Throttle sync - Chicagoland Sportbikes
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post #1 of 8 (permalink) Old 01-18-2013, 04:39 AM Thread Starter
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Throttle sync

What's the tools needed for this on a SV650 k3?

Just a screw driver and a vac gauge? Or is there more to it?

How often is this needed to be done? I have 6k on the bike. I did the TPS adjustment this summer and it was way off. I'm looking to do this next.
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post #2 of 8 (permalink) Old 01-18-2013, 07:38 AM
 
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I have 50k miles on mine and it's never been done...

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post #3 of 8 (permalink) Old 01-18-2013, 08:18 AM Thread Starter
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Re: Throttle sync

I heard it could fix low mpg.

I'm getting low 40s compared to most others claiming never less then 50 and averaging 55-70

Seems like a cheap attempt to fix it. Plus it doesnt hurt it at all. I was shocked how much better the bike ran after the TPS adjustment.
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post #4 of 8 (permalink) Old 01-18-2013, 06:32 PM
 
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It might help if you idle a lot, but I doubt it will do much. Any mods to it? When I bought mine it had a full exhaust and PC and was getting low 40s. Then for kicks I threw on a downloaded map of the internet and mileage jumped to over 50 with smoother acceleration. I mainly commute with it now, in really bad conditions, with a hole in the exhaust (track day boo boo) and get mid to high 40s.

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It is far better to be thought of as a smartass than an dumbass. And as American Humorist Robert Benchley (1889-1945) noted, "no matter how well-intended, any reply to a dumbass question will inevitably appear smartassed". - Bob Hall (creator of the Miata)
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post #5 of 8 (permalink) Old 01-18-2013, 06:57 PM
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Quote:
Originally Posted by SopFu View Post
I have 50k miles on mine and it's never been done...
How about the valve clearance?

Mine was in spec at 14k, its at 35k now, I need to check it again before spring

I'm getting low to mid 40's on my 05, I'd say thats pretty normal for a city/highway mix

Last edited by pothiawala786; 01-18-2013 at 08:27 PM.
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post #6 of 8 (permalink) Old 01-18-2013, 07:38 PM

 
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can of worms for a beginner.

Gus
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You can pick any two
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I'd love to help but I don't chase parts.
Please contact other forum members and supporters for parts.
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post #7 of 8 (permalink) Old 01-18-2013, 08:48 PM
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Quote:
Originally Posted by resurrection View Post
can of worms for a beginner.
This +1

Throttle sync should be the last thing you do after cleaning the carbs, setting the valve lash, changing plugs, putting in a clean filter, and fresh gas.

The goal is to balance the throttle blades so that at idle, each cylinder is pulling the same amount of air, which gives a nice smooth stable idle. You do this by matching the vacuum, since you can't measure airflow directly. Yes, all you need is a vacuum gage and screw driver, but it take some experience...... Or a lot of trial and error to get it perfect on the first try.

Fuel mileage..... Unlikely unless they are WAY out. And if they are that far out..... You have another issue, or messed with the adjustment screw during cleaning,
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post #8 of 8 (permalink) Old 01-19-2013, 01:17 AM

 
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^ what he's saying is unless something else is wrong. your lock nutted sync screws are fine.

Gus
We offer three kinds of service @ Resurrection
GOOD - CHEAP - FAST
You can pick any two
GOOD service CHEAP won't be FAST
GOOD service FAST won't be CHEAP
FAST service CHEAP won't be GOOD
and cold beer.

I'd love to help but I don't chase parts.
Please contact other forum members and supporters for parts.
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