like a sewing machine than a typewriter.
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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06-03-2020, 03:07 PM | #13 |
Join Date: Aug 2019
Posts: 472
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The top end got quieter, but the exhaust got noticeable louder.
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06-03-2020, 03:14 PM | #14 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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probably just hearing it better now that the valvetrain isn't clanking away
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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valves |
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