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Old 07-02-2013, 07:32 PM   #1
indr OP
Joined: Feb 2010
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Throttle Sync


indr screwed with this post 02-22-2015 at 09:18 PM
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Old 07-02-2013, 08:17 PM   #2
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From the info you gave, yes, or no, or both.

How about a year, make and model to give us a clue what you are looking to figure out?

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Old 07-02-2013, 08:38 PM   #3
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Location: Hiding off Hwy 6, B.C.
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Not with my IR thermometer. Hi spec isn't high enough to take temps of headers, will just decalibrate it and then would have to wait 1/2 hr until it recalibrates and is useable again.

Expensive them IR thermometers that will read really high temps such as headers temps.
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Old 07-02-2013, 10:09 PM   #4
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Location: Hiding off Hwy 6, B.C.
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You need some kind of vacuum balancer, there are a few out there. Not lending my old mercury filled for safety concerns.

Exhaust temps may work. Could be slow, takes a while for the pipes to show temperature changes. In any case and I looked it up recently 7-800F seems average but they can go much higher than that.I doubt you can fine tune anything that way but could be good enough all things considered.

I think you need expert help. I heard good from these guys:
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Old 07-03-2013, 04:38 AM   #5
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Harmonizer - see vendors.

Like hens teeth, but make this trivially easy.

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Old 07-03-2013, 04:55 AM   #6
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Side note.......IR temp readings from a shiny surface are not accurate.

The rest questions have been answered, some sort of vacuum gauges is the preferred method for carb sync.
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Old 07-03-2013, 05:35 AM   #7
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First I've ever heard of doing it that way

Just get a vacuum balancer. Morgan Carbtunes are the best, IMHO.

Don't bother trying to make your own -- all that stuff on the Ninja 250 forums about homemade systems is a waste of time and materials -- they never work well enough to get a decent result.
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Old 07-03-2013, 09:31 AM   #8
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Taking the header temp would tell you much more about the mixture screw setting than the throttle body sync.

The IR temp gauge can be useful as a troubleshooting tool, especially on bikes with lots of cylinders. If one header is substantially different in temp, then you can focus on what is going on with that carb. I can't imagine it being accurate enough or informative enough to adjust anything.

I don't think the IR gun will help you much.

You can search DIY carb sync for instruction to make you own carb sync tool with some clear tubing and a yardstick. There is a "deluxe" version where you connect the two tubes to each other with a small aquarium air valve at the top. A cross-over for lack of a better description. You start with the valve open then slowly close it to increase the sensitivity. That is a nice feature especially when the carbs are way out.

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Old 07-07-2013, 05:13 PM   #9
Joined: Aug 2011
Location: California, USA
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I made my own manometer with four ports to sync an inline-4 after my expensive carb-sync tool failed. Mine was cheap, easy to make, and is quite effective. Lots of pics out there to give you ideas.
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