Carb Balancing - SV650.org

02-08-07, 11:37 AM

I've got a pair of gauges for balancing the carbs but they tend to bounce around a lot as each cylinder "sucks"

Last time I used the little valves to calm things down a bit. Is this right or is there another way to damp the pulses down a so things are easier to see?

Secondly does manometer tend to do it less?

Thaks

02-08-07, 12:11 PM

Yeah you need to use little restrictors or they will bounce around like crazy due to the pulses!

johnnyrod · 03-08-07, 11:11 AM

You must have the cheap crap gauges, the decent ones don't have (or need) the valves. Also lean running (e.g. new can but not dyno'd) makes the needles flutter a lot. You can get around this by taking off the airbox, taking the appendix off the left side, plugging all the holes, and putting the airbox back, so you can run with it and access the adjuster at the same time.

Viney · 03-08-07, 11:24 AM

To answer the qestion, yes, just adjust the little valves until they dont bounce.

At the end of the day its not the most important job in the world, and if the guages are cheap, then so what, they will do the job.

johnnyrod · 03-08-07, 01:54 PM

It's more of a caveat to those who haven't bought any yet, but it's not a job that should be forgotten about. It won't make it break down though, if that's what you mean.

Tris whereabouts in Lincs are you?

06-08-07, 11:45 AM

Gainsborough Mate

johnnyrod · 06-08-07, 11:57 AM

PM me if you have any trouble, want to go for a ride etc. Minitwins at Cadwell this weekend, see the other forum area, some of these guys will be there

08-08-07, 03:52 PM

Quote:

Originally Posted by johnnyrod

PM me if you have any trouble, want to go for a ride etc. Minitwins at Cadwell this weekend, see the other forum area, some of these guys will be there

Cheers Mate

Yeh I saw the mini twins were on. Trouble is I'm away on business 'till Friday and then fly out again on Sunday for another 4 days

The boss aint going to be too pleased if I stand her up on Saturday when we're scheduled to go "shopping"

I'll have to catch the next one

08-08-07, 03:56 PM

Bo££$%s just checked the minitwin web site and see that this weekend is the last one up here this season

B££ody work

johnnyrod · 09-08-07, 09:47 AM

****, indeed

02-08-07, 11:37 AM	#1
Tris Guest Posts: n/a	Carb Balancing I've got a pair of gauges for balancing the carbs but they tend to bounce around a lot as each cylinder "sucks" Last time I used the little valves to calm things down a bit. Is this right or is there another way to damp the pulses down a so things are easier to see? Secondly does manometer tend to do it less? Thaks

02-08-07, 12:11 PM	#2
markmoto Guest Posts: n/a	Re: Carb Balancing Yeah you need to use little restrictors or they will bounce around like crazy due to the pulses!

03-08-07, 11:11 AM	#3
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,128	Re: Carb Balancing You must have the cheap crap gauges, the decent ones don't have (or need) the valves. Also lean running (e.g. new can but not dyno'd) makes the needles flutter a lot. You can get around this by taking off the airbox, taking the appendix off the left side, plugging all the holes, and putting the airbox back, so you can run with it and access the adjuster at the same time.

03-08-07, 11:24 AM	#4
Viney Member Mega Poster Join Date: Jul 2003 Location: In the shadows to the left Posts: 7,700	Re: Carb Balancing To answer the qestion, yes, just adjust the little valves until they dont bounce. At the end of the day its not the most important job in the world, and if the guages are cheap, then so what, they will do the job.

03-08-07, 01:54 PM	#5
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,128	Re: Carb Balancing It's more of a caveat to those who haven't bought any yet, but it's not a job that should be forgotten about. It won't make it break down though, if that's what you mean. Tris whereabouts in Lincs are you?

06-08-07, 11:45 AM	#6
Tris Guest Posts: n/a	Re: Carb Balancing Gainsborough Mate

06-08-07, 11:57 AM	#7
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,128	Re: Carb Balancing PM me if you have any trouble, want to go for a ride etc. Minitwins at Cadwell this weekend, see the other forum area, some of these guys will be there

08-08-07, 03:56 PM	#9
Tris Guest Posts: n/a	Re: Carb Balancing Bo££$%s just checked the minitwin web site and see that this weekend is the last one up here this season B££ody work

09-08-07, 09:47 AM	#10
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,128	Re: Carb Balancing ****, indeed

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